330 Canon A. M. Norman on 



separable from the cephalon, are here firmly connected to and 

 form a portion of it. The divergence of structure is so 

 remarkable that it appears to me tliat A. acutifrons and 

 A. hastifrons ought to be generically separated from their 

 allies ; and I would propose for them the name Apseudopsis. 

 The synonymy will be : — 



(1) Apseudopsis acutifrons (G. 0. Sars). 



1880. Apscudes acutifrons, G. 0. Sars, (101) p. 15. 



1886. Apseudes acutifrons, G. 0. Sars, (103) p. 295, pi. vi. 



(2) Apseudopsis hastifrons (Norman & Stebbing). 



1884. Apseudes Latreillii, Claus, (16) p. 316, pis. i., ii. 



1886. Apseudes hastifrons, Norman & Stebbing, (86) p. 133. 



1886. Apseudes Clausi, Boas, (15) p. 109. 



1887. Apseudes Latreillii, Claus, (17) p. 139, pis. i.-vii. 



3. Apseudes hibemicus, Walker. 



1897. Apseiides hibernicus, A. O. Walker, (133) p. 228, pi. xvii. figs. 2- 

 2d, pi. xviii. figs. 2e & 2/, and (134) p. 164 (name only). 



Through the kindness of Dr. Scharff I have had an oppor- 

 tunity of examining two specimens of this species which are 

 preserved in the Natural History Museum of Dublin and are 

 referred to and identified with the species by Mr. Walker. 

 These Apseudes appear to me to approach nearest to A, tenui- 

 manus, G. O. Sars (103, pi. iii.), but the antennal filaments 

 are more numerously jointed, the sides of the segments of 

 the person are without the lateral and posterior projections, 

 and the telsou is shorter. 



Ilab. Between tide-marks on Church Island, Valentia, 

 Ireland, where it was taken by Mr. F. W. Gamble. 



4. Apseudes spinosus (M. Sars). 



1864. Apseudes talpa, Lilljeborg, (61) p. 9. 



1858. Rho'ea spinosa, M. Sars, " Oversigtover de i den Norske-arktiske 



Eegion forekommende Krebsdyr," Christ. Vid. Selsk. Forhand. 



1868, p. 30. 

 18G9. Apseiides talpa, G. O. Sars, (96) p. 45. 

 1877. Apseudes talpa, Meinert, (70) vol. xi. p. 85 (fide INleinert, (71) 



p. 125). 

 1880. Apseudes spinosus, G. 0. Sars, (101) p. 11. 

 1886. Apseudes spinostis, Norman & Stebbing, (103) p. 85, pi. xvii. 



fig. 1. 

 1896. Apseudes sptnosus, G. 0. Sars, (105) p. 7, pis. i. & ii. 

 1896. Apseudes Kcehleri, Bonnier, (8) p. 562, pi. xxxi. figs. 1 a-n. 



Hal. 'Porcupine' Expedition, 1869, oflf S.S.W. Ireland, 

 725 fath. (Stat. 36, lat. 48° 50' N., long. 11° 9' W.). 



