A SPECIES OF HEPTRANCHIAS SUPPOSED TO 

 BE NEW. 



BY SAMUEL G ARM AN. 



HEPTRANCHIAS PECTOROSUS. 



Total length 16, snout to caudal 10.375, snout to anal 8.25, snout to 

 dorsal 7.1, snout to vent 6.75, snout to end of pectoral 5, snout to 

 angle of mouth 2, and snout to mouth 0.8 inches. 



Hab., Patagonia. 



^Description. Body elongate, compressed posteriorly, 

 heavy and broad in the anterior third of its length, chest 

 broad. Head broad, short, somewhat depressed, snout 

 and facial angles rounded, blunt. Nostril, anterior, more 

 than half-way from the eye to the end of the snout, in the 

 upper half of the distance between top of head and mouth. 

 Eye moderate, without a nictitating membrane, situated 

 about the middle of the length of the head. Spiracle very 

 small, in front of the upper angle of the first gill opening, 

 half-way to a vertical from the eye. Mouth very large, 

 inferior, with a thin labial fold which extends along the 

 lower jaw nearly half-way to the symphysis. Teeth com- 

 pressed, unlike in the upper and lower jaws, which both 

 have teeth on the symphysis. Roof and floor of mouth 

 with compressed usually five-cusped scales, like shagreen. 

 The tooth between the series of the upper jaws is sharp 

 pointed, 'slightly oblique and resembles those on its left, as 

 it is on that side the small notch appears at its base. On 

 each side of thb tooth there is a series of seven, the me- 

 dial of which bears a small cusp at the forward portion of 



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