18 Bidletin Vanderbilt Marine Museum, Vol. VI 



Technical description : Species small. Carapace unusually 

 elongate, with the precervical portion shield-shaped, hard, with 

 with the frontal margin truncate, produced to a slight rostral 

 point and a pair of subequal, submedian points, one each above 

 the inner angle of the antennal base, beyond which point the outer 

 portion of the frontal margin of the carapace recedes obliquely. 

 The postcervical region is elongate, wider posteriorly, encased in 

 a tough, leathery membrane which is marked by definite longi- 

 tudinal wrinkles and beset with small clusters of long, golden 

 setae. The abdominal terga are well defined. The pretelsonic seg- 

 ment is squarish, calcified. The telson is but very little asym- 

 metrical, the left side being the larger; both lateral and distal 

 telsonic margins are each medially incised and very little rounded. 

 The uropoda are almost equal, both rami with a scabrous external 

 surface and the margins setose. 



The eyestalks, including the cornea, are equal in length to 

 the antennular peduncle, or about one millimeter longer than the 

 antennal peduncle ; or about as long as the frontal margin of the 

 carapace, slender, curved, with numerous long, golden, solitary 

 setae on the upper surface ; the cornea are terminal, hemispheri- 

 cal, appearing to possess slightly wider diameter than the related 

 stalk. The ophthalmic scales are side by side, nearly touching 

 proximally, slightly separated distally; as wide proximally as 

 long, with the outer lateral border excavate medially, the distal 

 portion a blunted triangle with a small spinule at the apex ; mar- 

 gins setose. 



The antennal acicule is nearly half as long as the eyestalk, 

 slender, acuminate, spinose and quite setose, nearly covering the 

 second peduncular article and overlapping the base of the third 

 article ; the second peduncular article has a small spinule at the 

 distal dorsal end; the third article extends almost to the distal 

 margin of the stalk ; the flagellum is thickish and extends to mid- 

 way the dactyl of the first ambulatory ]eg. 



The chelipeds are subequal, the merus laterally compressed, 

 with the upper margin setose, ornamented with a series of white 

 spots (preserved specimen), a few of these spots are elevated 

 and margined anteriorly by transverse rows of setae ; the inner, 

 lower meral margin is serrated; the carpus is similarly com- 

 pressed, but more robust, with many more distal spines ; the pro- 

 podus is short, definitely deflected, no longer than the merus ; the 



