AORID.E. S5 



Genus COREMAPUS, Norman. 



General characters of antennules, antenna?, perrcopods, and 

 urosome as those of the family. First gnathopods as in 

 Microdeutopus. Second gnathopods scarcely subchelate ; 

 meros produced ami underlying the carpus to more than half 

 its length ; carpus and propodos subequal in length, narrow, 

 parallel-sided ; nail small, not longer than the narrow ex- 

 tremity of the propodos ; the produced linguiform portion 

 of the meros, together with the entire length of the carpus 

 and propodos, furnished with a regularly disposed single row 

 of very long plumose setae. The basos, which in the genera 

 Leptoehiriis and Goesia bears a brush of seta? of a similar 

 character, is in Curemapus devoid of it. 



COKEMAPUS VERSICULATUS (Bate). (PI. IX. rigs. 8-10.) 



1862. j\Iicrodeutoj)us versicitlatus, Bate & Westwood, vol. i. 



p. 2H5, 9 . 



18U9. Microdeuteropus versiculatus, Norman, " Last Report Dredging 



Shetland," Brit. Assoc. Rep. for 1808, p. 282, tf $ . 



1874. Microdeuto^us versiculatus, Stebbing, Ann. & Mag. Nat. Hist, 

 ser. 4, vol. xiv. p. 12, pi. i. tigs. 2-2 /, cf ? 



1905. Coreixajms versiculatus, Norman, " Revised Nomenclature of 

 the Species described in Bate & Westwood's ' British Sessile- 

 Eyed Crustacea,' " Ann. & Mag. Nat. Hist. ser. 7, vol. xvi. p. 78. 



Plymouth (Sate); Salcotnbe (Stebbing); Salcombe, Ply- 

 mouth, and Falmouth (A. M. N.). 



LEPTOCHEIRUS GUTTATUS (Grube). (Pi. IX. figs. 4-7.) 



1866. Protoniedeia r/uttata, Grube, " Beitr. z. Kennt. Istrichen 



Amphipoderiauna," Archiv f. Naturgesch. xxxii. Jahrg. vol. i. 



p. 408, pi. x. tig. 3. 

 1887. Ptilocheirus tricrigfatns, Chevreux, " Crust. Amphip.de la cote 



ouest de Bretagne," Bull. Soc. Zool. France, vol. xii. p. 23, pi. v. 



figs. 3, 4, and woodcut on p. 6. 



1893. Leptocheirus gttttatus, Delia Valle, p. 430, pi. xii. figs. 15-24. 

 1900. Leptocheirus guttatus, Chevreux, Resultats Cainpag. ,-ri. 



Prince de Monaco, Fasc. xvi. Amphipodes de ' 1'lliroudelle,' p. 02. 



The first segment of the urosome (fig. 6) is elevated 

 dorsally with a hump-like process, generally slightly upturned 

 at the extremity and abruptly truncated behind ; this 

 process is generally (apparently not invariably) accompanied 

 by a lappet-like backward directed process on each side. 

 Chevreux's description is " iSegmeutum abdominis quartum 

 in margine posteriore dentibus tribus armatum." 



The first joint of the antennules has a spine on the under 

 side at the extremity ; second joint as long as the first, but 

 much more slender ; third half as long as the second ; 



