CRUSTACEA NORTH PACIFIC EXPLORING EXPEDITION 157 



It was dredged in sixteen fathoms, on shelly and gravelly mud. oft" 

 the coast of China, near Soon-Koo and Hongkong Islands ; also in 

 the North China Sea, in latitude 23° N., at the depth of twenty-five 

 fathoms. 



. Genus I PHIS Leach 



257. IPHIS SEPTEMSPINOSA ' (Herbst) Leach 



Cancer scptcius(^inosus Herbst, Naturg. d. Krabben und Krebse, i, pi. xx, 



fig. 112. 

 Leucosia septemspinosa Fabricius. 

 Iphis septemspinosa Leach, Milne Edwards, Hist. Nat. des Crust., n, 



139; Illust. Cuv. R. A., Crust., pi. xxv, fig. 4. Bell, Lin. Trans., 



XXI, 311. 



The color in life is pale brick-red above, white below. In one of 

 our specimens the width between the tips of the lateral spines is 2.15 

 inches. In the young these spines are proportionally shorter. 



Several specimens were taken in the trawl on a muddy bottom in 

 twenty fathoms, off the coast of China, near Hongkong. 



Genus IPHICULUS Adams and White 



The affinities of the crustaceans upon which this genus was 

 founded have been hitherto a matter of conjecture only, owing to 

 the imperfect manner in which it was characterized by its original 

 describers, and their doubtful reference of it to two very distinct 

 groups of Brachyura, the Parthenopidse and the Leucosidea. They 

 place it, indeed, among their descriptions of Leucosidea, but say in 

 their note that "it appears, among the Parthenopidse, to hold the 

 same place as Orcophorus does among the Leucosidas." While, 

 curiously enough, the generic name which they have applied to it is 

 a diminutive of that of its nearest congener Iphis, and thus indicates 

 its true position. 



Dana, having only the figures of Adams and White to judge 

 from — the characters of the antennse, maxillipeds, and other essen- 

 tial parts generally not being mentioned in their description — con- 

 sidered it allied to or identical with Polydcctnsr from the similar 

 character of the hand, in which the long, slender fingers are armed 

 with needle-like spines along their inner margins. This kind of 



^ Arcaiiia septemspinosa (Fabricius). 

 " U. S. Exploring Expedition, Crust., i. 



