100 

 5G. Pandalus (Parapandalus) spinipes, Spence Bate. 



Plesionika spinipes, Spence Bate, Challenger Crust. Macrura, p. 646, pi. cxiii. fig. 2. 



Rostrum about 1.- times the length of the carapace proper, nearly straight 

 in its basal third, moderately ascendant in its distal two-thirds ; its dorsal and 

 ventral borders are both very closely and evenly multiserrate, the dorsal border 

 throughout, the ventral border anterior to a point a little in front of the eye ; 

 its low gastric crest hardly reaches the middle of the carapace. The serrations 

 are comb-like and fixed. 



The 3rd abdominal tergum has its posterior border somewhat convex, but 

 not produced : the 6th is not twice as long as the 5th and is decidedly shorter 

 than the telson : the telson is a little longer than the endopodite of the tail-fan. 



The antennules, antennae and eyes are as in P. martins, but the ocellus is 

 more distinct and usually quite separate from the eye. 



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

 their long terminal joint ; though stouter they are a little shorter than the 1st 

 pair of legs. 



As in the species of Plesionika, the first pair of legs end in a microscopic 

 chela, which is imperfect by reason of the shortness of the fixed finger and is a 

 good deal hidden in seta3. The legs of the second pair are equal and reach just 

 beyond the base of the terminal joint of the external maxillipeds : their chela? 

 are a good deal tufted with seta?. The last 3 pairs of legs are very long and 

 slender, the 5th pair, which are the longest, are as long as the rostrum carapace 

 and first 5^ abdominal somites combined : in all three the posterior border of the 

 merus is, as usual, armed with slender distant spines, and the short dactylus 

 springs from a tuft of lank seta?. 



140 specimens were taken in one haul, off C. Comorin, in 143 fathoms. 



In an egg-laden female taken at random the length of the rostrum is 29 

 millim., of the carapace proper 21 millim., and of the abdomen 57 millim., 

 measured in the middle line. 



Reo-d. No. — . 



Chlorotocus, A. Milne Edwards. 



Chlerotocus, A. Milne Edwards, Eecueil de Figures de Crustacea (1883), pi. 16 : (?) Spence Bate, Challenger 

 Crust. Macrara, p. 673. 



This genus should perhaps rank only as a subgenus of Pandalus, from 

 which it differs only in the form of the 2nd pair of thoracic legs,' in which the 

 carpus is subdivided into two unequal segments only. 



