36 



(Irci/ri'iiicr. — Tht' only s])rriiiK'ii met witli. an adult nvigenius fciiiale, 

 was t'dund iiian\- years a,,i;'i) by tlie autlmr at Bukkeii nn tlie west coast of 

 Norway, tlip ilcptli not recorded. 



(Jen. 4. Opisa, P.oeck, 1S7G. 

 S}'U : (Jjiix, Kviiycv. 



Body rather robust, witli liroadly rounded back and very large and 

 deej) coxal plates. Antenna^ in female very slioi't, tlie inferior ones of male, 

 however, greatly elongated and furnislied at the anterior edge of the flagellnni 

 with a regular series of «calceol£e«. Epistonie not very projecting and defined 

 from the anterior lip by a slight sinus. Mandibles of the usual structure, 

 palp originating nearer to the base than does the molar expansion, rather 

 slender, 2nd joint densely setiferons on the inner edge. Maxilla^ about as in 

 Normania. Maxillipeds with the palp normal l)nt comparatively .short, only 

 slightly reaching beyond the masticatoi'\- lolies; the latter rather large, oblong, 

 angular at the tip, inner edge denticulated. Anterior gnathopoda prehensile, 

 terminating with a very large forcipated hand,' the inferior angle of the pro- 

 podos being produced to an nnguiform process, against which the greatly 

 curved dactyl us admits of being impinged. Posterior gnathoijoda of the usual 

 slender form, in'opndal joint (jval, truncated at the tip. Pereiopoda not very 

 elongated, basal joint of the 3 posterior pairs greath' dilated. Branchial 

 lamella^ normal. Last jtair of uropoda reaching beyond the preceding pair, 

 rami densely setons at the inner edge. Telson very elongated and deeply cleft. 



liemarJcfi. — The generic name Oj;/.* proposed by Kniyer having lieen 

 em])loyed in Zoology at an earlier date, Boeck has seen fit to make the aliove 

 slight change by adding the feminine termination. The genus is chiefiy 

 distinguished Ijy the peculiar forcipate character of the anterior gnathopoda. 

 It onl\' comprises as yet a single species; for the several forms referred by 

 otliei- authors to this genus have tui'ued out to be in fact generically ilistinct. 



4. Opisa Eshcrichti, (Kiiiyer). 



(I'l. i-j, lig. 1). 



Opis Ksclirirhti, Krciyev, Natnrli. Tidsskr. 1 scr. \'. A, ]>. 149. 

 Syn: <)ph fi/pira, Kriiyor. 



Body glabrous, ratliei- thick, with evenly vaulted liark. Cejihahm 

 rather short, with the lateral corners somewhat projecting and narrowly 

 rounded. First pair of coxal plates much smaller than the 2nd and partly. 



