180 



ed hairs, and is indeed very hirsute on the chelipeds and legs 

 in large specimens ; the hairs are, however, very scanty on 

 the carapace, and when rubbed off leave the surface polished 

 and marked with minute pits. 



The carapace is pentagonal in outline and very convex ; 

 there is a slight median groove extending from the front a 

 little back, and another wider and oblique proceeding from 

 the interval between the external angle of the orbit and the 

 first antero-lateral tooth. In some specimens a longitudinal 

 indentation exists on each side of the cardiac region, but the 

 cervical groove is very indistinctly marked. 



There is a tooth about the middle of the upper orbital 

 border and another close to the external angle, the angle itself 

 is occupied by a V-shaped notch. 



Two teeth are on the external angle of the buccal frame, 

 the anterior one of which is covered with granules. 



The epistome is sunken. 



The basal joints of the antennae lie slightly obliquely to- 

 wards the middle line. 



The internal margins of the ischium and merus of the 

 exterior maxillipeds bear a row of granules or spinules. 



A rather common species. S.A. coast. 



Genus, Dromia, Fabr. 



Sub-genus, Cryptodromia^ Stimpson. 



Cryptodromia depressa, n. sp. PI. xxv., iigs. 1, la, 16. 



The body has a harsh, short, brown tomentum, which is 

 spare or absent on the surface of the carapace and exposed 

 parts. 



The carapace is slightly broader than long, subpenta- 

 gonal in outline, a little uneven behind, with the cervical 

 groove well marked, smooth, except for a few small tubercles 

 near the antero-lateral borders and orbits. The front is com- 

 posed of two prominent obliquely compressed processes with 

 a median one, which is small, depressed, and obtuse, not visible 

 from above ; there is a supra-orbital tooth and another at 

 the external angle of the orbit. The antero-lateral margins 

 are arched and somewhat cristate — being a little excavate 

 underneath — nearly in the same line with the orbital and 

 frontal teeth when viewed horizontally ; they are marked by 

 one large compressed tooth, followed by four or five of vary- 

 ing size, somewhat irregularly placed, one of which is on 

 the posterior side of the cervical notch. The postero -lateral 

 margins scarcely converge, there is a slight insinuation behind 

 the cervical notch. The posterior margin is broad and mark- 

 ed by a sinuate ridge. 



