82 Mr. E, Collctt on a Jiexo Species of Motella. 



length of the head. Lateral line arched over the pectoral fin, 

 the length of which is one third the height and the same as 

 that of the caudal, which is rounded. Left ventral fin in line 

 with the anal, but not continuous. Length of maxillary is 

 contained twice and two thirds in length of head and two thirds 

 that of snout. Orbits separated by a narrow slightly elevated 

 ridge that overhangs the lower orbit. Dorsal fin commences 

 in front of eye, and one half the orbital diameter from snout. 

 Opercular margin entire, except a shallow notch in front of 

 pectoral. Praiopercular limbs join at right angles. Cleft of 

 mouth oblique ; maxillarics extending to the anterior vertical 

 of the upper eye. Every part covered with scales, the diameter 

 of which is one third that of the profile, with the free margins 

 ciliate. Teeth in a single row, on both jaws in equal number, 

 there being six on each side above and below ; none on the 

 vomer. Lower jaw Avith a prominent gonyx. 

 Colour yellowish white above, white beneath. 



DiflTers from P. scaphus, Forst., to which it is closely related, 

 in the number of rays, and in the greater relative size of the 

 bead, and the strikingly large orbits. 



Dredged by H.M.S.-' Challenger' Expedition in 400 fathoms 

 oflf Cape Farewell. 



XIL — On a new Motella from Norway. 

 By Robert Collett. 



Motella septentri'onalis, n. sp. 



2. D. 50-5L A. 41-43. P. 15-16. V. 7. C. 28-30. 



Body rather short ; head large, depressed, contained four 

 times in the total length (including caudal). Snout obtuse, 

 with one barbel at each of the nostrils, and a row of eight 

 shorter or rudimentaiy ones along the upper lip, one at the 

 chin. L^pper jaw considerably longer than the inferior. The 

 maxillary extends far behind the posterior margin of the orbit 

 (the central point of iris is rather nearer the extremity of the 

 snout than the end of the maxillaiy). Teeth cardiform and 

 of unequal size. The eyes are rather small and directed 

 upwards ; the orbit is contained seven times and a half in the 

 length of the head (in younger individuals six times). First 

 dorsal short, its first ray short, only twice as long as the orbit. 

 The vent is situated in the middle between the extremity of 

 the snout and the end of the anal. The lateral line for the 

 most part conspicuous, consisting of about eighteen large pores. 



