202 



epithelium having large prominent vesicular nuclei ; they have broadish mouths, 

 and in their deepest third they end by subdividing into two or three long sinuous 

 branches, which lie in a plane parallel to that of the rest of the gland. 



Promyllantor, Alcock. 



Promyllantor, Alcock, Ann. Mag. Nat. Hist., Oct. 1890, p. 310. 



Closely related to Congromurxna. 



Body stout, with the muscular and osseous systems well developed. Tail 

 about as long as the trunk. Muciferous cavities of the head well developed. 

 Eye rather small. Cleft of the mouth narrow, not extending behind the middle 

 of the eye. Villiform teeth in broad bands in the jaws and in a broad confluent 

 patch on the palate. Tongue free. Nostrils lateral. Gill-openings widely 

 separate ; four gills with wide clefts. No scales. Pectoral and vertical fins well 

 developed, the latter confluent. The dorsal begins some distance behind the occiput. 



163. Promyllantor purpureas, Alcock. 



Promyllantor purpureas, Alcock, Ann. Mag. Nat. Hist., Oct. 1890, p. 310: Illustrations of the Zoologt 

 of the Investigator, Pishes, pl. VI., fig. 2. 



The head is about a sixth, the tail is about half-a-head-length more than 

 half the total length ; the body is massive, its greatest height equals the length 

 of the post-orbital portion of the head. 



Head with its muciferous cavities highly developed, low, broad, inflated, 

 ending in a broad, pointed, swollen snout, which is twice the length of the 



eye or - the total length of the head, and conspicuously prominent beyond the 



mouth. Eyes circular, set high up on the side of the head, deep beneath a small 

 transparent area of skin, a diameter and a half apart. 



Anterior nostril a short wide tube situated inferiorly at the tip of the snout. 

 Posterior nostril a large circular foramen just above the anterior orbital angle. 



Mouth-cleft reaching slightly behind the vertical through the anterior 

 border of the orbit ; the jaws completely hidden by the very thick inflated lips. 

 Villiform teeth in broad bands in the jaws, and in a broad, confluent, triangular 

 patch covering the palate. Tongue free. 



Gill-openings small widely separated foramina, hardly larger than the eye ; 

 four gills with narrow lamina? and coarse lamellae and wide clefts ; no gill-rakers. 



Integument thick, coriaceous, scaleless, investing the vertical fins and 

 completely concealing their rays. The lateral line traverses the middle of the 

 body. 



Vertical fins confluent ; the dorsal begins a distance behind the occiput 

 equal to the length of the post-rostral portion of the head, or just behind the 



