132 Canon A. M. Norman on British AmphipoJa. 



« 



Genus 4. EUTHEMISTO^ Bovallius. 

 4. Euthemisto compressa (Goes). 



1865. Themisto compressa, Goes, " Crust. Amphip. Maris Spetsbergiaui 

 alluentis, etc.," CEfvers. K. Vet.-Akad. Forh. p. 533, pi. xli. fig. 34. 



1878. Lestrigomis spinidorsaUs, Spence Bate, " Two new Crustacea 

 from the Coast of Aberdeen," Ann. & Mag. Nat. Hist. ser. 5, vol. i. 

 p. 411, fig. 2, and as Hyperia spmidorsalis, id. ibid. vol. ii. p. 489. 



1892. Entheinisto coinpressa, Normfin, "Rare Crustacea on the York- 

 shire Coast," 'The Naturalist,' p. 175. 



1895. Euthejnisto compressa, Sars, (142) p. 12, pi. v. fig. 2. 



Bovallius has joined Euthemisto hispinosa, Boeck, with 

 this species ; but the remarkable spination of the propodos of 

 the third perseopods (see Sars, pi. vi. fig. 2,;;. 5), which 

 is the chief distinguishing character of that species, as indi- 

 cated by Sars, and as I find in Greenland specimens of 

 E. hispinosa, seems to distinguish them. 



Hab. E,edcar, Yorksliire, in extraordinary profusion, thrown 

 up upon the beach, April 4, 1892 (T. H. Nelson) : Mus. Nor. 

 Aberdeen {Spence Bate) ; 70-80 miles E. by N. of mouth of 

 the Humber [T. S.). 



Distrib. Davis Strait and Greenland, ' Valorous,' 1875 ; 

 lat. 52° 33' N., long. 26° 44' W., and lat. 59° 16' N., 

 long. 37° 16' W., ' Valorous,' 1875; Faroe Channel ' Triton,' 

 1882 [Sir J. Murray) : Mus, Nor. Norway and Jan Mayan 

 {O. 0. Sars). 



5. Euthemisto libellula (Mandt). 



1822. (Trtwi???arMs/j6e//M/rt, Mandt, Observationea in Historian! Naturalem 



et Anatomiam Coniparatam in itinere Groelandise factse, p. 32. 

 1838. Themisto crassicornis, Kroyer, Groulands Amfipoder, p. 295, 



pi. iv. fig. 17. 

 1838. Themisto arctica, id. ibid. p. 291, pi. iv. fig. 16. 

 1869. Themisto crassicornis, Bate & Westwood, (1) vol. ii. p. 522. 

 1887. Euthemisto NordeyiskiokU, Bovallius, " Arctic and Antarctic 



Hyperids," * Vega ' Exped. Vetensk. lakttagelser, vol. iv. p. 570, 



pi. xlvii. figs. 104-110. 

 1895. Euthemisto libellula, Sars, (142) p. 13, pi. vi. fig. 1. 



It is the Themisto libellula of Goes and the Euthemisto 

 libellula of Bovallius. 



Hab. Banff [T. Edioard, fide Bate). 



Distrib. Davis Strait and Greenland, 'Valorous,' 1875 ; 

 Jan Mayen, Austro-Hungarian Exped. : Mus. Nor. In shoals 

 on north and east coasts of Finmark (G. 0. Sars); and 

 Arctic region generally from Siberia to Greenland. 



A good specific character by which the species may be at 

 once recognized is that the nail of the third and longest 

 perseopods bears a comb-like set of long spines. 



