SPIDER CRABS. RATHBUN. 9 



differ & from the true P. wyvillethomsoni in having the two 

 branchial regions approximating the median line, and in 

 being devoid of a spine at the hinder end of the inner orbital 

 lobe. 



The name P. turbynei Stebbing 9 cannot be applied to the 

 above form because it is differentiated by the characters 

 set forth by Stebbing ; e.g., the propodus of the penultimate 

 leg of turbynei is about twice as long as the same article in 

 the young male of similar (larger) size of P. alcocki. Compare 

 Stebbing's pi. v. with Doflein/s pi. xxii., fig. 1. 



Genus EPHIPPIA.S, 10 gen. nov. 



Carapace elongate-pyriform, with a long neck ; inflated 

 behind ; a large, posterior, median, saddle-like prolongation. 

 Rostnim of two long horns. Eyes not retractile in the orbits. 

 No preocular or supraocular spines. A postorbital spine 

 remote from orbit. Basal antennal joint rather narrow ; 

 free joints visible in dorsal view. Epistome elongate. The 

 external maxillipeds close the buccal cavity, the merus is 

 as wide as the ischium. Chelipeds not much enlarged. First 

 ambulatory leg extremely long and stout. Abdomen seven 

 segmented in both sexes. 



Related by its maxillipeds to the Alliance Inachoida of 

 Alcock, but in the elongate form of the anterior part of (he 

 carapace, it suggests many of the members of the Alliance 

 Macropodioida or Leptopodioida of Alcock, such ;'-< Marr<>- 

 podia 11 and fttenorynchus 12 -. 



Type and only species, E/>Jii t>/>ia* <"nde<u>onrf. 



EPHIPPIAS KNDKAVOURI, #p. nov. 

 (Plate xv.) 



Type-locality. South of Kangaroo Island, Investigator 

 Strait, 8. Australia ; male holotype (E3129). At the same 

 place was taken an ovigerous female (E3128). much smaller 

 than the male. 



Measurements. Male holotype, length of carapace on 

 median line, including posterior hump 82.7, length to end of 

 rostrum and posterior hum]) 111.7, width of carapace, 

 exclusive of spines, 55mm. 



9. Stebbing South Afric. Crust., pt. ii., 1902, p. 3, pi. v. 



10. F0t7T7r<or, a saddle, in allusion to the saddle-like posterior projection 

 of the carapace. 



11. Leach Edin. Encyc., vii., 1814, pp. 385, 395. 



12. Lrmarck Hist. Anini. sans Vert,, v., 1818. p. 23H. 



