Boone, Crustacea, Cruises of ''Eagle" and "Ara," 1921-28 33 



Color: The exposed parts of the hermit's body and appendages 

 are the color of old ivory, with a faint suggestion of safron pink 

 tinging the chelipeds and antennae. The setae of the chelipeds are 

 a pale golden yellow when freed from obscuring detritus. 



Technical description : Anterior region of carapace calcareous, 

 very convex, somewhat squarish, smooth centrally, but with minor 

 lateral areolations; faintly produced to a median point anteriorly, 

 which scarcely reaches the base of the ocular peduncles; submedian 

 points much fainter but with acute points ; postcervical region swollen, 

 submembraneous, with an anteriorly placed, subcrescentic row con- 

 sisting of three pairs of regularly decreasing laterally calcareous 

 plates. 



Ocular peduncle half as long as the precervical region of carapace, 

 dilated basally, cylindrical, slender distally; cornea terminal, placed 

 obliquely, heavily pigmented, convex; ophthalmic scale narrow, 

 acicular. 



External antennal peduncles stout, produced beyond the eye by the 

 entire length of the distal peduncular joint ; acicule extending to the 

 distal margin of the merus of the first ambulatory leg, long, slender, 

 slightly sigmoid, armed with spinules on the inner margin. The basal 

 peduncular joint is stout; the external lateral projection of the sec- 

 ond joint is short and rounded distally; the third peduncular joint is 

 broad and somewhat flattened; the flagellum is about two and one- 

 fourth times the length of the entire body. 



The inner antennae have the basal article about as long as the eye- 

 stalk; the second article subequal; the third article about as long as 

 the two first articles taken together; the flagellum biramose, the su- 

 perior branch is the slenderer, dorsoventrally flattened and consisting 

 of eight rings, fringed distally with a few setae ; the inferior branch is 

 cylindrical, dilated basally, decidedly tapering distally, one and one- 

 half times as long as the superior flagellum and heavily fringed along 

 the dorsal margin, with a dense brush of long, closely placed setae. 



The right cheliped is about as long as the body uncoiled and has 

 the basis and ischium short; the merus somewhat shorter than the 

 carpus, sigmoid, subtriangulate in a dorsal view, smooth on the inner 

 surface, granulose on the outer surface and densely pubescent on the 

 ventral surface ; the carpus is about as long as the hand without the 

 fingers and is dorsoventrally depressed, cylindrical, with the dorsal 

 surface granular, the ventral surface both granulose and pubescent; 

 the hand is similar to the carpus but more dilated ; the fixed finger is 



