1:5:', 



2nd piiir of legs are shorter than those behind them jmd lianlly reach the tip of 

 the antennal scale. 



In an egg-laden female the carapace (rostrum included) is :!<) millim., the 

 abdomen 41 millim. long, measured in the middle line. 



Koimd only in the Andaman Sea, at T70-41 ( J, 405, 4 < .n, ;md .")<<> fathoms. 



This species very closely resembles G. hastaemtdtt, but can be at once dis- 

 tinguished (1) by the fact that the anterior part of the 3rd or dorso-lateral crest 

 of the carapace ends behind the orbital spine instead of being continuous with 

 it. and (2) by the elongate-oval antennal scale. 



. AT 8522 ,rn r ,v -> 1399-1401 2357 251-1-:*.-, I. % 



Regd. Nos. ( Type of the species) : ^- : . 



Subgenus PLASTOCBANGON, nor. 



Differs from Gtyphocrcvngon only in the following particulars : 

 The eyes are small and in life are of an opaque yellow-ochre colour, in spirit 

 they are of the same neutral tint as the carapace. The dorsal and subdorsal 

 crests of the carapace are broken up into lines of tubercles. The branchiae are 

 only 9 on either side, arthrobranchiae being absent from the Xth and Xlth 

 somites: otherwise the branchial formula is as in nh//>li<n-,-tiit,/,>,,. 



Synopsis of the Indian species of the svhij'-'in'f Plastocrangon. 



I. The anterior half of the 4th or " lateral " crest of the carapace ends in a 

 huge vertically-compressed wing-like spine, lyinir behind and external 

 to the branchiostegal spine, and projecting f'sir beyond the anterior 

 border of the cavnpaee : 



1. The anterior half of the 4th or " lateral " crest of the carapace 



has no spine but the large spine aforesaid : posterior half of 

 3rd or " dorso-lateral" crest entire ... ... ... P. 



2. The anterior half of the 4th or " lateral " crest of the carapace 



is cut into two portions, the anterior of which is the large 

 spine aforesaid : posterior half of Urd or " dorso-lateral " crd&t 

 cut into two lobes ... ... ... ... p. 



IT. The anterior half of the 4th or " lateral " crest of the carapace is cut into 

 two small teeth, the anterior of which falls far short of the anterior 

 border of the carapace. Abdominal terira find pleura crisplv sculp- 

 ted ... P.ancescent. 



so. Glyphocrangon (Plastocrangon} CWCCHCCHN. Wood-Mason. 



(Hyphncranrion ctKCftrfii*, Wood- Mason, Ann. MK. Nat. Hist., Nov. 1801, p. 357. 



ILLUSTRATIONS OF THK ZOOLOGY OK TIIK INVESTIGATOR, CRUSTACEA. P|,TF VTT. Kn.. ." . 



The rostrum, the length of the free portion of which is nearly equal to that 

 of the rest of the carapace measured in the middl line, is traversed dorsally by 



