254 PERCY SLADEN TRUST EXPEDITION 



Providence, 50 fins., Sta. D 11 j 1 $. Amirante, 39 fins., Sta. E 16; I $. 



The largest specimen (Sta. D 11) is 8 mm. long. Neither shows any bifurcation of the 

 lateral branchial spine. 



225. Tylocarcinus styx (Herbst). 

 Tylocarcinus styx Alcock (l), p. 235. 



Salomon; 2 $, 5 $ (1 adult): Egmont, reef; 1 ? ovigerous. Praslin, reef; 1 $ ovigerous. 

 Coetivy; 7 $,7 ? (1 juv.). 



226. Chlorinoides longispinus (de Haan). 

 Paramithrax (Chlorinoides) longispinus Alcock (1), p. 242. 

 Providence, 29 fins., Sta. D 3 ; 1 $. 



C. 1. from posterior margin to end of horn 12 mm., C. b. without spines 67 mm. 

 The knobs on the spines are very slight. 



227. Schizophrys aspera (Milne Edwards). 

 Schizophrys aspera Alcock (l), p. 243. 



Salomon; 1 ? ovigerous. Amirante, 29 fins., Sta. E 2; 1 $: 34 fins., Sta. E 9; 1 £juv. : 

 25—80 fins., Sta. Ell; 2 $, 1 ? ovig., 4 juv. : 20—25 fins., Sta. E 13; 1 $, 3 juv. : 30 fins., 

 Sta. E 21 ; 1 $, 1 ? ovig. Seychelles, 37 fins., Sta. F 9 ; 1 juv. 



228. Cyclax suborbictdaris (Stimpson). 



Cyclax (Cyclomaia) suborbicularis Alcock (l), p. 245. 



Mithrax suborbictdaris Stimpson, Smithson. Misc. Coll., xliv. 1907, p. 18, pi. 4, fig. 1. 

 Peros, Coin; 1 ? ovig. Salomon; 1 $. Egmont, reef; 1 ? ovig. Praslin, reef; 2 $, 

 1 ? ovig. Coetivy; 5 $ (2 juv. and soft shell), 2 $ ovig. 



229. Ophthalmias cervicornis (Herbst). 

 Stenocionops cervicornis Alcock (1), p. 248. 



Amirante, 29 fms., Sta. E 2 ; 1 $. Seychelles, 34 fins., Sta. F 8 ; 1 ? juv. 



Carapace behind the orbits suboval, very uneven, tuberculate, tufts of hairs on many 

 of the tubercles and on the horns; a sharp supero-posterior margin forms a prominent 

 overhanging intestinal lobe. Kostral horns slender, § as long as rest of carapace, sub- 

 parallel, bowed slightly outwards, tips recurved upward. A long slender supra-ocular 

 spine is broken off in our specimens. Basal antennal joint armed with two blunt spines, 

 one at anterior angle, the other on outer margin and directed downward and backward. 

 A strong spine just outside the green gland, another on the pterygostome ; subhepatic 

 region tuberculous. Extremities of epistome dilated, overhanging the buccal cavity which is 

 strongly widened anteriorly; exognath longitudinally grooved; first four segments of 

 endognath deeply hollowed ; condyle at distal end of ischium a smooth oval lobe, inner 

 margin of ischium denticulate ; merus strongly produced at the outer angle, inner margin 

 deeply incised ; palpus lamellate. 



Chelipeds of male as long as carapace and half the rostrum, moderately stout and 

 tuberculate ; fingers f as long as palm, which is twice as long as wide. First leg If times 



