_214 



and inner expansion of proximal joint extending beyond the middle of the distal 

 joint; those in male, as usual, of smaller si/e. with the inner expansion of prox- 

 imal joint less prominent and only provided with 3 short seta 1 . 



Hotly of whitish colour, with a more or less distinct yellowish tinge. 



Length of adult female 0.76 mm. 



/,'> ,,i 'O /.-. This species is closely allied to the preceding one, and may 

 :1\ In- confounded with it. On a closer comparison, it is however found to be 

 well distinguished, not alone hy its larger si/e and more slender form of body, 

 but also by some well-marked structural differences mentioned in the above dia- 

 gnosis. The form recorded by Th. Scott as Canlhocamptus ln<-<i*(rix. var. r/i,ni/ntii. 

 is unquestionably identical with the present species. 



(><-<-urr< ni-i'. I have found this form rather abundantly in the upper part 

 of the Christ! ani a Fjord close to the beach of shallow bays near the town. Boeck 

 records it also from the west coast of Norway (Karmoen). 



/)i*ti-i/>ti<t. Scottish coast (Scott). 



Gen. 47. Ameira, Borck, 1865. 



'ii- Charttrfcr*. Body, as a rule, rather slender and somewhat com- 

 pressed in its anterior part. Rostral projection very small, almost obsolete. Seg- 

 ments of urosome less coarsely spinulose than in the genus Xitocra : anal opercle 

 perfectly smooth. Caudal rami more generally short and scarcely spinulose. An- 

 ('rior antennae 8-articulate. with the last 2 joints very small and less perfect 1\ 

 defined. Posterior antenna' with the basal part distinctly subdivided, outer ramus 

 narrow, uniarticulate. Mandibular palp more fully developed than in the preced- 

 ing genera, biarticulate, with the basal joint more or less dilated, forming inside 

 a well defined set it'erous expansion. Maxilla- with the exopodal and epipodal lobules 

 not defined, accessory lobe present. Anterior maxillipeds with only a single 

 setiferoiis lobe inside the terminal claw-bearing part. 1st pair of legs distinctly 

 prehensile, but more slender than in the genus Xilm-i-n. inner ramus always much 

 longer than the outer and distinctly .'{-articulate. Natatory legs with both rami 

 well developed, .'{-articulate, the inner one not transformed in the male. Last pair 

 of legs comparatively small, distal joint more or less contracted distally, inner 

 expansion of proximal joint not much produced. 



/' iniii'l^. -This is also one of the genera established by Boeck. the exact 

 definition of which has proved to be rather difficult, on account of the imperfect 



