356 Messrs. J. Wood-Mason and A. Alcock on 



EUKYPHOTES. 



Family Glyphocrangonidae. 



Glyphocrangox, a. M.-Edw. 



Section 1. 



2.J. Glyphocrungon investujntoris, W.-M., var. nov. 

 andamancnsis. 



Ghjphocranqon invent ig<itoris, Wood-Mason, Ann. A: Mag. Nat. Ilist. 

 (01 vii. p! 191, $. 



? . Differs from the typical Irnm in the following points : — 

 It is much larger ; the antennal, branchiostegal, and lateral 

 spines of the carapace, especially the last-named, are more 

 strongly developed, and the cervical groove is broader and 

 deeper ; the carapace with rostrum is, in proportion to the 

 total length, somewhat shorter; the lateral and subdorsal 

 ridges of the telson are much less distinctly and sharply 

 granulated, being in fact little more than roughly waved ; 

 and, linally, the colour in life is uniform pink. 



Variety. Typical form, 

 niilliiu. niillim. 



Total length from tip of rostrum to tip 



of telson 115 01 



Length of carapace from middle of pos- 

 terior margin to tip of rostrum . . 51 39 



Length of carapace from front of the 

 posterior rostral spines to middle 

 of hinder margin 32 2o"5 



Length of rostrum from front of postt;- 



rior spine to tip 20 15 



Breadth between lateral spines of 



carapace 28"2.5 20'5 



Length of abdomen 63 51 



A young female differs from the above and from young of 

 the same size and age of the t\ pical form in its much longer 

 rostrum, less tuberculate integument, longer and more diver- 

 gent lateral carapacial spines, in all of which respects it recalls 

 G. aruleata, A. M.-Edw. 



The total length from tip of rostrum to tip of telson 55 

 millim., length of caiapace from ti[) of rostrum to middle of 

 posterior margin 2G niillim., length of carapaco from one of 

 the posterior rostral spines to middle of himler margin 13"5 

 millim., breadth between tips of lateral spines of carapace 

 148 millim., length of rostrum from front of one of the poste- 

 rior spines 12 5 millim., length of abdomen 28o millim. 



