Florid ill 111 front (ht Xorlh-easl Atlantic. 



449 



IToad (leprcsso.il, 3i times in len_:^tii (witlioiifc caudal), nearly 

 twice as long as broad, its breadth about equal to its height 

 at isthmus. Hiiout rounded, with numerous mucous glands, 

 about A\ times in head. ^^yC' of moderate size, longer than 

 the flat interorbital space is wide, 6 times in head and less 

 than Ij times in snout. Gajie 2;-) times in head, barely 

 reacliing beyond the level of the iiind margin of orbit; 

 maxilla weak and but litth? expanded distally. Villilbrm 

 teeth in both jaws and in a V-shaped band on vonier. 



Marginal fins continuous, their bases covered with skin 

 and scales; fin-rays difficult to count, probably D. ca. 90, 

 A. ca. 55. Veiitrals each with two closely apposed rays. 



Pteridium AUeui, X 1. 



Body covered with a copious mucous secretion ; scales very 

 small, approximately 105 in a longitudinal and 35 in a 

 transverse series. Lateral line very indistinct and broken. 



Colour, after preservation, umber-brown, darker on top 

 of head and front part of dorsum, paler on belly. Rays of 

 marginal fins dark. 



Lenoth of type 101 mm. (96 mm. without caudal). 



JJab. Mouth of English Ciiannel, near La Ghapelle Bank, 

 ca. 450 fath. 



Tlie chief dimensions of the type are as follows : — Length 

 9G mm. ; length, including caudal fin, 101 mm. ; length to 

 origin of dorsal tin 33 mm., to origin of anal fin 49 mm. ; 

 greatest height of body 23 mm. ; length of head 27*5 mm., 

 of snout 6'5 mm., of eye 4*5 mm. ; interorbital width 4 mm.; 

 height of head at isthmus 15 mm. ; breadth of head 15 mm. ; 

 length of upper jaw 10'5 mm. 



While the general form and proportions of the body are 

 somewhat stouter in P. Alleni than in P. atrum, neither they 

 nor the fin-ray and scale formulas afford a ready means of 

 identifying the species. In P. Alleni, however, the head is 

 slightly larger and markedly more depressed than in P. atranij 



