131 



The sculpture of the abdominal terga consists of low blunt " worn " ridges, 

 in more or less distinctly longitudinal series. The carina? of the 2nd and 3rd 

 and of the anterior half of the 4th terga are low, blunt, and " worn." 



In the male the antennular flagella are a good deal longer than their 

 peduncle, and the outer flagellum is almost foliaceous in its proximal thr^e- 

 fourths. 



The length of the antennal scale is twice its breadth : the antennal flagellum 

 is as long as the distance between the tip of the rostrum and the middle of the 

 telson. 



The external maxillipeds do not quite reach the tip of the antennal scale. 



The 2nd pair of thoracic legs are shorter than any of the last 3 pairs. The 

 dactyli of the 4th and 5th pair of legs have the outer margin produced as a 

 microscopic incurved claw. 



Colour in life, delicate pink. 



Tn an adult female the length of the carapace and rostrum is 37 millim., of 

 the abdomen 51 millim., measured in the middle line. 



Found only in the Arabian Sea, in the neighbourhood of the Laccadives and 

 northwards, at 740, 770, 824, and 947 fathoms. 



Eegd. Nos. ^ and g (Types of the species) : % : ^! . 1«» . ?g* 



78. Giyphocrangon hastacauda, Spence Bate. 



Glyphocrangon hastacauda, Spence Bate, Challenger Macrura. p. 519, pi. xoiii. fig. 5 : Alooek and Anderson, 

 Jouru. Asiatic Soc. Bengal, Vol. XLIII. pt. 2, 1894, p. 151. 



Differs from G. investigatoris in the following points : — 



The anterior half of the 3rd or " dorso-lateral " crest is present, forming a 

 post-antennal crest continuous with the pre-eminently large vertically-compres- 

 sed antennal or orbital spine. 



The anterior half of the " subdorsal " crest, the posterior portion of the 

 " dorso-lateral " and " lateral " crests, and the anterior half of the " lateral " 

 crest all end anteriorly in small spines, the spine of the last named crest not 

 approaching the anterior border of the carapace. 



The " dorsal " and anterior half of the " subdorsal " crests are crenulate but 

 all the other crests are smooth to the naked eye. 



The surface of the carapace between the crests is smooth and is covered 

 ■with a fine deciduous pile. 



The dorsal surface of the abdomen is merely wrinkled and dimpled, and the 

 abdominal carina?, though corresponding exactly with those of G. investigatoris 

 in position and number, are lower and blunter, especially on the anterior somites. 



