Mr. E. J. Miers OM Arctic Crustacea. 65 



Coll. Feilden : Discovery Bay (on Hippolyte polaris). 



A male and female example of this curious Bopyrid Crustacean 

 occurred in the collection, parasitic upon a specimen of Bippolyte 

 poJaris, and occupying the position in which it is usually found, i. e. 

 a cavity beneath the carapace, at the angle fonned by the junction 

 of the posterior and lateral margins (vide Buchholz, ' Zweite deutsche 

 Nordpolarfahrt,' Crust, p. 286). This cavity was nearly filled with 

 the minute yellowish ova of the parasite. The animal agrees in all 

 respects with the excellent figure given by Kroyer (Voy. en Scandi- 

 nayie, pi. xxviii. fig. 2), except that in the minute male I have ex- 

 amined the body is more closely articulated, and the sutures de- 

 fining the first two postabdominal segments are distinctly visible 

 under the microscope. The length of the female is nearly 5 lines 

 (10 millims.), that of the male about 1 line (2 millims.). 



The Gifffe^ hippohjtes occurs, if we may judge from the few re- 

 corded localities, over a very extended geographical area ; its exist- 

 ence has probably been unnoticed in many instances by the earlier 

 observers. It occurs on the coasts of Greenland and Spitzbergen 

 (on Hip>p)olyte polaris), Norway (on U. /SoM^erJoe?), and the British 

 coasts, at Galway (on H. variam) and Cornwall. 



Phryxus ahdominalis. 



Bopyrus abdommalts, Kroyer, Nat. Tidsskr. iii. pp. 102, 289, pis. i., ii. 



(1840) ; Voy. en Scand. Crust. Atlas, pi. xxix. fig. 1. 

 Phryxus hippolytes, Eathke, Nova Acta Nat. Curios, xx. p. 40, pi ii 



figs. 1-10 (1843). ^ ' ^ 



Phryxus abdominalis, S. Bate and Westwood, Hist. Brit. Sessile-eyed 



Crust, ii. p. 234 (18G8) ; Buchholz, Crust, in Koldewey, Zweite 



deutsche Nordpolarfahrt, p. 287 (1874). 



Coll. Feilden : Discovery Bay, male and female, on Hippolyte 

 polaris ; Cape Napoleon, male and female, on H. polaris. 



Coll. Hart : Franklin- Pierce Bay, 13-15 fathoms, five males and 

 five females. 



The females in the collection were found in the usual position 

 beneath the second and third postabdominal segments of the Hip)- 

 pohjte, and the minute male was in each instance detected upon the 

 body of the female. 



It occurs frequently on the coasts of Norway and Finmark (on 

 several species of Hippolyte and Pandalus anmdicornis), Greenland 

 (on B. turgida), Spitzbergen, and the northern, eastern, and south- 

 ern coasts of Britain (on Hippolyte pusiola, H. Barleei, and Pandalus 

 annnhcornis). Its range is evidently quite as extended as that of 

 the foregoing species. 



Munnopsis typica. 

 Munnopsis typica, Sars, Forhandl. Vidensk.-Selsk. Christiania, p. 84 

 (1861) ; .Bidrag til kundskab om Christiania-Fiordens Fauna, p. 70, 

 pis. vi., vii. (1868). ' i' ' 



Coll. Feilden : Cape Napoleon, two male specimens at a depth 

 of 25 fathoms, temperature of the water 29°-2 ; at 50 fathoms 

 one male specimen. 



Ann. d- Mag. X. flisf. Ser. i. Vol xx. o 



