34 Mr. W. T. Caiman on 



Size. — Our largest specimen is about 73 millim. total 

 length. Sars (I. c. 1871) states that full-grown individuals 

 may exceed 100 millim., and the specimen sent us by him is 

 nearly of that length. Smith records a specimen over 

 110 millim. in length. 



Occurrence. — I have seen only three specimens from British 

 localities — a male and a female from Lower Loch Fyne, depth 

 not recorded, and a female from 40 fathoms in Loch Long. 

 Hitherto the species has only been recorded from Norwegian 

 and New England waters, at depths of 80-300 fathoms in the 

 former (Sars) and 116-524 fathoms in the latter (Smith). 



Pandalus Bonnieri, Caullery. (Pis. I.-1V. fig. 3.) 



Pandalus leptorhynchus, G. O. Sars, " Oversigt af Norges Crustaceer,'' 

 Videusk. Selsk. Forh. Christiania, 1882, no. 18, p. 47, pi. i. figs. 8-10. 



Pandalus (Dtchehpandalus) Bonnieri, Caullery, Res. Scient. d. 1. Cain- 

 pagne du ' Caudan,' Crustaces Schizopodes et Decapodes, Ann. 

 Univ. Lyon, 1896, p. 379, pi. xv. figs. 7-15. 



Non Pandalus leptorhynchus, Kinahan, Nat. Hist. Rev. v. 1858, Proc. 

 Soc. p. 40. 



Non Pandalus leptorhynchus, Stinipson, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1860, p. 38. 



The rostrum (PI. I. fig. 3, a) is more slender and, as a 

 rule, more nearly horizontal than in P. Montagui, curving 

 downwards a little way from the base and then rising gently 

 towards the tip, which is very little above the produced 

 dorsal line of the carapace. In a few specimens, however, 

 the upward curvature is much more strongly marked. The 

 number of spines above varies from 8 to 11, the most common 

 number being 9, and of these three are behind the orbit in all 

 the specimens examined. The number of teeth on the lower 

 edge varies from 6 to 8. 



The inner flagella of the antennules measure from about 

 once and a half to twice the length of the carapace and extend 

 far beyond the tip of the rostrum. The basal lobe is without 

 setae on its anterior edge. 



The scale of the antenna (PI. II. fig. 3, b) is similar in 

 shape to that of P. Montagui, but the terminal spine is less 

 prominent, not projecting beyond the tip of the scale. 



The third maxitliped (PI. II. fig. 3, d) carries an exo- 

 pod reaching to about one third of the length of the ischial 

 joint. In other respects the appendage agrees closely with 

 that of P. Montagui. 



The second peraiopod (PI. III. fig. 3,f) on the right side 

 resembles that of P. propinquus. As in that species, the 



