no. 2075. FISHES FROM SOUTHERN CALIFORNIA— GILBERT. 371 



visible externally. In paratypes the posterior part of body and the 

 corresponding portions of the vertical fins become dusky. 

 Cotypes were taken at the following stations: 



LYCODAPUS LYCODON, new species. 



Plate 21, fig. 21. 



Type-specimen. — Cat. No. 75822, U.S.N.M., 141 mm. long, from 

 Albatross station 4509, Monterey Bay, depth 152 to 286 fathoms. 



Measurements in hundredths of total length without caudal Jin. 



Length in millimeters to base of caudal 136 



Length of head 16 



Length of snout 5 



Diameter of eye 3 



Interorbital width 5 



Length of maxillary 7. 5 



Greatest width of head 7. 5 



Greatest depth of head 9 



Distance from snout to anal 34. 5 



Distance from snout to dorsal 18. 6 



Length of pectoral 6 



Length of caudal 4 



An elongate form with thick, loose skin, broad head, heavy jaws, 

 very large teeth, and broad, short gill-rakers. In texture of the skin 

 the species resembles L. dermatinus, but differs from it strikingly in 

 proportions and in character of teeth and gill-rakers. It is most 

 closely related to L. mandibularis and L. grossidens, but differs from 

 both in proportions of head and body, in the general appearance, in 

 the texture of the skin, and in the dentition, the palatine series of 

 teeth being stronger than in any other known species. 



The head is short, almost quadrate in cross section, the top of head 

 broad and flat, the sides of head abruptly vertical. The premaxil- 

 lary processes form a projection on snout, the upper profile of head 

 otherwise straight. Nasal tubes short but evident, longer than in 

 allied species. Mouth large, very oblique, the maxillary reaching a 

 vertical line passing through eye just behind its middle. Jaws equal, 

 with extremely broad dentigerous area, the teeth coarse, cardiform, 

 widely spaced, many of them visible when the jaws are closed, and 

 then failing to engage the teeth in the opposite jaw. The inner 

 series of the mandible are somewhat enlarged and are directed back- 

 wards and towards the median line, a pair of the inner teeth near 

 median line in premaxillaries are also a little enlarged. The largest 

 teeth in the jaws are the external series in both upper and lower 



