90 THE VOYAGE OF H.M.S. CHALLENGER. 



characters, by which the Gadidse have been divided. Of the four species known, 

 Lsemonema yarrellii and Lsemonema robustum probably reach to or below the depth of 

 100 fathoms, but this is not sufficiently indicated by their organisation. Lsemonema 

 brasiliense [Lsemonema hrefijile, Gthr.) is a shore fish. 



Lsemonema harhatxdum. 



Lsemonema barhatula, Goode and Bean, Bull. Mus. Comp. Zool., vol. x., 1883, p. 204. 

 B. 7. D. 5 I 63. A. 59. L. lat. 140. L. trans. ^. 



The diameter of the eye is one-third of the length of the head. Length of the head 

 equal to the distance between the root of the ventrals and the anal. 



Habitat. ^Beyeviil specimens were obtained in lat. 32° and 38° N., long. 73° and 

 78° W., by the United States Survey steamers at depths of from 225 to 312 fathoms. 



Haloporphyrus, Gthr. 

 All the species of this genus belong to the deep-sea fauna. 



Haloporphyrus guenthen (PI. XVIII. fig. A). 



Haloporphyrus lepidion, Gtintli., Fish., vol. iv. p. 358. 



,, ,, Johns., Ann. and Mag. Nat. Hist., 1862, vol. x. p. 166. 



„ gilntheri, Giglioli, Nature, 1880, Jan. 1. 



„ „ Vinciguerra, Ann. Mus. Civ. Genoa, vol. xviii. p. 558. 



B. 7. D. 4 I 52-56. A. 49-52. P. 21. V. 6. L. lat. 210. Coec. phy. 15. 



The diameter of the eye is one-sixth of the length of the head (in specimens 

 20 to 24 inches long). Caudal peduncle rather slender, its depth being two-thirds of 

 the distance between dorsal and caudal finsi Fifteen or sixteen longitudinal series of 

 scales between the anterior dorsal fin and the lateral line. The dorsal filament very 

 thin, thread-like. 



Habitat. — This species has been obtained ofi" the coasts of Madeira and Portugal, and 

 also in the Mediterranean. 



The figure of the head is of the natural size and taken from a Madeiran specimen, 

 24 inches long. 



