REPORT ON THE AMPHIPODA. 177 



sont pas pediformes et les pattes de la seconds paire sont terminees par uiio longiie main 

 imparfaitement didactyle dont la griffe est biarticulee. (Voyez Ann. des Sc. nat. t. 20, 

 p. 382, et Hist. nat. des Crust, pi. 29. fig. 12)." 



1838? Costa, Oeonzio Gabriel, and Costa, Achille. 

 Fauna del Eegno di Napoli. Crostacei. 



Preface, pp. 1-4, dated May 15, 1838, briefly notices what had been already done for Italian 

 Crustacea, and proposes to follow Latreille's last classification of the Crustacea in hi.s 

 Families Naturellcs du R. Anirii. 



Animali articolati. Classe I. Crostacei (Crustacea) pp. 1-4. 

 In this paper Latreille's classification is given. 



1838. KR0YER, Henrik Nikol, boni 1799, died 1870 (G. 0. Sars). 



Gronlands Amfipoder beskrevne af Benrik Kroyer. (Som Tiling ; Beskrivelse 

 af nogle andre gronlandske Kraebsdyr, og Opteelling af Krfebsdyrklassens hidtil 

 bekjendte gronlandske Arter, i Forbindelse med nogle zoologisk-geografiskc 

 Bemserkninger over de Ijoreale Krustaceer). Vid. Sel. naturvid. og mathem. 

 Afh. VII Deel. [1838]. pp. 229-326. Tab. I-IV. 



The introductory observations note that Latreille and Milne-Edwards agreed in making twenty- 

 four genera of Amphipods, but of this number had only thirteen in common. Burmeister's 

 inclusion of the Lsemodipoda and Pycuogonidre in the order of Amphipoda is disapproved, 

 and Milne-Edwards' definition and division of that order held to be the most satisfactory in 

 the then existing knowledge of the subject. 



The first species described is called " Lijsianassa Valdii Eh nit," with, the remark emphasized 

 in regard to the second gnathopods, that the sixth joint or finger is altogether wanting, a 

 statement which, nevertheless, requires corroboration. Kroyer assigns the species to 

 Reinhardt, whose manuscript name for it he adopts, but it had, in fact, been previously 

 described by Owen under the preoccupied name Gammarus nugax ; Kr0yer presently 

 changed the name to Anonyx vaJilii ; Boeck in 1870 made it Socrnmes vaJili, but, as his 

 Socanies cannot fairly be distinguished from Epldppiplwra, White, the name will be 

 Eph>pp)ipliora vahlii, Kr0yer (sp.). The next two species, figured and described respectively 

 as " Lysianassa Lagena Hhnlt" and '■^ Lysianassa apiiendlculosa Kr.," are now regarded as 

 the female and male of Cancer nurjax, Phipps, in the genus Anonyx, and will therefore 

 stand under the Tiwne, Anunyx niigax, Phipps (sp.). In A&scrCmng Lysianuissa appendindoiia, 

 Kroyer calls attention to " small appendages, with which the flagella are furnished : the 

 flagellum of the upper antennae along its lower edge, that of the lower antennae along its 

 upper edge. I know," he says, "no other hitherto described Amphipod, in which any- 

 tliing of the kind is found, except in the Gammarus ornatus described by Milne-Edwards." 

 These are the appendages since called calceoli. He also here observes that the number of 

 joints in the antenna; increases with age, thus early giving a warning against the separa- 

 tion of species sini[ily on the ground of differences in the length of the anleunary 

 flagellum. He then proceeds to remark that the three species just described were referred 

 to Lysianafsn as the only one among existing genera capable of receiving them, but that 

 even that would require redefining to include them with propriety. The monstrous size 



(ZOOL. f UALL. EXP. — PART LXVII. — 1887.) XxX 23 



