AOR1D/E. 87 



[For comparison with the foregoing species, which is 

 new to the British fauna, and to clear up some doubtful 

 points, we add here an account of the other European 

 species of the genus. 



[LEPTOCHEIRUS PILOSUS, Zaddach. 



1844. Leptocheirus fjttosux, Zaddach, Syn. Crust. Prussic. prod. 



p. 8. 

 1862. Protomedeia hirsutimana, Bate & Westwood, vol. i. p. L".S. 



1869. Protomedeia hirsutimana, Norman, " Last Report Dredging' 

 Shetland," Brit. Assoc, Rep. for 1868, p. 284. 



1870. Boeckia ft/pica, A. W. Malm, QEfvers. Kong. VeL-Akad. 

 Forhand. p. 543, pi. v. figs. 1 a-g. 



1894. 'Leptocheirus pilosits, G. 0. Sars, p. 555, pi. cxcvii. 



The largest of the European species; distinguished from 

 the last not only by the smoothness of the back of the 

 segments of the urosome (as are also the two following 

 species), but also by the many-jointed (about 5 articulations) 

 appendages of the antennules ; by the bifid character of 

 the nail of the last perseopods ; the extreme massiveness 

 of the uropods furnished with remarkably strong spines; 

 :md the character of the last uropods. The finger of the 

 second gnathopods in this and in L. guttatus is nail- 

 formed ; but in the two following species it is styliform, 

 and tipped at the extremity with setas. Length 7 mm. 



[LEPTOCHEIKUS PECTINATUS (Norman). (PI. IX. figs. 1-3.) 



1869. Protomedeia pectinata, Norman, " Last Report Dredging 

 Shetland," Brit. Assoc. Rep. for 1868, p. 283. 



1895. Leptocheirus pilosus, A. 0. Walker, Trans. Liverpool Biol. 

 Soc. vol. ix. p. 310. 



1900. Leptocheirus pilosus, Chevreux, Result. Carnpag. sci. Prince 

 de Monaco, Fasc. xvi. Amphip. provenant des Campagnes de 

 1'Hirondelle,' p. 90, pi. xi. fig. 2. 



The passages in inverted commas in the following 

 account are taken from A. M. N/s original description. 



The accessory appendage of the antennules (fig. 1) 

 scarcely equals the first joint of the flagellum in length ; 

 it consists of only two joints. The first gnathopods have 

 coxa, or epimeral part, rounded below (and not produced 

 to a point) (fig. 2); "the propodos is oblong, subparallel- 

 sided, twice as long as broad, distally truncate ; the finger 

 is strong, much longer than the truncated extremity of the 

 propodos .... furnished with a single large spine on the 

 inner edge near the apex," the inner edge of the finger is 

 also microscopically serrated. " Second gnathapods having 

 tho basos long (equal in length to four succeeding joints), 



