147 



preceding joint, carrying 2 ciliated setae; terminal joint small, with 2 remark- 

 ably incurved setae accompanied by a number of thin bristles. Natatory legs 

 with the inner ramus considerably longer than the outer. Last pair of legs 

 with the proximal joint well defined and carrying outside the usual bristle; 

 distal joint broadly ovate, or almost spatulate in form, and densely ciliated on 

 both edges, marginal spines rather strong and attached to distinct ledges; apical 

 bristle thin and slender. Ovisacs of moderate size, narrow fusiform in shape, 

 and considerably divergent. 



Body of a clear whitish hue, with the ovarial tubes and the ovisacs 

 bright red. 



Length of adult female 1.15 mm. 



Remarks. This form, as above mentioned, was briefly characterised 

 by Boeck as early as the year 1873, and is the type of the present genus. I 

 have little doubt that the Lichornolgiis littoralis of Scott, originally described 

 from a solitary male specimen, is the very same species, and this is indeed 

 still more confirmed by the figure subsequently given by the same author of 

 an adult female specimen. It is an easily recognisable form, and in the living 

 state highly distinguished by the bright red colour of the ovarial tubes and 

 the ovisacs, a character which has given rise to the specific name proposed 

 by Boeck. 



Occurrence. Only very few specimens of this pretty form have hitherto 

 come under my notice, all of the female sex. One of these specimens, that 

 from which Boeck's description was made, was taken many years ago in the 

 upper part of the Christiania Fjord from a depth of about 20 fathoms; the other 

 specimens were procured in the middle part of the Fjord, at Moss, and in 

 about the same depth. 



Distribution. Scottish coast (Scott). 



Gen. 37. HippOmolgUS, G. O. Sars, n. 



Generic Characters. Body less pronouncedly cyclopoid in shape, the 

 anterior division being only slightly dilated and not very sharply marked off 

 from the posterior. Caudal rami much produced. Anterior antennae short and 

 robust, 6-articulate. Posterior antennae comparatively feeble in structure. Max- 

 illae armed in a much similar manner to those in Hetnicyclops, palp however 

 of somewhat simpler structure, with the sub-apical lobule very small and pro- 



