REPORT THE HOLOTHURIOIDEA. 
VI. Tentacles and inner organs unknown, only fragments of animals having been 
examined. 
1. Anchors of two hinds, viz., large and small. 
a. Holes of the anchor-plates dentate. 
Synapta bankensis, Ludwig, 1875. 
Anchor-arms serrate. The smaller anchors and their plates are a fifth or a sixth of 
the larger. Anchor -plates roundish ovate, rather symmetrical, sparingly serrated 
in their almost even circumference, and with very numerous, small, dentate holes; 
no handle. IMiliary granules minute, rounded or biscuit-shaped. 
Habitat . — Banka (Ludwig). 
(i\Ius. Holm.) One incomplete specimen dredged at Banka, agreeing nearly in all 
respects with the description of Ludwig. I only find that the small anchor- 
plates are more uregular, and provided with comparatively larger and fewer holes 
than the larger plates, and that often some of the central holes are considerably 
larger than the rest. 
Synapta innominata, Ludwig, 1875. 
The larger anchors, present only in the five ambulacra, are more than twice as 
long as the smaller. Arms of the smaller anchors with one or two serrations, 
those of the larger with numerous. Anchor-plates irregularly rounded, with 
incomplete margin and rather large, slightly dentate, about twenty-five or more 
holes ; no handle. Miliary granules elongate cruciform. 
Habitat . — Philippine Islands (Ludwig). 
h. Holes of the anchor-plates smooth. 
Synagjta pseiido-digitata, temper, 1868. 
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The larger anchors are more than thrice as long as the smaller. Arms of the larger 
anchors serrate, while those of the smaller seem to be smooth. Anchor-plates 
roundish oval, with uneven margin and numerous smooth holes ; no handles, 
i IMiliary granules — small, elongate, cruciform bodies, 
t Habitat . — Bohol (Semper). 
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