•fT 



THE ANXALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[EIGHTH SERIES.] 

 No. 112. APRIL 1917. 



XXYI. — A Revision of the Chipeoid Fishes of the Genera 

 Poinolobiis, Brevoortia and Dorosoina, and their Allies. 

 By 0. Tate Regan, M.A. 



(Published by permission of the Trustees of the British ^Euseuui.) 



The genera dealt with in this revision are the Clupeinse with 

 a distinct notch in the middle of the upper jaw ; these have 

 usually been .placed in two distinct groups — those with 

 terminal mouth and the last dorsal ray not prolonged being 

 associated witii Clupea, and the others, with inferior mouth 

 or last dorsal ray prolonged, forming a group apart (Chato- 

 essinse of Giinther, Dorosomatidse of modern authors) ; in 

 my judgment this is quite an artificial arrangement. AH 

 these tishes appear either to be migratory, entering rivers to 

 spawn in fresh or brackish water *, or are permanently 

 tluviatile (e. g., Gudusia, Signalosa) . 



Synopsis of the Genera, 



I. Gill-rakers of epibranchial of first arch foklin<r downwards, tliose 

 near the ano^le overlapping the gill-rakers of the ceratobranchinl. 

 A. Scales with edges entire or feebly serrated ; normal scales from 

 occiput to dorsal fin ; pelvic fins 9-rayed ; operculum with 

 radiating grooves. 

 Teeth on vomer and palatines (rarely deciduous 



iu adults) 1 . Ca$pialo$a. 



* The breeding-habits of Ethmidium and Ethmalosa are unknown 

 to me. 



Ann. d: Mag. N. Hist. Ser. 8. Vol, xix. 20 



