258 bulletin: museum of comparative zoology. 



Diaphus garmani, sp. nov. 



Plate 3. 



Type. — Coll. Museum of Comparative Zoology, No. 6873, Cuba, Dr. Felipe 

 Poey. 



Most nearly related to D. splendidus Brauer (Zool. Anz., 1904, 28, 

 pp. 392 and 399, fig. 7), differing in the greater depth, the more higlily 

 arched head and snout, and in the entirely separate antorbital photo- 

 phores, the upper a minute round dot above the nostrils, the lower 

 oblong or ovate. The supraventrals are also lower, scarcely nearer the 

 lateral line than the ventral fins. 



Measurements in hundredths of total length to base of caudal : Length of 

 head, 27; diameter of eye, 7.5 ; length of snout, 5; greatest depth of head, 22; 

 length of maxillary, 20 ; depth at front of dorsal, 24 ; least depth of caudnl 

 peduncle, 10 ; distance from snout to front of dorsal, 42; to ventrals, 43; 

 to front of anal, 62 ; to adipose fin, 81. Length of type 51 mm. 



Dorsal with 14 rays, including all rudiments, the last ray forked to the base; 

 anal, 15; pectoral, 12 ; ventral with 8 developed rays and an outer slender 

 rudiment. Lateral line, 34. 



Head high and compressed, the upper profile forming a high even curve 

 from snout to occiput. Eye small, the orljit low, the interorbital area arching 

 high above the orl)it when the head is seen in profile. Cheeks produced 

 backwards, the margin of preopercle oblique, the maxillary reaching its 

 angle. 



Vomer toothless; palatines and pterygoids with broad bands of minute 

 teeth which cover the greater part of the roof of the mouth ; similar teeth on 

 the tongue and basibranchials. Gill-rakers slender, 7 + 1 + 14 on the outer 

 arch. 



Origin of dorsal over or slightly in advance of the ventrals; origin of anal 

 under last dorsal ray ; adipose dorsal inserted over last ana) ray. 



Scales of lateral line a little enlarged ; three series of scales between lateral 

 line and base of dorsal fin. 



General color dark brown, or blackish, with bright reflections from the 

 scales. Basal portions of vertical fins finely speckled with black. 



Photophores. — A minute dorsal antorbital under the anterior edge of the 

 supraorbital rim ; a larger ventral antorbital is wholly detached from it and 

 extends but little below the anterior part of the orbit. 



Suprapectoral above opercular angle, slightly nearer lateral line than base 

 of pectoral, without attached luminous gland. Upper infrapectoral in front 

 of lower pectoral rays; lower infrapectoral halfway between upper and first 

 thoracic. 



Thoracics, 5, the fourth elevated, a little behind the vertical from the third, 

 the fifth in front of outer ventral rays. First thoracic interspace longest, the 

 second and fourth about equal. 



