G6 THE BKACHYURA. 



surface uneven, highest along the median line, hepatic region depressed, its 

 margin crenulate. A small spine at the postero-lateral angle, behind it a 

 spinule or granule; posterior margin bearing three lobes, the middle one 

 with four granules on its border, the lateral lobes smooth, naked, and 

 rounded, projecting downward between the bases of the last two legs. 



Front steeply inclined, its lower margin convex in front view, concave in 

 ventral view, and fringed with long hair ; at either end of this margin there 

 is a small sharp forward-pointing spine ; side margins spinulous or granulous. 



Basal joint of antenna large, smooth, with the exception of a crenulated 

 crest near and parallel to its union with the carapace ; this crest ends out- 

 wardly in a small tooth followed by a second tooth on the margin of the 

 orbit. Peduncle of antenna not reaching lower margin of front, fringed 

 with long hair, second joint expanded, third joint short, cylindrical. 



Chelipeds smooth, shining ; in the 9 the chelae taper distally. In the 

 legs of the first pair the merus is longer than the sum of the next three 

 joints, its outer surface is concave, and it bears a small spine at the lower 

 distal ajigle. Carpus short, broad, propodus elongate, dactylus half as long 

 and strongly curved. Size of the merus diminishing from the first to the 

 fourth leg, that of the fourth being about half as long and | as wide as that 

 of the first leg, and a little shorter than the sum of the next three joints. 



Abdomen of 9 thin, flat, 7-jointed. 



Dimensions: — 9, length, from lower edge of front, 9.2 mm.; greatest 

 width, 8 mm. ; width at postorbital angles, 5.5 mm. 



Type locality : — Makemo, Paumotus; reef; Oct. 21, 1899; 1 9 oviger- 

 ous (Cat. No. 32,856, U. S. N. M.). 



PARTHENOPIDAE. 



Parthenope (Parthenope) melana, sp. nov. 

 PI. 5, Fig. 6; PI. 6, Fig. 2. 



Carapace ovate-pentagonal, little broader than long. A continuous lon- 

 gitudinal elevation on the gastric and cardiac regions; an oblique elevation 

 on the branchial region. A deep hollow at the inner angle of the branchial 

 region; a furrow either side of the hepatic region. The more elevated por- 

 tions are covered with berried tubercles ; depressions for the most part 

 smooth. 



