CRUSTACEA NORTH PACIFIC EXPLORING EXPEDITION I73 



broader than long, with a rather broad front. Teeth of antero- 

 lateral margin often bifurcated. Palate armed with a ridge on each 

 side. External maxillipeds as in Dru)nia. Feet as in Droiiiia, but 

 always more or less nodose. Posterior pair longer than the penult 

 pair. The copulatory sulci of the female sternum are remote from 

 each other, and terminate in the fourth segment (that of the second 

 pair of feet), each in a little tubercle. The abdomen is generally 

 armed with nodiform or spiniform projections. The male abdomen 

 is sufficiently broad, with free (unsoldered) segments; appendages 

 to the penult joint conspicuous; terminal joint usually broader than 

 long. 



The Droinia nodipcs of Lamarck and D. lateralis of Gray belong 

 to this genus, and perhaps also D. fallax and D. caput-mortuum. 

 These species have not yet been fully described, however, and in the 

 uncertainty we name as the type C. coronaia, described below. 



278. CRYPTODROMIA CORONATA Stimpson 



Plate XX, Fig. 2 



Cryptodroniia coronata Stimpsox, Proc. Acad. Nat. Sci. Phila., x, p. 239 

 " [77], 1858. 



Carapax broader than long, evenly convex ; surface minutely 

 roughened with grains and covered with a very short but strongly 

 adhering pubescence. Front very broad, 5-toothed, teeth large and 

 sharply projecting, subequal ; middle one somewhat smaller than the 

 others and placed at a lower level ; outer or lateral ones situated on 

 the superior margin of the orbit. The inferior orbital tooth is nearly 

 equal in size to those of the front. External hiatus or notch of orbit 

 not deep; tooth at external angle scarcely prominent. Antero-lateral 

 margin 5-toothed, but with two teeth only showing prominently, the 

 posterior tooth being as small as the angle of the orbit, and the sec- 

 ond tooth being at a much lower level than the others, and on the sub- 

 hepatic region. The two large teeth are slightly bilobed, the an- 

 terior lobe in each being a sharp tooth, but the posterior one broadly 

 rounded. Feet nodose ; tubercles not very numerous, but pn^iii- 

 nent ; interspaces reticulated. This reticulation is best seen on the 

 outer surface of the hand, w liich is entirely covered by it. Chelipeds 

 equal. Fingers ver\ strongly gaping, dentate at ti])S ; dactylus 

 slightly compressed, with a broad, deep sulcus on the front or outer 

 surface, and 2— 3-dentate on the inner edge toward base. The feet 

 of the last pair arc considerably longer than those of the penult 

 pair. Male abdonn-n rather broad: last joint much broader than 



