^"isiwy"'] TKUCEEDlNCjiS OF THE NATION AL MUISEUM. 1)*J 



DiiiuMisioiis: Lcii^tli ol" 1 lie carapax, 0.75; j^reatest breadth, 0.51); dis- 

 tance ))etw('<Mi tips oi" postoihital teetli, 0.15; len^^tli of (list i)aii' of am- 

 bulatory feet, 0.80 iiicli. 



Specimens of this si)ecies wer(^ (lredj;td on a muddy bottom in 

 fathoms in tlu^. liarbor of Sidney or Port Jackson, ^Vustralia. 



Micippa hirtipes ]);m.i. 

 Micippa IniiipcSjlhimi; 11.8. I'ixjiloriiijj^ Expedition, Cnist. I, p. UO, jil. 1, 11^. I, 1852, 



The foUowiu^' description is drawn up from si)ecimens ])reserved in 

 spirits; it may be useful, as Daiui's t^pecimens Avere drie<l: The Ixxly 

 is moderately depressed ; carapax uiinutely and somewhat uneiiually 

 tuberculated above, without spines, except a snuill one at the branchial 

 region on each side and a marj^inal one in front of this; these are con- 

 tinuous with the series of teeth on the anterolateral margin. The pos- 

 terior margin is denticulated with granular tubercles somewhat larger 

 than those of the surface; the median two l)eing larger and dentiform. 

 The anterolateral margin curves upward a little and shows nine mi- 

 nute teeth, two of which in the depression between the liepatic and 

 bninchial regions are much largei' than the otluns. The superior mar- 

 gin of the orbit is two (issured. The eye i)e(luncles iire exposed through- 

 out their length :ind fully reach the tips of the teeth formed by the 

 exterual angle of the orbit. Eostrum broader than long; its ujjpcr sur- 

 face with two convex ridges; extremity broader than the base and 

 four-toothed, the middle teeth being short, triangular, and blunt, the 

 lateral ones sharj) and curxed upward. The movable ])art of the 

 antenna' is at the bas(^ of the rostrum, separated from the orbit only 

 by the narrow projecting terminal vi]g{' of the basal joint, which, seen 

 from above, forms a slender tooth. Beh)w the surface of this basal Joint 

 is smooth. 



The ui)per surfaces of the body is hairy, the ambulatory feet densely 

 so; hectognathopoda also hairy. First pair of and)ulat()ry feet long. 

 Dactyli much curved. The dimensions of a female spe<;imen are as fol- 

 lows: Length of the carapax, 0.50; greatest hreadtli, 0.4S im;h; i)ropor- 

 tion, 1: 1.2;}; length of tirst pair of ambulatory feet, 0.04 inch. 



Our specimens differ somewhat from Dana's figure in the greater 

 promimmce of the tooth of the basal Joint of the antenna', which projects 

 so as to appear conspicuously above. The species is, however, undoubt- 

 edly the same. It approaches M. philyra in (;haracter, but is more 

 hairy, the margins with smaller teetli, the teeth of the rostrum shorter 

 and the outer ones recurve*!, and the nu)vabl(' ])art of the antennai not 

 widely separated from the orbit. It has also some rosemblancie to M. 

 2>^^t^?j?6'.s' Ruppell, but luis not the sharp terminal rostral teeth of that 

 species. 



Our specimens were taken at the islands of Loo Clioo and Ousima, 

 Those of the Exploring Ijxi)editi<m are from Tongatabu. 



*A Hyiiimyiu of Micippa philyra (Herbst). — M. J, R. 



