2-2 I 



raini -Imrt. Anterior antenna- S-articulate. with tin 1 tirst ~2 articulations much 

 tin- largest. Posterior antenna' with th<- basal part distinctly subdivided, outer 

 ramus Inarticulate, last joint small, but well defined. Mandiluilar palp distinctly 

 hiranioiis. with both rami uniarticulate and of equal si/.e. Maxilla 1 with the exo- 

 podal and epipudal lobe- \\ell defined. Anterior maxillipeds with '2 digitiform 

 lobe, in-id. tin- claw-hearing joint. 1st pair of legs rather strongly built and 

 distinctly prehensile, inner ramus. as usual, longer than the outer and .">-articulat'. 

 with the last 2 joints comparatively short and bent upon the 1st. Natatory legs 

 well developed, resembling in structure those in the genus Parameirq, inner ramus 

 of' :>rd pair of legs not transformed in male. Last pair of legs with the distal 

 joint more or less produced, tapering towards the end: inner expansion of proxi- 

 mal joint of moderate size, triangular in form. 



Remarks. This new genus also bears a close relation to Amdrn. as indi- 

 cated by the name here proposed. It is however prominently distinguished by 

 the much fuller development of the oral pails, and more particularly by the 

 distinctly biramous mamlibular palp. In the structure of the posterior antenna' 

 ami leu's also some well-marked differences are found to exist. The form recorded 

 by Pirady in bis Monograph as Atnnra l(n/<i//>i'S Boeck, according to the structure 

 of the mandibles, undoubtedly belongs to the present genus, and this is also the 

 3e with some of the new species of An/rim described by Th. Scott. In the 

 following pages 3 Norwegian species will be described. 



144. Ameiropsis brevicornis, G. 0. Sars, n. sp. 



(PI. CXLVIII). 



''. Syii: Anii'irn /uni/i/irs, IJnnly (ii"t Boeck). 



Characters. I^-nmlc. liody comparatively robust, with the anterior 

 ili\isiun somi-what tumefied in front. Cephalic segment of modeiate si/e and 

 idy roiindi-d in front, rostral projection very small. I'rosome much shorter 

 than the ;int<-i-ior di\ision. la-t segment about the si/e of the preceding one, anal 

 operele v.Ty small. Caudal raini scarcely as Ion- as they are broad, and some- 

 what obliquely truncated ,-it thr tip. apical seta' of moderate length. Kye imper- 

 f'-ctlv de\i'loped. Anti-rior antenna' rather short and stout, scarceh exc.'ediim 

 half tin- leii'_'th of the cephalic segment, proximal part about twice ilie length of 

 the terminal one. (Inter ramus of posterior antenna- with the proximal joint 

 smooth J!isj,| ( . and <_ r radnally widening somewhat towards the end. last joint Iran-- 

 \erse|y truncated at the end. with the ~2 apical seta' somewhat unequal in length. 



