130 Canon A.M. Norman on British Amphipoda. 



impossible to say. Tliey compare it to Hyperia gaJha ; but 

 tlie following sentence in the description of this small form, 

 " lather more than three-twentieths of an inch long/' found 

 by Edward at Banf!', is very puzzling : — " Dactyli of three 

 posterior pairs of pereiopoda long, sharp, and furnished with 

 a hunch of cilia in the middle. ^^ 



Genus 2. Hyperoche, Bovallius. 

 \^'^n.=Metoecu$, Kiuj-er (in uso)= Tauria, Boeck (not Dan.a).] 

 2. Hyperoche tauriformis (Bate «fe West wood). 



1838. Metoecus medu^arum, Kroyer, Gronlands Amfipoder, p. 288, 



pi. iii. fig. 15. 

 IBbiJ. Metoecus viedusarum, Norniau, " Last Report Dredging Shetland 



Isles," Brit. Assoc. Rep. for 1808, p. 287. 

 18(>9. Hyperia tauriformis, Bate & Westwood, (1) vol. ii. p. 519. 

 1872. Tauria medusarum and Tauria abyssorum'\, Boeck, (138) pp. 82 



& 83, pi. i. fig. 2. 



1889. Hyperoche Kroyeri, Bovallius, /. c. p. 87; Hyperoche ahyssorum, 

 p. 94; Hyperoche Liitkeni, p. 97, pi. vii. figs. 1-26; aud Hyperoche 

 tauriformis, p. 115. 



1890. Hyperoche Kroyeri, G. O. Sars, (142) p. 9, pi. iv. 



Hal). Banff (T. Edward) ; Shetland {A. M. N.) : Mus. 

 Nor. Firth of Forth ; Firth of Clyde ; Loch Fyne ( T. 

 Scoti) ; near Puffin Island, N. Wales {A. 0. W.). 



Distrih. Faroe Channel, ' Triton ' Exped. [Sir J. Murray) ; 

 Greenland, and lat. 52° 53' N., long. 23° 44' W., surface, in 

 great abundance, * Valorous' 1870: Mus. Nor. The species 

 has an arctic range from Siberia to Greenland. 



2*. Hyperoche prehensilis (Bate & Westwood). 



1869. Hyperia prehetisilis. Bate & Westwood, (1) vol. ii. p. 540. 

 1885. Hyperoche prehensilis, Bovallius, Sj'stem. List of Ampliip. 

 Hypeiiid. (K. Svenska Vet.-Akad. Ilandl. vol. ii.), p. 19 (sep. copy). 

 1889' Hyperoche prehemilis, Bovallius, Coutrib. &c. p. 93. 



The only known example " was taken at Banff by Mr. T. 

 Edward.^' The characteristic feature is the subchelate 

 character of the posterior pairs of perjeopods ; but this 

 character Bovallius thinks may be a feature depending only 

 on the young stage of the animal. Indeed Fr. Muller has 

 described just such a difference in the posterior perpeopods 

 in his Hyj^eroche Martinesii, in which species these legs are 

 prehensile in the young (as in JH. jyrehensilis) and simple in 

 the adult (as in II tauriformis) . It would appear therefore 

 that the former will probably be proved to be the young stage 



+ First described by Boeck in 1870. 



* I repeat the previous number here with an asterisk, because I regard 

 H. prehensilis as not a satisfactorily established British specie.? ; and 

 similarly repeated numbers must be interpreted in the same way through- 

 out these papers. 



