82 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



Abdomen very long, narrowing rapidly at fourth segment; after 

 that, sides straight, little convergent; terminal segment subquad- 

 rate. 



Measurements. Male holotype, length of carapace 3, width of 

 same 3.6 mm. 



PINNOTHERES PUGETTENSIS Holmes. 



Plate 17, figs. 7 and 8 ; plate 18, fig. 1. 



Pinnotheres pugettcnsis HOLMES, Occas. Papers California Acad. Sci., 

 vol. 7, 1900, p. 86 (type-locality, Puget Sound, in branchial cavity of 

 Cynthia; type in Mus. Univ. California). 



Diagnosis. Female, carapace subpentagonal, widest anteriorly. 

 Chela widest immediately behind fingers. Legs increasing in length 

 from 1 to 4 ; dactylus of fourth pair much the longest. 



Description. Carapace soft and yielding, smooth, subpentagonal, 

 widest between antero-lateral angles. Front broadly rounded in 

 dorsal view, projecting little beyond general outline of carapace. 



Orbits nearly circular, partially visible 

 from above. 



Maxillipeds very oblique, strongly pu- 

 bescent; merus of large size, somewhat 

 pentagonal; last tw y o segments together 

 quadrate, distally oblique, true outer 

 margin (inner, when folded) straight; 

 dactylus small, attached distal to middle 



FIG. 39. PINNOTHERES PUOETTEN- ,. -, ,1 , i -, , 



SIS. ENDOCNATH OF ODTER MAX- f PFOpOdUS, tllC Cnd Of which it 



ILLII'ED OF FEMALE (40396), not 



Merus of chelipeds furnished with 



long hairs on upper margin; hands elongate, rounded, widest im- 

 mediately behind fingers; fingers and inner side of palm short- 

 pubescent; fingers subcylindrical, nearly straight, a little shorter 

 than palm, tips strongly hooked; dactyl with a low tooth near base 

 of prehensile margin; immovable finger produced at middle in a 

 low, broad lobe. 



Legs slender, increasing slightly in length from first to fourth 

 pair; propodi hairy above and below; dactyls narrow, compressed, 

 pubescent, convex above, abruptly contracted near tip into a short, 

 curved claw; in the first three legs the dactyls are shorter than 

 propodi and have the lower margin nearly straight; in the last leg 

 the dactylus is longer than propodus, much longer than preceding 

 dactyli, and has the lower margin concave and long-hairy. (After 

 Holmes chiefly.) 



Variations. In two smaller females which are, however, mature, 

 the carapace is just as wide as long, the manus is relatively shorter, 

 wider, and more swollen. 



