115 



Gen. 27. NeOpOntlUS, Scott, 1898. 



Generic Characters. Anterior division of body only slightly dilated, with 

 some of the segments angularly produced laterally. Cephalic segment of moderate 

 size and narrowed in front; rostral projection well marked. Tail very slender, 

 with the genital segment in female long and narrow. Caudal rami rather pro- 

 duced and somewhat lamellar; apical setae comparatively short. Anterior antennae 

 of moderate size and densely clothed with slender, curved setse; those in male 

 imperfectly hinged and without any supplementary aesthetasks. Posterior antennae 

 rather stout, with the 2 middle joints imperfectly defined in female, terminal joint 

 not much produced. Oral cone comparatively short, not being produced into a 

 siphonal tube. Mandibles less slender than in Myzopontius, and distinctly denti- 

 culated at the tip. Maxillae with the inner lobe larger than the outer, and car- 

 rying at the tip 4 setae. Maxillipeds comparatively strongly built, dactylus of 

 the anterior ones armed inside, at some distance from the end, with a very con- 

 spicuous curved secondary spine. Natatory legs of a similar structure to that 

 in Myzopontius. Last pair of legs, however, more fully developed, with the 

 distal joint rather produced and somewhat spatulate in form. 



Remarks This is a very distinct genus, exhibiting, as it does, several 

 well-marked differences from Myzopontius. Yet its affinity to that genus is 

 evidently closer than to any other of the siphonostomous Cyclopoida, and this 

 has also been recognised both by Scott and Giesbrecht. 



65. Neopontius angularis, Scott. 



(PI LXIX). 



Neopontius angularis, Scott, Sixteenth Annual Report of the Fishery Board for Scotland, 

 Part III, p. 271, PI. XIV, figs. 1 11. 



Specific Characters. Female. Body very slender, with the anterior 

 division oblong oval in outline and somewhat abruptly truncated behind. Cephalic 

 segment scarcely occupying more than YS of the total length and narrowly rounded 

 in front; rostral projection well marked, but incurved, and acute at the tip. The 

 succeeding trunk-segments rather dissimilar both in size and form, the anterior one 

 being comparatively simple, whereas the 3rd segment is unusually broad, with 

 the epimeral parts prominent and triangularly pointed behind; penultimate seg- 

 ment much smaller, with the epimeral parts angularly rounded; last segment 

 very narrow. Tail almost attaining the length of the anterior division and rather 

 narrow; genital segment longer than the 3 succeeding segments combined, and 



