240 



legs is rather characteristic, as also the shape of the last pair of legs in the 

 female. 



Occurrence. A solitary femal specimen of this form was taken, some 

 years ago, at Bukken, west coast of Norway, from moderate depth. Moreover 

 some few male and female specimens of the same form occurred in a sample 

 kindly sent to me from Mr. Nordgaard, who took it in the Skjserstad Fjord, 

 immediately North of the Polar circle. 



Distribution. Scottish coast (Scott). 



154. Laophonte thoraeiea, Boeck. 



(PI. CLXI). 



Laophonte thoraeiea, Boeck, Oversigt over de ved Norges Kyster iagttagne Copepoder. Chr. Vid. 



Selsk. Forhandl. f. 1864, p. 278. 



Syn: Tetragoniceps longiremis, Brady & Eobertson. 



Specific Characters. Female. Body moderately slender and gradually 

 tapering behind, with all the segments sharply marked off form each other and 

 fringed at the hind edge with small spinules, laterally with delicate cilia. Cephalic 

 segment comparatively large and deep, with the lateral parts abruptly curved in 

 the middle, dorsal face smooth, without any perceptible depression, rostral pro- 

 jection comparatively small and rounded at the tip. Urosome nearly as long as 

 the anterior division, and having the anterior segments slightly expanded later- 

 ally; last segment shorter than the preceding one, and having the anal opercle 

 smooth. Caudal rami rather much produced, being almost twice as long as the 

 anal segment and slightly divergent, apical setae normal. Anterior antennae scarcely 

 as long as the cephalic segment and rather narrow, 6-articulate, the last 2 joints 

 being confluent, 2nd joint the largest and without any process behind. Posterior 

 antennae less robust than in the 3 preceding species, outer ramus small. Posterior 

 maxillipeds slender and elongated, with the hand only slightly dilated. 1st pair 

 of legs far less robust than in the 3 preceding species, basal part rather narrow, 

 outer rarnus scarcely attaining half the length of the 1st joint of the inner, and 

 distinctly 3-articulate. Natatory legs with the rami comparatively narrow, last 

 joint of the outer one in all the pairs with only a single seta inside, proximal 

 joint of inner ramus without any seta. Last pair of legs with the distal joint 

 narrow fusiform in outline, marginal setae 5 in number, that issuing from the 

 narrowly exserted tip very delicate, hair-like; inner expansion of proximal joint 

 quite short, carrying 4 marginal setae, one at the tip and 3 along the inner edge. 

 Ovisac rounded. 





