98 A. R. S. Anderson — Deep Sea Crustacea. ' [No. 2, 



with one large distal and 3 or 4 small spines ; those on the lower margin 

 of this joint are subequal. On the infero-external. margin of the hand 

 is a row of spinules. 



The borders of the suture in the outer plate of the swimrneret are 

 destitute of spinules ; the outer margin of this plate is armed with 

 3 small spines, the smallest near the centre, the largest on the margin 

 of the suture, and the third midway between these two. The external 

 border of the inner plate of the swimrneret is not furnished with a 

 spine. 



Length of carapace exclusive of rostrum 18'5 millim., rostrum 

 3*75 millim., abdomen 32'4 millim., cheliped 27 millim., merus of 

 cheliped 9 - 75 millim., dactylus of cheliped 11 millim. Colour in life ; 

 abdomen light brown, carapace very pale pink dorsally fading into 

 slate colour on the sides. 



Station 184 ; 947 fms., 2 females. 



Tribe ERYONTIDEA. 

 Family Eryontidse. 



Pentacheles, Spence-Bate. 



33. Pentacheles gibba, Alcock. 



Alcock, Ann. Mag. Nat. Hist., Vol. XIII., March 1894, p. 234 ; and 111. Zool. 

 R. I. M. S. ' Investigator,' Crustacea, pt. ii., pi. viii., fig 4. 



A male, measuring 135 millims., from tip of rostral spine to end 

 of telson, only differs from the description of the female in having the 

 first abdominal appendages well developed ; the fifth pair of thoracic 

 legs are chelate. 



Arabian sea, Stations 192 and 193 ; 912-931 and 931 fms. 



34. Pentacheles phosphorus, Alcock. 



Alcock, Ano. Mag. Nat. Hist., Vol. XIII., March 1894, p. 240; Alcock and 

 AndersoD, J. A. S. B., Vol. LXIIL, pt. ii., 1894, p. 165; and 111. Zool. E. I. M. S. 

 ' Investigator,' Crustacea, pt. ii., pi. viii., fig. 2. 



Off the Cochin coast, Station 197 ; 406 fms. 



Tribe SCYLLARIDEA. < 



Family Scyllaridae. 



Arctus, Dana. 



35. Arctus rubens, Alcock and Anderson. 



Alcock and Anderson, J. A. S. B., Vol. LXIIL, pt. ii., 1894, pp. 25 and 26. 

 Indian Ocean, Station 204; 180-217 fms. 



