CRUSTACEA NORTH PACIFIC KXPLORIXG EXPEDITION 7 



grooved above, as is usual in the genus. The arrangement of the 

 orbits and antennje is as usual. There is a small spine at the ex- 

 terior base of the basal article of the external antennae ; another 

 larger one at the anterior angle of the buccal area, and a small one 

 between this latter and the large pterygostomian tooth. The ptery- 

 gostomian region is depressed, but not channeled. There are two 

 sharp tubercles on the sternum between the bases of the feet of the 

 second pair. The feet generally are long and slender ; those of the 

 second pair more than twice as long as the carapax ; chelopoda of 

 very small size, slightly villous, with a few scattered long hairs. 

 Finger and thumb denticulated within and contiguous for the ter- 

 minal half their length. Abdomen of male seven-articulate, narrow- 

 ing rather abruptly at the fourth segment ; there is a protuberance on 

 the second segment. 



The body is of a dirt\' \ellowish or hay color, mottled with black. 

 Feet annulated with orange. Dimensions (spines included) : Length 

 of carapax, 0.95 ; width, 1.02 ; proportion^ i : 1.07 ; length of a foot of 

 the second pair, 2.2 inches. 



It resembles D. uuiricata Edw., but has no visible spines on the 

 branchial regions, and the feet of the second pair are more than 

 twice as long as the body. The two lateral spines are much longer 

 than in D. rissonii. 



It was found in considerable numbers in the vicinity of Hong- 

 kong, China, occurring in 20 fathoms, gravell}' mud. outside of the 

 passages, anrl in 6 fathoms, mud, in some of the inner bays. 



3. DOCLEA CANALIFERA Stimpson 



Pl.\te T. Fig. 4 



Doclca caiialifcra Stimpsox, Proc. Acad. Nat. Sci. Pliiln., ix. p. 217 

 [23L 1857. 



This si)ecies is remarkable f(»r the depressed jiterygoslnmian chan- 

 nels just without the niaxillipeds. The whole surface, with the ex- 

 ception of the tips of the tarsi and the fingers, is covered with a 

 dense villous coat concealing all but a few of the more prominent 

 spines. Thr inlc-rregional groove and the s])ines and tubercles (if 

 the carajiax are in number and position nearly the same as in D. 

 gracilif'cs. except thai there is an intermediate tubercle between the 

 genital and cardiac s])ines. 'J'iie tenninal posterior spine is very 

 slender, somewhat curving upward, and in length a little more than 

 one-tenth that of the carajiax. The posterior of the antero-lateral 

 spines or teeth is larger than the others, slender, and in length about 



