diff --git a/spacy/spans.pxd b/spacy/spans.pxd
index feafbed8b..94b0cde98 100644
--- a/spacy/spans.pxd
+++ b/spacy/spans.pxd
@@ -5,13 +5,6 @@ from .structs cimport Morphology, TokenC, LexemeC
 from .vocab cimport Vocab
 from .strings cimport StringStore
 
-
-cdef class Spans:
-    cdef Vocab vocab
-    cdef Tokens tokens
-    cdef readonly list spans
-    cpdef long[:,:] to_array(self, object py_attr_ids)
-
     
 cdef class Span:
     cdef readonly Tokens _seq
diff --git a/spacy/spans.pyx b/spacy/spans.pyx
index 9481423d2..76f281b7c 100644
--- a/spacy/spans.pyx
+++ b/spacy/spans.pyx
@@ -2,92 +2,6 @@ from __future__ import unicode_literals
 from collections import defaultdict
 
 
-cdef class Spans:
-    def __init__(self, Tokens tokens, merge_ents=True, mwe_re=None):
-        self.tokens = tokens
-        # Initialize spans as one per token
-        self.spans = [Span(self.tokens, i, i+1) for i in range(len(tokens))]
-        self.vocab = tokens.vocab
-        if mwe_re is not None:
-            token_starts = {t.idx: t.i for t in self.tokens}
-            token_ends = {t.idx + len(t): t.i+1 for t in self.tokens}
-            tokens_str = unicode(self.tokens)
-            for label, regex in mwe_re:
-                for match in regex.finditer(tokens_str):
-                    start = token_starts.get(match.start())
-                    end = token_ends.get(match.end())
-                    self.merge(start, end, label=label)
-        if merge_ents:
-            # Merge named entities and units
-            for ent in self.tokens.ents:
-                self.merge(ent.start, ent.end, label=ent.label)
-        
-    def merge(self, int start, int end, object label=0):
-        if type(label) == unicode:
-            label = self.vocab.strings[label]
-        new_spans = [s for s in self.spans if s.end <= start]
-        new_span = Span(self.tokens, start, end, label=label)
-        new_spans.append(new_span)
-        new_spans.extend(s for s in self.spans if s.start >= end)
-        self.spans = new_spans
-        _assign_indices(self.spans)
-        _assign_heads(self.spans)
-        return new_span
-
-    def __getitem__(self, int i):
-        return self.spans[i]
-
-    def __iter__(self):
-        yield from self.spans
-
-    def __len__(self):
-        return len(self.spans)
-
-    def __unicode__(self):
-        pass
-
-    def count_by(self, attr_id_t attr_id, exclude=None):
-        return self.tokens.count_by(attr_id, exclude=exclude)
-
-    property sents:
-        def __get__(self):
-            yield from self.tokens.sents
-
-    property ents:
-        def __get__(self):
-            yield from self.tokens.ents
-
-    cpdef long[:,:] to_array(self, object py_attr_ids):
-        return self.tokens.to_array(py_attr_ids)
-
-def _assign_indices(spans):
-    for i, span in enumerate(spans):
-        span.i = i
-
-def _assign_heads(spans):
-    spans_by_token = {}
-    for span in spans:
-        for i in range(span.start, span.end):
-            spans_by_token[i] = span
-    for span in spans:
-        heads = defaultdict(int)
-        for token in span:
-            head_span = spans_by_token[token.head.i]
-            if head_span is not span:
-                heads[head_span.i] += 1
-        if heads:
-            span.head = spans[max(heads.items(), key=lambda i: i[1])[0]]
-        else:
-            span.head = span
-        span.lefts = []
-        span.rights = []
-    for span in spans:
-        if span < span.head:
-            span.head.lefts.append(span)
-        elif span.head.i != span.i:
-            span.head.rights.append(span)
-
-
 cdef class Span:
     """A slice from a Tokens object."""
     def __cinit__(self, Tokens tokens, int start, int end, int label=0):