RATHBUN— MARINE BRACHYURA 



195 



The largest of these specimens (Sta. E 1) measures, C. 1. 6 - 8 mm., C. b. 7 - 2 mm. 



In most respects they agree with Hilgendorf's figures ; the distance between the 

 supraorbital and postorbital angles is greater than is represented by him, being nearly as 

 oreat as the distance from the supraorbital angle to the lateral tooth of the front. The 

 tooth behind the branchial groove is not developed. The "Sealark" specimens are all 

 smaller than the type. The carapace is so convex as to be hemispherical. 



4. Cryptodromia ornata, sp. nov. (Plate 15, fig. 1). 



Saya de Malha, 125 fms., Sta. C 5 ; 1 $ type. Seychelles, 34 fins., Sta. F 7 ; 1 ?. 



$, C. 1. 2T6 mm., C. b. 26'8 mm., antennal peduncle about 12 mm. 



Carapace and appendages covered with a very short vesicular tomentum which does 

 not conceal the coarse, crisp granulation. A few longer, fine hairs. Regions plainly 

 marked ; protogastric regions convex ; 2 convex bosses on the branchial region. Front 

 and upper orbit with a laminar margin ; front tridentate, teeth thin, lateral teeth the 

 larger. A small inconspicuous preorbital tooth. Outer angle of the orbit non-dentiform. 

 Lateral margin winged, continued anteriorly downward to the level of the front margin 

 of the buccal cavity, then upward to the lower tooth of the orbit ; it is cut into 3 large 

 denticulate teeth in front of the cervical suture, and 3 or 4 smaller teeth behind that 

 suture. A tooth at the buccal angle. Efferent ridge strong ; epistome with a deep 

 triangular cut on either side of the ridge. 



Chelipeds equal, rough with granulated tubercles, tomentose inside ; palm very thick, 

 especially in the upper half, and twice as long as fingers, measured in the middle line, 

 prehensile teeth fitting close together ; only the extremities of the fingers are smooth and 

 naked, white and polished. 



First and second legs rough like the chelipeds ; third and fourth pairs subequal in 

 length and chelate, but the third is broader and rougher and in its general appearance 

 resembles the preceding legs. 



Sternal grooves of female far apart, ending opposite the first ambulatory legs. 



This species resembles Petalomera except in having non-cristate legs. Of the species 

 of Cryptodromia, it approaches C. gilesii Alcock", but it is readily distinguished by the 

 alate lateral border extending nearly its full length, and the chelate subdorsal legs. 



5. Homalod romia coppingeri Miers. 



Lasiodromia coppingeri Alcock, Cat. Indian Dec. Crust., pt. I, fasc. 1, 1901, p. 57, 

 pi. Ill, figs. 15, 15 a. 



Amirante, 29 fms., Sta. E 2 ; 1 ? : 25—80 fms., Sta. Ell; 1 $, soft shell : 30 fms., 

 Sta. E 21 ; 2 $. Seychelles, 34 fms., Sta. F 8 ; I ?. 



?, Sta. F 8, C. 1. 9-5 mm., C. b. 9'2 mm. 



Dynomenidae. 

 6. Dynomene hispida Desmarest. 



Dynomene hispida de Man, Archiv. fur Naturg., liii. pt. 1, 1888, p. 408. 

 Salomon ; 1 ?. Coetivy ; 1 $. 



* Catal. Indian Dec. Crust., pt. i, fasc. 1, 1901, p. 54, pi. 3, fig. 13. 



