98 



In an egg-laden female, taken at random, the length of the rostrum is 32 

 millim., of the carapace 16'5 millim., and of the abdomen 48 millim., measured 

 in the middle line. 



Arabian Sea, off the south and south-west coast of India, 360, 406, and 

 .V> 7 fathoms : Bay of Bengal, near the An damans, 561 fathoms : Andaman Sea, 

 271, 405, 490, and 500 fathoms. 



1838 /m * A!,- -v. 8519 8577 46 4793 3123 3169 



D J TVT oazl 103 /m At, \ 0519 8&77 4O 4Y93 3123 31(59 



Regd. JNos. : -^- (Types of the species) : -g- : : y : : : -9- : 



6822 , 335-361 _ 1446-1447 . 1945-1948 . 1965-1967 

 ~9~ ' 10 ' 10 ' ~ 10 ' 10 ' 



54. ? Pandalus (Plesionika) ocellus, Spence Bate. 



? Nothocaris ocellus, Spence Bate, Challenger Crust. Macrura, p. 657, pi. cxiv. fig. 3. 



Distinguished from P. martius by the following characters : 



The rostrum is shorter : dorsally it is armed along its whole extent with 

 spines, those on the gastric crest and at the base being close together, those 

 beyond the eyes being distant : ventrally, beyond the end of the antennular 

 peduncles, it is also armed with distant spines. All the spines are fixed. 



The telson is shorter than the endopodite of the tail fan. 



The ocellus at the dorsal margin of the eye is almost independent. 



The antennular flagella are much longer than the entire body. 



The external maxillipeds reach beyond the tip of the antennal scale by the 

 whole length of their long terminal joint. All the legs are longer and slenderer : 

 the 1st pair reach beyond the tips of the external maxillipeds by almost the 

 whole length of their dactylus and propodite : the 2nd pair on the left side 

 almost reach to the end of the external maxillipeds : the fifth pair are as long as 

 the entire body less the telson. In the last 3 pairs of legs the spines on the 

 posterior border of the merus are few and very fine. 



In the Investigator collection is a single specimen from the Andaman Sea, 

 173 fathoms. 



According to Spence Bate's figure, the 2nd pair of legs on the right hand 

 side, if extended, would reach a long way beyond the end of the external maxilli- 

 peds. In our single specimen this leg is wanting. 



Regd. No. f. 



55. Pandalus (Plesionika) bifurca, Alcock & Anderson. 



Plesionika bifurca, Alcock & Anderson, Journ. Asiatic Soc. Bengal, Vol. LXIII. pt. 2, 1894, p. 155. 

 ILLUSTRATIONS OF THE ZOOLOGY OF THE INVESTIGATOR, CBUSTACEA, PLATE LI. FIG. 6. 



Rostrum from half to two-thirds the length of the rest of the carapace, its 

 trie carina high and compressed, serrated in almost all its extent both dorsally 



