180 



BULLETIN" 97, UNITED STATES NATIONAL MUSEUM. 



spines. Palms wide, margins convex and subacute, outer surface cov- 

 ered with sharp tubercles in longitudinal lines, which extend to tips 

 of fingers. Fingers finely dentate on prehensile edges and fitting 

 close together. 



Merus joints of legs narrow, margins subparallel; first leg reaches 

 end of propodus of second, merus with inferior margin denticulate, 

 superior margin with three spinules at proximal end, carpus and 

 propodus short and wide, dactylus stout, half as long as propodus; 

 second or longest leg a little longer than width of carapace, merus 

 with spinule at proximal end of upper margin, low^er margin some- 

 what roughened, carpus and propodus proportionally narrower than 

 in first leg ; third leg reaches to about middle of propodus of second, 

 the segments resemble those of second pair but are unarmed ; last leg 

 much reduced, not reaching end of merus of second leg, segments 

 proportionally rather wide, lower margin of ischium and merus 



Fig. 114. — Tjstrias scabripes, female holotype. a. Right chela, x 5 ; b, outer 

 MAXiLLiPEDS, X 5i ; c, dorsal aspect, X 2A. 



armed with spines and spinules, dactylus very small. Legs covered 

 with setae like those on carapace and fringed with hair; dactyli 

 curved. 



Abdomen of female fringed with long hair. 



Measurements. — Female holotype, length of carapace 6. width of 

 same 10, width of dorsal surface at middle 9.2 mm. 



Material examined.— 'So\\i\\Qvn part of Gulf of California : lat. 

 24° 12' 00'' K; long. 109° 55' 00" W.; 9^ fathoms: Sh.; Apr. 30, 

 1888; station 2826, steamer Albatross; 1 female ovig., holotype 

 (21595). 



Genus PINNOTHERELIA Milne Edwards and Lucas. 



PinnothereUa Milne Edwards and Lucas, iu d'Orbijiny's Yoy. rAinSr. 

 JMerid., vol. 6, pt. 1, 1843, p. 2-1; type, P. laevigata Milne Edwards and 

 Lucas. 



Carapace a little wider than long, antero-lateral margins rounded 

 and rather prominent. Front between the eyes wide, deflexed, me- 

 dian projection fused with epistome. Orbits oval; eyes of medium 

 size, somewhat elongate and tapering. Hiatus at inner angle of orbit 



