XXIV 



THE VOYAGE OF H.M.S. CHALLENGER. 



Of the forty-eight species here enumerated, all but about half a dozen have been 

 brought to light by the Challenger researches, and of the genera over which these species 

 are distributed thirteen out of forty-three are new. 



It may be convenient here to group together the names of the thirty-one new genera 

 established in this Report : — 



Cheirimedon. 



Platamon. 



Onesimoides. 



Sophrosyne. 



Cyclocaris. 



Socarnoides. 



Acontiostoma. 



Kerguelenia. 



Valettia. 



Cardenio. 



Platyischnopus. 



Qlldiceroides. 



Zaramilla. 



Acanthechinus. 



Atyloides. 



Streetsia. 



Atylopsis. 



Harpinioides. 



Stenopleura. 



Cleonardo 



Eusiroides. 



Synopioides. 



Parelasmop>us. 



Dryopoides. 



Paradryope. 



Camacho. 



Chosroes. 



Dodecas} 



Caprellinoides. 



Protellojms. 



Sympronoe. 



The new generic names proposed in the Report in exchange for older but preoccupied 

 names of valid genera are as follows : — Caprellinopsis for Capi^ellina, G. M. Thomson ; 

 Eusceliotes for Euscelus, Claus ; Lysianax for Lysianassa, Milne-Edwards ; Pariambus 

 for Podalirius, Kr0yer ; Phorcorrhapliis for Phorciis, Milne-Edwards ; Phoxocephalus 

 for Phoxus, Kr0yer; Priscillina for Priscilla, Boeck. Haustorius, Miiller, is reinstated 

 in place of Lepidactylis, Say, Phtisica, Slabber, in place of Proto, Leach, and Scind, 

 Prestandres, in place of Tyro, Milne-Edwards, and Clydonia, Dana, ^ginella, Boeck, 

 is taken to include the preoccupied jEgina, Kr0yer. For Constantia, Dybowsky, 

 Costantia, a form accidentally occurring in Dybowsky's own work, is adopted. For 

 Euryteyies, Lilljeborg, Eurythenes is accepted from the pen of Professor S. I. Smith. 

 For Dryope, Sp. Bate, although preoccupied, no alternative name is for the present 

 offered, its relationship to the new genus Dryopoides requiring further consideration. 



Of the hundred and eighty species which the Report describes as new, it is possible 

 that a few come too near to older species to deserve specific distinction. Especially in 

 the genera Hippomedon, Leucothoii, and Aora my suspicions are aroused that I may have 

 introduced some unnecessary names ; but such errors of judgment, if found to exist, will 

 also, I hope, be found to be few. 



' This genus was first published in a preliminary notice in 1883. 



