52 A EEVISION OF THE ASTACID^. 



spines acute. Carapace laterally compressed, punctate, fore border slightly 

 angulated behind the antenna? ; cervical groove sinuate ; no lateral spine ; 

 small branchiostegian spine ; areola of moderate width, punctate. Al)do- 

 men longer than the cephalothorax ; anterior segment of telson with two to 

 five spines on each side. Epistoma very short, broad, with an anterior spine. 

 AntenniB long, slender ; scale very broad, broadest in the middle, with very 

 small apical spine. Third maxillipeds hairy witliin. Chela sub-cylindrical, 

 long, slender, densely covei'ed with ciliate, squamous, small tubercles ; fingers 

 slender, Avith an internal and external longitudinal rib. Cai'pus c^lindroidal, 

 hardly furrowed above, squamoso-tuberculate like the hand, one or more of 

 the tubercles on the inner margin spiniform. Meros granulate, with spines 

 on the lower surface and at the distal end of superior l)order. Sternum 

 lanuginose. Third pair of legs with a long, slender hook on tlie third joint. 

 First pair of abdominal appendages short, thick, outer part ending in a blunt 

 tubercle, bearing a minute horny tooth directed forwards ; the internal part 

 projects far beyond the hind border of the external part, terminating in a 

 slender outwardly directed spine ; within, it forms a broad, flat, setose plate ; 

 the anterior margin of the appendage has a jirojecting rectangular shoulder 

 near the tip. 



The second form of the male has the hooks on the third legs short and 

 blunt; the external part of the first abdominal appendages has a terminal 

 blunt tubercle in place of the sharp horny ttioth of tlie first form. 



The female has shorter, broader, smoother hands ; annulus composed of a 

 large anterior bilobed tubercle and a smaller posterior tubercle. In a large 

 number of the females examined the annulus is hardly at all developed. 



Length, 56 mm. 



Hahitat. — Cuba. 



Erichson does not describe the male appendages, but Von Martens as- 

 serts that in Erichson's types in the Berlin Museum these organs have the 

 same structure as in those described by himself as C. Ciihemis from Gund- 

 lach's Cuban collections: "Die ersten Abdominalfiisse sind eigenthiimlicli 

 gebildet ; obwohl nur aus einem StUck bestehend, lassen sich doch gegen ihr 

 Ende zu zwei mit einander verwachsene Theile unterscheiden, ein ausserer, 

 der in eine stumpfe Spitze endigt und dessen Vorderrand nahe derselben 

 merklich anschwillt, und ein innerer, welcher nach hiuten den vorigen iiber- 

 ragt. nach innen eine ebene ovale Flache bildet, welche sich an die des 

 Anhangs der vordern Seite anlegt, und an seinem Ende zwei Lappen zeigt, 



