more powerfully developed. In the form of the ventral protuberance of the genital 

 segment, it somewhat resembles T. flavidus; but the anterior projection is more 

 obtuse, and the posterior scarcely unguiform at all. 



Occurrence. Only a single female specimen of this form has hitherto 

 come under my notice. It was taken in the same place in which T. Imgimanus 

 occurred. 



45. Tegastes nanus, G-. 0. Sars, n. sp. 



(PI. XLH, fig. 4). 



Specific Characters. Female. Cephalic segment, as in the 2 preceding 

 species, with a distinct chitinous stripe across the back, postero-lateral corners 

 much produced, acuminate. Ventral protuberance of genital segment terminating 

 in 2 blunt projections, the posterior one recurved. Distal part of urosome only 

 slightly prominent. Posterior maxillipeds of moderate size, hand narrow oblong 

 in form, with the palm not defined. Last pair of legs resembling in structure 

 those in T. grandimanus. Spermatophore-reservoir of male rather thick, with the 

 beak short, recurved. 



Colour yellow, variegated with chestnut-brown. 



Length of adult female 0.31 mm. 



Remarks. This is the smallest of the Norwegian species, and moreover 

 easily recognizable, when alive, by the light brown colour of the body. 



Occurrence. In addition to the 2 above-mentioned localities of the west 

 coast of Norway, I have found this form occasionally at Aalesund and Christian- 

 sund in moderate depths. 



Gen. 19. ParategasteS, O. 0. Sars, n. 



Syn: Amymone, Claus (part). 



Generic Characters. General form of body resembling that in Tegastes, 

 the genital segment being expanded below in a similar manner, and the distal 

 part of the urosome much shortened. Anterior antennae composed of only 6 or 

 7 articulations. Posterior antennae with the outer ramus uniarticulate. Anterior 

 maxillipeds with the 2 proximal lateral lobes replaced by simple setse, outermost 

 lobe less broad than in Tegastes, and provided with only 2 setse at the tip, ter- 



