252 THE VOYAGE OF II.M.S. CHALLENGER. 



Family M u r iE x i d je. 

 Group A n g u i 1 1 i n a, Gthr. 

 Congromursena, Kaup. 

 Congromurasna guttulata, n. sp. 



Allied to Congromursena habenata, but -with a comparatively longer tail ; the length 

 of the body being contained once and two-thirds in that of the tail. Eye rather large, 

 two-thirds of the length of the snout. Lips somewhat swollen, a wide muciferous 

 cavity being lodged on the side of the snout ; upper jaw projecting beyond the lower. 

 Anterior nostril at the extremity of the snout, posterior in front of the middle of 

 the eye ; a wide pore on the margin of the upper lip. Cleft of the mouth extending 

 to below the middle of the eye ; teeth very small, somewhat unequal in size, forming 

 extremely narrow bands ; vomer with a few teeth anteriorly. Length of the head 

 two-thirds of that of the trunk. Dorsal fin rather low, beginning immediately behind 

 the root of the pectoral fin. Whitish, with a series of extremely minute black dots 

 above and another below the lateral line. 



A single specimen 7^ inches long was obtained at Station 173, oflF the island of 

 Matuku, Fiji Group, at a depth of 315 fathoms. 



Simenchelys. 

 SimencheIi/8, Goode and Bean, BulL Essex Inst., vol. xi., 1879, p 27. 



One species only is known. 

 Simenchelys parasiticus. 



SimenrJteli/s paradtirus, Goode and Bean, lor. cit. 



„ „ Jordan and Gilbert, Synops. Fish. N. Amcr., p. 363. 



Abundant on the off-shore banks, south of Newfoundland (80 to 200 fathoms) ; 

 individuals have been found burrowing in the flesh of the Halibut. 



Group M u r JB n c s c i u a, Gthr. 



Nettastoma, Rafinesquc. 

 Three species are known. 



