REPORT ON THE AMPHIPODA. 363 



description several differences presented by the female. Among other points he mentions 

 that " the first pair of gnathopoda are shorter in the male, with but few hairs near the top ; 

 they are as long as the basis of the second pair of gnathopoda in the female, slender, 

 flexible, with long hairs on the anterior margin, and shorter curved hairs at the distal 

 extremity." 



1866. Bate, C. Spence. 



Crustacea. The Record of Zoological Literature, 1865. Volume Second. 



London, mdccclxvi. pp. 306-366. 



^& 



In reviewing Lilljeborg's work on the Lysianassina, Spence Bate remarks, " the closest inspection 

 of specimens of Caprella eequilihra from the United States of America has not enabled us to 

 distinguish it from specimens found at Hong Kong and England by so much as a variation 

 that could be tortured into being of specific value. This, moreover, appears to be true of 

 forms that we find described as specifically distinct ; but as yet no forms have been 

 determined by competent zoologists as specifically identical in both extreme zones, there 

 being no intermediate locality in which they are known to exist." He thinks " the carcino- 

 logist may have confidence that the figure in the British Museum Catalogue fairly and 

 faithfully represents the general form of the type specimen of Lijsianassa magellanica." 

 Part of the inferior antennae "may have been hypothetically inserted." He draws the 

 conclusion that Lilljeborg's identification cannot be maintained between his Eurytenes 

 magellanica and the Lt/siaiiagsa magellanica of Milne-Edwards. He compares the Anonyx 

 ampulla of the British Sessile-eyed Crustacea with Kr0yer's figure in Voy. Scand., pi. xiii. 

 fig. 2, with which he thinks it identical. 



Spence Bate objects to the placing of Iiis Anonyx ohesus in the new genus Acidostoma "as all 

 the distinguishing conditions are changes in degree only." 



1866. Costa, Achille. 



Descrizione di una specie di Cyanius parassita de' Delfini. Annuario del Museo 

 zoologico della R. University di Napoli pel Cav. Achille Costa. Anno III. — 1863. 

 Napoli, 1866. pp. 82-83. 



He notices that Gu(5riD, in the Icon. Regn. Anim., figures a species of Cyamus parasitic on a 

 species of DeJpliiwis, which he calls Cyamus delphini, and which differs from the parasites 

 on species of Balama in important characters, and that Gervais and Van Beneden have 

 proposed for it a separate genus Isocyamus, without however formulating the generic 

 characters. As he has himself found a Cyamus differing apparently from Guerin's, he 

 concludes that there must be more than one species parasitic on the Delphini. He describes 

 and figures (pi. iv. fig. 2) the new species as Cyamus chelipes, remarking, " Ne possediamo 

 un solo individuo femmina rinvenuto sopra un Delfino comune pescatosi nel golfo di Napoli. 

 Osservazioni. Se la fignra data dal Guerin del Cyamus Delphini h esatta, la nostra specie 

 ne differisce per le antenne interne men lunghe, pe' piedi del primo pajo a mano prensile, 

 per quelli del secondo proporzionalmente meuo grossi e per una diversa forma delle mani 

 de' medesimi, pel primo articolo de' piedi del quinto sesto e settimo pajo non fortemente 

 intaccato nel margine posteriore." Liitken gives no opinion upon this species, probably not 

 having met with the account of it. 



