THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[FOURTH SERIES.] 

 No. 101. MAY 1S76, 



XXXllI. — AmjjTttpodous Crustaceans. On the Genera Hyale 

 and Anonyx and a new Species of Proboliura. Bj tlie 

 Rev. T. R. R. Stebbing, M.A. 



[Plates XVIir. & XIX.] 



Hyale Nilssoni and Hyale Luhhockiana. 



The late Axel Boeck, in his ^ Crustacea Amphipoda boi-ealia 

 et arctica,' unites under Rathke's genus Hyale tlie Allorckestes 

 of Dana and the Nicea of Nicolet. Among the generic cha- 

 racters, he states that the telson is short, thick, and divided. 

 M.r. Spencc Bate, on the other hand, in his important and 

 useful British-Museum Catalogue of Amphipodous Crustacea, 

 keeps the three genera distinct — describing Allorckestes as 

 having " the telson single," Nicea as having the superior and 

 inferior antenna; subequal, " the rest of the animal generally 

 resembling Allorckestes^ except the telson, which is deeply 

 cleft (or double?)," and finally assigning to HyaU a simple 

 telson, though figuring that of Hyale pontica as cleft or double. 

 At the same time Mr. S]:)ence Bate expresses his own inclina- 

 tion to classify Rathke's //y«^6 near to Nicea of Nicolet, though, 

 as he had not himself seen a specimen of Hyahj he felt bound 

 to adopt Dana's arrangement of the genus in the subfamily 

 Lysianassinfp. In the ' British Sessile-eyed Crustacea,' by 

 Messrs. Bate and Westwood, the genus Allorckestes is stated 

 to have " the telson single;" but there again, by a curious 



Ann. & Mag. N. Hist. Ser. 4. Vol. xvii. 23 



