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



EUKYPHOTES. 



Family Glyphocrangonidae. 



Glyphocrangon, a. M.-Edw. 



Section 1. 



25. Glyjjhocrangon investigatoris^ W.-M,, var. nov. 

 a7idamanensis. 



Glyphocrunqo'n nicest iff atorix, Wood-Mason, Ann. & Mag. Nat. Hist. 

 (6) vii. p! 191, §. 



$ . Differs from the typical form in tlie 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, finally, the colour in life is uniform pink. 



Variety. Typical form, 

 inillim. millim. 



Total length from tip of rostrum to tip 



of telaou 115 91 



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 26'6 



Length of rostrum from front of poste- 

 rior spine to tip 20 15 



Breadth between lateral spines of 



carapace 



28-25 20-5 



Length of abdomen 63 61 



A young female differs from the above and from young of 

 the same size and age of the typical form in its much longer 

 rostrum, less tuberculate integument, longer and more diver- 

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

 O. aculeata, A. M.-Edw. 



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

 millim., length of carapace from tip of rostrum to middle of 

 posterior margin 26 millim., length of carapace from one of 

 the posterior rostral spines to middle of hinder margin 13*5 

 millim., breadth between tips of lateral spines of carapace 

 14-8 millim., length of rostrum from front of one of the poste- 

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



