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



following new species, " Lanccola Loveni" " LanceoJa Sayana" (Fig. 1. la and lb.), Lanceola 

 felina, Lanceola serrata, Lanceola curticeps, "Lanceola Clausii." He considers that the 

 genus Daira, Milne-Edwards, 1830, is either identical with or very near to Paraphronima, 

 Claus, and that Dairinia, Dana, is quite distinct, synonymous with Thamyris, Spenoe Bate, 

 and belonging to Claus' family Lyca^idse. Dairinia [or rather Dairilia] was substituted 

 by Dana for Daira, the latter being preoccupied. Bovallius describes the new species 

 Paraphronima chjpeata (Fig. 2), Paraphronima californica, "Paraphronima Edwardsii," 

 and, for the sake of comparison, Parajyhronima gracilis, Claus, and Paraphronima crassipes, 

 Claus. He argues that Tyro, Milne-Edwards, 1840, is the same as Chjdonia, Dana, which 

 the latter author placed among the Corophidae instead of the Hyperidas. It may be noted 

 that G. 0. Sars had already, in 1882, transferred Chjdonia to the Hyperidfe, but without 

 recognising its identity with Tyro. Bovallius gives preliminary descriptions of the new 

 species, '^ Tyro Clausii," Tyro atlantica, Tyro marginata, "Tyro Sarsii" (Fig. 3 and 3a), 

 " Tyro TuUhergii." Lastly he upholds the genus Tanria, Dana, 1853, as distinct both 

 from Hyperia, Latreille, and Metoecus, Kr0yer; he gives figures copied from Dana of 

 the type species, Tauria macrocephala, and concludes with the following observation : — 

 " The Tauria medusarum O. Fabr. [A. Boeck] is to be united with the genus Hyperia, 

 because the development of the carpal process is gradual through the species and no generic 

 character. But as the name H. medusarum has been already given by 0. F. Mijller to 

 another Hyperia, I propose for it the name Hyperia Kroeyeri, the diagnosis being the 

 same as that given by Boeck 1. c. pag. 83. Tauria abyssorum, A. Boeck, must be named 

 Hyperia abyssorum, A. Boeck." As already observed, if G. 0. Sars is right in identifying 

 Tauria abyssorum, Boeck, with Tauria medusarum, Boeck, then Ryperia abyssorum will 

 take precedence of Bovallius's Hypieria kroeyeri. The remark is scarcely accurate that 

 Spence Bate " has been deceived into transferring Hyperids with totally opposite characters 

 to Dana's genus," since Hypjeria tauriformis. Bate and Westwood, the species referred to, is 

 not transferred to Dana's genus at all, but I think that Bovallius is justified in dropping 

 the specific name tauriformis on the ground of its misleading character, though otherwise 

 (see Note on Norman, 1869, in Appendix) it would take precedence of the name 

 kroeyeri which Bovallius proposes, ^s well as of Boeck's abyssorum. 



1885. Bovallius, Carl. 



Mimonectes, a remarkable genus of Amphipoda Hyperidea. With 3 Plates. 

 (Presented to the Eoyal Society of Sciences of Upsala the 10th October 1885.) 

 Upsala, 1885. 



The name refers to the "mimicry" presented by these Amjjhipods ; the creature offering "a 

 striking resemblance to a little jelly-fish." A new family is constituted as follows : — 

 " j\Iimonectida3. Hyperids with the head and a part or the whole of the pereion developed 

 into an enormous balloon-shaped globe. Ocelli not united but dispersed on each side of the 

 head. The upper antennae long, more or less straight. The lower small, four-jointed. The 

 mandibles without palp. The maxillipeds well developed." 



The new genus Mimonectes is thus defined ; — " Caput magnum, latum, valde inflatum, simul 

 cum pereio sphaeram formans. Oculi parvi, dispersi. Anteimx superiores longae, rectse, 

 flagello articulate. Antennss iuferiores parvse. Plenn compressum non infiatum. Pedes 

 uri duos ramos gerentes." "The genus Mimonectes is easily distinguished from other 

 Hyperids by its globular shape, with all the legs, branchial sacks, ovigerous lamellae, and 

 the urus hanging down, similar to the filaments of a Medusa. But it differs also by 

 some anatomical and morphological characteristics from all or most of the other Hy^jerids. 



