6 SMITHSONIAN MISCELLANEOUS COLLECTIONS 



the carapax are rather tubercles than spines. In color the body is 

 light reddish above, mottled with white ; below white ; feet whitish, 

 annulated with red. The figure given by Milne Edwards in the 

 "Regne Animal" is less characteristic of our specimens than that of 

 Guerin. 



Dredged in the harbor of Hongkong, China, on a muddy bottom, 

 at the depth of 6 fathoms. 



Genus DOCLEA Leach 



2. DOCLEA GRACILIPES Stimpson 



Plate I, Fig. i 

 Doclea gracilipes Stimpson, Proc. Acad. Nat. Sci. Phila., ix, p. 2i6 [2t,], 

 1857. 



The species of the genus Doclea have great resemblance to each 

 other in the shape and convexity of the carapax and in general 

 appearance. The distinctions rest chiefly on the length of the feet 

 and the proportional size of the lateral and posterior spines. 



In D. gracilipes the body is covered with a short but dense villous 

 coat, while the feet are less villous than is usual. The carapax, 

 when this coating is removed, presents a deep suture or groove sepa- 

 rating the stomachal, genital, and cardiac regions from the hepatic 

 and branchial portions, and passing around behind the cardiac, 

 separating this from the intestinal region. This groove is very 

 deep where it passes the stomachal and genital regions. The me- 

 dian dorsal line is armed with six sharp tubercles, increasing in size 

 posteriorly. The anterior three on the stomachal region are very 

 small ; one at the summit of the genital is larger ; that on the cardiac 

 becomes spiniform ; and the posterior one, on the intestinal region, 

 is still larger, though stout, blunt, and only one-tenth as long as the 

 carapax. Of the four teeth usually described to be on the antero- 

 lateral margin of the carapax, the anterior one belongs to the margin 

 of the pterygostomian region, being at a lower level than the rest; 

 in our species it is somewhat larger than the two following or inter- 

 mediate ones ; the posterior one, forming the extreme lateral spine, 

 is very long (equaling in length more than one-sixth the width of 

 the carapax), sharp, and curved forward. Besides the spines and 

 teeth already mentioned, there are seven or eight slight tubercles on 

 each side at the stomachal and branchial regions, only to be seen 

 after the removal of the villous coat. The postero-lateral slopes are 

 entirely smooth. The rostrum is but little longer than broad, slit 

 for half its length, the horns being sharp. It is longitudinally 



