REPOllT ON THE AMPHIPODA. 50 9 



the second gnathopods and telson. " Ettsirus Holmii, n. s. (Tab. xxii, Fig. l-lh), is said 

 to be very like Eusirus cuspidatus in respect to the carina and dentation of the back and in 

 the form of the hands, wliile it much resembles Eusirus longipes by the length of its legs, 

 which, however, are considerably longer than in the last-named species, but it is said to 

 differ from both the species mentioned by its specially long upper antennte, by the size and 

 form of the three first pairs of epimera, and in several other respects. The length of 

 an adult female was 53 mm. Microdeutopus areticus, n. s. (Tab. xxii, Fig. 3), is also 

 remarkable for its size, attaining a length of 29 ram. Dr. Hansen was under the impression 

 moreover that none of his specimens were full grown. 



A description and figures are given (Tab. xxi, Fig. 5-5c) of the maxillas and maxillipeds of 

 Socarnes Udenticulatus (Sp. Bate). Of '^ Stegocephalus ampulla (Phipps) (Tab. xxi, 

 Fig, 10-lOc)" the mandibles and maxilla; are described and figured. In a footnote, 

 however, Dr. Hansen says that, judging by the length in comparison with the depth of the 

 fourth side-plato, and by the form of the widened second [first free] joint of the fifth 

 perjeopod in Phipps' figure, as well as by the size of the animal, Phipps' species must 

 be the same as Stegocephaliis kessleri, Stuxberg. His own specimens ought therefore, he 

 says, to have been named StegocepJiahis hiflafns, Kr0yer. Dr. Hansen also states that 

 Stegocephalus liessleri, Stuxberg, is pretty certainly the same as Stegocepiltalus ainpullu, 

 forma altera. Goes. 



Oi " Arantlwsfppheia Malmgrenii (Goes) (Tab. xxi. Fig. 11, 11</. )," the maxilhe are described 

 and figured. 



" ? Oediceros micropis G. O. Sars (Tab. xxi. Fig. 12.)," is thought to be possibly an intermediate 

 form between Oediceros microps, Sars, and Oediceros viacrocheir, Sars. 



Boeck's Acanthonotozoma is altered into Araidhrmotosoma for the three species, crisfatum (Owen), 

 serratum (O. Fabr.), and inflafum (Kr0yer). Of the last species Hansen's largest specimen 

 was " 18,5 ■""" ii length, and the postero-lateral angles of the first two pleon-segments were 

 acute, making it doubtful whether Boeck's Acmithonotozoma inflatum, 6,5 ■"■" long, and 

 with these angles rounded, is really the same as Kr0yer's species. 



To Acanthozone cuspidata (Lepechin) the synonyms assigned are "Oniscus cuspidatus Lepechin," 

 " AmjMthoe Hystrix K.r0yer," " Acanthozone cuspidata Boeck," and the species is said to 

 be easily distinguishable from all other Amphipods, without notice of the doubt thrown 

 upon this point by E. J. Miers. See Note on Lepechin, 1780. 



Of " Gammarus Locusta (Lin.). (Tab. xxii. Fig. 2-26.) " the maxilliB and maxillipeds are 

 figured, with a view more particularly to show the basal joints. 



Melita dentata (Kr.) is recorded, and " Gammarus dentatus forma altera Goes " is described as a 

 new species " Melita Goesii n. s. (Tab. xxi. Fig. 13)." It is a little singular, if the two forms 

 are really distinct, that a single specimen of each should have been obtained at the same spot, 

 the two specimens also closely agreeing in si^e ; but the differences are said to be numerous. 



" Melphidippa spinosa (Goes) " is identified with " GainmartLS sp)inosus Goes," but doubtfully 

 with Boeck's Melphidippa spinosa. 



A female Podocerus is named " (?) Podocerus hrevicornis G. 0. Sars." Nine specimens of 

 " ^Egina spiuosissima Stimpson " were obtained, and Dr. Hansen observes that the species 

 from the "Vega" expedition named /Egina ecldnata is obviously this species. 



Of " Caprella spinosissima Norman (Tab. xxii. Fig. 4, 4a.) " the maxillse are described and 

 figured, and the statement made that on the second pair and three hindmost pairs of legs 

 there is a short but weU chitinized and movable first joint. This species should rather be 

 called Caprella horrida, Sars. See p. 571, in Note on Sars, 1885. 



The other species here recorded are named " Parathemisto ahyssorum A. Boeck ; " " Socarnes 

 Vahlii (Kr.);" " Anonyx lagena Kr.;" " Anonyx gjdosus Kr.;" " Orchomene pectinattis 

 G. 0. Sars;" " Harpinia plumosa (Kr0yer);" " Ilalicreion latipes G. 0. Sars;" " Aceros 



