28 



mvxelf in a single place near t Miri-tiania. It occurred here rather plentifully in 

 ., ,|,.ptli of about in fathoms, on a muddy bottom covered with decaying alga\ 

 On re\isitmg this place. 1 tound the bottom quite altered and almost devoid of 

 animal life: nor did 1 succeed in finding this f,,nu in any neighbouring place. A 

 xiii-1,- female specimen taken recently at liisor. south coast of Norway, has how- 

 i enabled me to subject the species to a renewed examination. Out of Nor- 

 wav this form has not been recorded. 



Gen. 59. OrthOpSyllUS, Hr;nly. 1S73. 



Syn: l/iUj'-l'iiri/i'i. Cl.-nis dn-1 Sp. Bate). 



leric Characters. Body elongated, sub-cyliiulric in form, and almost 

 ,ight. with tin- segments sharply marked off from each other and coarsely denti- 

 ,-uhited behind. Rostral projection very prominent. Caudal rami comparatively 

 short and thick. Anterior antennae with the number of joints much reduced, ter- 

 minal part (in female) consisting of only a single joint; those of male strongly 

 hinged. r<terior antenna- with the outer ramus distinctly detined and resembling 

 in structure that in 7^oy///o;//c. Mandibles well developed, with the palp imper- 

 1\ biarticulate. Maxilla- and maxillipeds of normal structure. 1st pair of legs 

 ispi.-iiunxly fnmi the succeeding pairs, both rami having the apical 

 remarkably dilated in their proximal part, inner ramus exceeding in 

 the outer, and Inarticulate. The '> succeeding pairs of legs comparatively 



-hort. \\itl iatatur\ seta- on the outer ramus, inner ramus small, biarticulate. 



that of .'5rd paii- cun^.iciiMi^lv transformed in the male. Last pair of legs with 

 both joints produced in lamellar x.'tilerous lappets. Ovisac single. 



Remarks. Thi< -'-mis \\.-i- r>tablished as early as the year 1S>O by ( Mails, 

 to include a s|,i-cir> found by him in the Mediterranean, at Nice. As ho\ve\er 

 the generic name /.////.// ,-<I'KI proposed by that author had been previously given 

 by ^p. I'.at'- to ;ni Amphipod. Prof. P>rady substituted for it in the year IN.".'! 

 that of (h //c/y-^//////>. He siibseipieiitly withdrew this name, believing that (Man-- 

 :abh- to the L'einis CletodeS est a hi isht-d by him ill the preceding year. 

 I think however that the L'<-niix Orthopsyllus ou^ht to be retained for (Mails's 

 species, b.-i aiisr this form differ^ \cr\ m.-iterially in several characters both from 

 the -|, of < '!< ' nd from those of the other genera included in the present 



lamih. \\ e do not at present know more than a single species, to be described below. 



