250 PERCY SLADEN TRUST EXPEDITION 



Of the 8 males 5 are like Dana's pi. 4, fig. 7 a ; 2 from Amirante and one from 

 station F 2 are like pi. 5, fig. 3. Ten of the 12 females are like pi. 4, fig. 7 c; one female 

 from Amirante and one from Saya de Malha have a large anterior lateral branchial lobe 

 and a short rostrum. 



215. Scyramathia pulchra (Miers). 

 Scyramathia ipulchra Alcock (l), p. 202. 



Scyramathia livermorei Alcock, Illus. Zool. Investigator, Crust., pt. in, pi. 14, 

 fig. 3. " 



Saya de Malha, 125 fins., Sta. C 5; 2 ? ovigerous. Seychelles, 34 fms., Sta. F 7; 1 £. 



Dimensions in mm.: (a) $, C. 1. on median line 18 - 3, 1. entire 27'6, b. entire 19"7, 

 b. without spines 13, b. between tips of horns 8, 1. of horns 9'9. (b) $, C. 1. on median 

 line 18 - 2, 1. entire 25 - 8, b. entire 19-2, b. without spines 13, b. between tips of horns 5, 

 1. of horns 77 (tips broken off), (c) $, C. 1. on median line 12'6, 1. entire 18*2, b. entire 

 14, b. without spines 8'1, b. between tips of horns 6, 1. of horns 6"8. The horns of b are 

 much less divergent than those of a. 



216. Halimus inermis, sp. nov. (Plate 20, fig. 6). 



Cargados Carajos, 30 fms., Sta. B 8 ; 1 $, with slender chelipeds : 30 fms., Sta. B 14 ; 

 1 t, with slender chelipeds: 30 fms., Sta. B 15 ; 1 $, 1 $ immature; the $ has slender 

 chelipeds, its left branchial region has a large spherical excrescence caused by a Bopyrid 

 parasite : 30 fms., Sta. B 17; 1 ? immature, with the horns absent; the bases of the horns 

 are smoothly rounded and polished. Saya de Malha, 47 fms., Sta. C 12; 1 $, with slender 

 chelipeds. Amirante, 28 fms., Sta. E 6 ; 4 $, 4 $, 1 juv.; 2 $ have strong chelipeds, one 

 is the type ; 2 ? are ovigerous : 32 fms., Sta. E 12 ; 1 $, with chelipeds of intermediate 

 size and gape. Seychelles, 39 fms., Sta. F 3 ; 3 «?, 3 ?, 11 juv.: 2 of the males have 

 slender chelipeds, the other is soft-shelled and has stout chelipeds ; one of the females 

 bears eggs, the other two have shed their eggs: 39 fms., Sta. F 4; 1 $ ovigerous: 44 fms., 

 Sta. F 5 ; 3 $, one with strong chelipeds : 44 fms., Sta. F 6 ; 1 $, with weak chelipeds, 

 1 ? : 34 fms., Sta. F 7 ; 1 ? immature : 34 fms., Sta. F 8 ; 1 ? with eggs, 1 ? immature, 

 1 juv.: Praslin, reef; 1 ? ovigerous. 



Adult male. — Body and legs tomentose. Carapace subpyriform, rather high ; regions 

 well defined, excepting the hepatic from the gastric region. Denuded carapace pitted, 

 pits separated. Dorsal surface without spines or tubercles. Two tubercles on ptery- 

 gostomian region in line with projecting angle of buccal cavity, and not visible from above. 

 Rostral horns horizontal, divergent, \ as long as carapace on median line ; space between 

 tips nearly as long as each horn. Supra-ocular eave produced anteriorly in a strong tooth, 

 posterior angle lobiform. Anterior margin of postocular tooth sinuous. Antennae slightly 

 exceeding rostral spines ; the outer anterior angle of the basal segment is produced 

 anteriorly in a stout tooth visible in dorsal view ; outer border partly convex ; a tubercle 

 just outside the green gland. 



Chelipeds rather stout ; palm 1^ times as long as wide ; 2 tubercles on wrist, one on 

 outer surface, one on inner edge ; two tubercles on hand on proximal portion of outer 

 surface, one just below upper margin, the other just above lower margin. Fingers widely 



