82 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 24 



Previous Pacific records: 

 Panama. Isla Taboguilla: W. G. Van Name (Boone) ; (Schmitt). 



Guayabo Chiquito: Askoy (Haig). 

 Colombia. Bahia Limon, Golfo de Cupica: Askoy (Haig). 

 Ecuador. Bahia de Santa Elena: E. Festa (Nobili). 



Diagnosis: Carapace nearly smooth; no epibranchial spine; front 

 trilobate, the lateral lobes narrow and diverging; carpus one and a half 

 to two times as long as wide, anterior margin unarmed, margins 

 slightly converging distally ; outer margin of manus with a thin edge ; 

 merus of walking legs unarmed. 



Description: Carapace finely and evenly granular or nearly smooth, 

 regions not distinct. Front trilobate, the lateral lobes narrow, diverg- 

 ing, median lobe broad, triangular, with a distinct groove. Outer orbital 

 angle only slightly produced. No epibranchial spine. Carapace naked 

 or with traces of pubescence in small specimens. 



First movable segment of antenna with a projecting lamellar lobe ; 

 second and third nearly smooth; flagellum with short hairs. Outer 

 maxillipeds lightly rugose. 



Chelipeds finely granular, often appearing almost smooth, naked 

 or with slight traces of hairs. Merus with a strongly projecting, distally 

 directed lobe on anterior margin. Carpus one and a half to two times 

 as long as wide, margins very slightly converging distally; anterior 

 margin unarmed ; a low, obliquely rugose crest on posterior margin, 

 ending distally in a small sharp tooth. Manus with a thin outer margin. 

 Fingers long and slender, gape with a short pubescence. 



Walking legs finely granular; merus not inflated, not armed with 

 spines, all segments covered with long setae. 



Material examined: See Table 22. 



Measurements: Males, 2.5 to 6.3 mm; non-ovigerous females, 2.9 

 to 4.4 mm ; ovigerous females, 3.0 to 4.9 mm. Stimpson's type was 

 recorded as 0.20 inch in length, 0.19 inch in breadth (about 5.0 by 

 4.8 mm). 



Color: According to Stimpson (1859), the carapace is usually 

 spotted with red, and streaked down the middle with whitish; the 

 chelipeds are dark reddish and legs banded. The examined material 

 was bleached from preservation in alcohol, but some specimens showed 

 faint traces of reddish spots on the carapace. 



