RATHBUN— MARINE BRACHYURA 257 



Amirante, 34 fins., Sta. E 9 ; 1 juv. : 25—80 fins., Sta. Ell; 2 2 : 20—25 fins., Sta. 

 E 13 ; 1 2 : 30 fins., Sta. E 21 ; 1 $ ovig. Seychelles, 31 fins., Sta. F 2 ; 1 juv. : 39 fins., 

 Sta. F 3 ; 1 ? : 34 fms., Sta. F 8 ; 4 2, 1 $ ; in two of these males the left cheliped, and 

 in one case the first and second legs also, were broken off at the basis before shedding and 

 the ischium is represented by a soft-skinned stump. 



In all the specimens (except where the rostrum has evidently been broken off) the 

 rostrum narrows suddenly and bears two pairs of spinules on the narrow portion. 



236. Parthenope (Rhinolambrus) turriger (Adams and White). 

 Lambrus (Rhinolambrus) turriger Alcock (1), p. 269. 



Seychelles, 39 fms., Sta. F 3 ; 2 2, 2 ? : 34 fms., Sta. F 8 ; 1 $ : 37 fms., Sta. 

 F 9; 2 $. 



Dimensions of $, Sta. F 9, in mm. : C. 1. on median line 12*1, C. b. 1T3, Ch. 1. 64 - 6, 

 Arm 1. 27-2, H. 1. 266, W. L. 2. 26-3. 



237. Parthenope (Aulacolambrus) hoplonotus (Adams and White). 

 Lambrus (Aulacolambrus) hoplonotus Alcock (1), p. 273. 



Cargados Carajos, 20 — 25 fms., Sta. B 17 ; 1 $. C. 1. 5-5 mm., C. b. 8"3 mm. 



238. Parthenope (Pseudolambrus) calappoides (Adams and White) (Plate 18, fig. 12). 

 Lambrus (Parthenolambrus) calappoides Alcock (l), p. 275. 



Saya de Malha, 55 fms., Sta. C 15; 2 ?. Providence, 39 fms., Sta. D 1 ; 1 ?. 

 Amirante, 34 fms., Sta. E 9 ; 1 2 : 39 fms., Sta. E 16 ; 2 ?. Seychelles, 34 fms., Sta. F 8 ; 

 1 2, 2 ?. 



The series shows some variability, but in the main corresponds to Laurie's " var. calap- 

 poides*." The two females from F 8 approach " var. confragosus." In all the specimens, 

 however, the tubercles on inner border of arm are well developed and situated near 

 together at middle of margin. 



It may be noted that in typical calappoides, as figured by Adams and White, the 

 post-hepatic notch is well indicated. 



The largest specimen (?, Sta. E 16), 22"2 mm. long, 27 '2 mm. broad, has the principal 

 tubercles of the carapace very prominent and nodular, inconspicuously granulated, the 

 median gastric tubercle bifid in the median line. In the accompanying £, 17 "8 mm. long, 

 23 "3 mm. broad, the characters are similar but less developed. 



239. Parthenope (PseudolamJ>rus) harpax (Adams and White). 

 Lambrus (Parthenolambrus) harpax Alcock (1), p. 278. 



Amirante, 30 fms., Sta. E 21 ; 1 ? juv. Seychelles, 34 fms., Sta. F 8 ; 4 $, 1 ?. 

 Largest 2, C. 1. 20*4 mm., C. b. 22M mm., Ch. 1. 50'5 mm. 



240. Parthenope (Pseudolambrus) plana, sp. nov. (Plate 20, fig. 10). 

 Amirante, 25 — 80 fms., Sta. Ell; 1 2 adult, 1 2 juv., 2 ? juv. ; the adult male lacks 



chelipeds : 30 fms., Sta. E 21 ; 1 $ type. 



* In Herdman, Ceylon Pearl Fisheries, pt. v, 1906, Suppl. Kept, xl, p. .'H)0. 



33—2 



