15 



A paper was read from Dr. G. Stewardson Brady, F.E. S., 

 O.M.Z.S., which contained an account of the Entomostraca taken 

 during a bathymetrical survey of the New Zealand Lakes, and a 

 comparison of this fauna with that of the English Lakes, which 

 appeared to present very similar physical conditions. 



A paper by Prof. Charles Chilton, F.L.S., dealing with the 

 higher Crustacea obtained during the same survey, was also read. 



Mr. C. Tate Regan, B.A., F.Z.S,, read a paper entitled 

 " A Classification of the Selachian Fishes." The author stated 

 that the Selachii were regarded as entitled to rank, at least, as a 

 well-marked subclass, and he divided them into two principal 

 groups, viz. Trematopnea and Chasmatopnea, the latter including 

 the single order Holocephali. The Trematopnea were arranged 

 as follows : — 



Order. 



Suborder. 



Division. 



Family. 



SubfaTnil3^ 



PLEUROPTERYGII SCJadoselachidcB. 



(_ Vladodontida. 



ACANTHODII {SSS"' 



ICHTHYOTOMI FleuracantUdce. 



rHEXAi^CHOiDEi. \ Chlamydoselacldd^. 



I 1^ J±exancinda. 



'Odontaspididae. 



-Pleueotremata. 



Galeoidei - 



EUSELACHII . 



Is 



QUALOIDEI 



^Htpoteemata. 



Naecobatoidei. 



Lavmida. 



OretolobidcB. 



Scyliorhinidce. 



Car char iidce. 



f CocJiIiodontidiB. 



Syhodoiitidce. 



Cestraciontidee. 



SqualidcB. 



SquatinidcB. 

 NarcohatidcB. 



■ ] RhinohatidcB. 



I Batoidei < -D ■■■, 



{JDasyhatidcB. 



C Cai'cliariinfe. 

 \ Sphyrninag. 



C Hybodontinaj. 

 \ Palajospinacinas. 



C Squalinag. 



X Pristiophoriiife. 



f Rhiuobatinse. 

 \ Pristinse. 



A paper by Mr. F. F. Laidlaw gave an account of the Polyclad 

 Turbellaria from the Cape Verde Islands collected by Mr. C. 

 Orossland, F.Z.S. The collection showed that, on the whole, the 

 fauna of this region of the Atlantic agreed closely with that of the 

 Mediterranean so far as the Polyclads were concerned. The most 

 interesting of the 16 or 17 species represented in the collection 

 were, perhaps, a species of Anonymus (of which several specimens 

 were taken) and Traunfelsia elongata, gen. et sp. nov. The latter 

 was an elongated form remarkable for the possession of marginal 

 tentacles, which were not usually associated with a long narrow 

 body in this class. A unique feature in this genus was the presence 



