1644 THE VOYAGE OF H.M.S. CHALLENGER. 



Telson breve, ovatum, einarginatum. Mas ignotus. Longit. 15 mm. Localite. Cratere de 

 Fayal, 16 juillet 1887." Compare Note on Barrois, 1888 (p. 1648), and Note on de Guerne, 

 1888 (p. 1652). 

 M. de Guerne observes that while the species of Orchestia from the sea-shore are numerous, 

 the only species hitherto known under conditions like those of Orchestia cheweuxi is 

 Orchestia tahitensis, Dana, found on an extinct volcano in Tahiti, several miles from the 

 sea and 500 metres above its level ; for a correction of this statement see Note on Barrois, 

 p. 1649. 



1887. Hansen, H. J. 



Malacostraca marina Groenlandiae occidentalis. Oversigt over det vestlige 

 Gr0nlands Fauna af malakostrake Havskrebsdyr. Ssertryk af " Vidensk. Meddel. 

 fra den naturk. Foren. i Kjobh. 1887." Kjobenkavn, 1887. 



Besides various notices in the introductory part of this valuable work, the Amphipoda occupy 

 pages 55 to 177, pages 217 to 222, and pages 225, 226. Plates II. to VI. are concerned 

 with this group. A hundred and fifty-one species are named, some with corrected synonymy, 

 some with notes of locality, and some with more or less full discussion, the new species 

 being described in Latin and in general figured. The new species are named — Aridias 

 neglectus (Tab. II. fig. 4) on which see below ; Anonyx groenlandicus (Tab. II. figs. 5-5(?) ; 

 Tryphosa pulchra (Tab. II. figs. 6-6e) ; Prinassus Nordenskiijldii (Tab. II. figs. 7—7/, 

 Tab. III. tigs. 1-lc); Amphilochus oculatus (Tab. III. figs. 2-2c) ; Metopa latimana, of 

 which however Dr. Hansen begins his description by saying " Specimen singulum 

 vix adultum vidi. — Met. affini Boeck valde similis, structura pedum primi et secundi 

 pariurn diversa," Metopa groenlandiea (Tab. III. figs. 7-7e) ; Metopa neglecta (Tab. 

 III. figs. 9-96), with the synonymy " Metopa longimana Boeck Skand. og Arkt. 

 Amph. PI. XVII. figs. 5-5ra (figura 6 et descriptio ad Met. longimanam pertinent) ' : ; 

 Metopa carinata (Tab. IV. figs. 3-3e) ; Oediceros eurvirostris (Tab. IV. fig. 4) with the 

 synonymy " Oediceros hjnceus Boeck, Skand. og Arkt. Am. PI. XIII. fig. 4 (Descriptio 

 ad Oed. lynceum pertinet)"; Monoculodes crassirostris (Tab. IV. figs. 5-5/); Mono- 

 culodes simplex (Tab. IV. figs. 6-6/<) ; Halimedon ohtusifrons (Tab. V. figs. 1-le) ; 

 Aceros distinguendus (Tab. IV. fig. 8) with the synonymy " Oediceros obtusus, 'alia forma, 

 Goes, Op. cit. p. 527, Tafl. XL. fig. 24" ; Paramphitlioe Boeckii (Tab. V. figs. 3-36) with 

 the synonymy " Pleustes pulchellus Boeck, Skand. og Arkt. Amph., PI. XXIII. fig. 1 

 (Descriptio ad Par. pulchellam referenda est) " ; " Amphithopsis Olrikii " (Tab. V. figs. 

 5-56); Amphithopsis glacialis (Tab. V. figs. 6-6c); Tritropis oculata {Tab. V. figs. 7-7e), 

 the description of which is followed by the observation, " Haec species nova a speciebus 

 ceteris affinibus hujus generis imprimis differt oculis permagnis superne valde inter se 

 approximatis, antennarum primi paris articulo basali perlato quam articulo secundo longiore, 

 articulo tertio perbrevi, pedum septum paris articulo secundo perpaulo longiore quam 

 atiore " ; Melita amoena (Tab. VI. figs. 1, la); Podoceropsis Lindahlii (Tab. VI. figs. 2, 2a); 

 Podocerus nanoides (Tab. VI. figs. 4-46) ; Unciola crassipes (Tab. VI. figs. 6, 6a) ; Unciola 

 taticornis (Tab. VI. figs. 7-76). There is also a named variety, " Caprella microtuberculata 

 G. 0. Sars, var. spinigera." 

 The new genus Prinassus is launched without distinction between the generic characters and 

 those of the type-species, except that the author says, " this new and interesting form shows 

 in the shape of the antennae and limbs and in the coalescence of the fifth and sixth segments 

 of the pleon so much difference from its nearest relations, Pontoporeia and Priscilla, that I 

 have been forced to institute a new genus for it." The mouth organs are not described. 

 The antennas (in the female) are short, with no accessory flagellum ; the gnathopods are 



