FISHERY BULLETIN: VOL. 70. NO. 1 



diameters loelow horizontal septum. Prci and 

 PrC'j level, behind infracaudal g-land; Prc:i at 

 horizontal septum. 



Caudal luminous glands undivided, the infra- 

 caudal larg-er than the sujjracaudal and both 

 covered by scales. Sexual dimorphism is evi- 

 dent in supracaudal gland of adults (specimens 

 about 40 mm and larger) ; in males this gland 

 is about twice as large as in females (Figure 2) . 



Mesopterygoid teeth in narrow oval patches. 

 Narrow band of needlelike teeth on palatine. 

 No vomerine teeth. Both jaws with needlelike 

 teeth which bend medially. A single row of 

 broad-based, anteiiorly hooked teeth occupying 

 posterior two-thirds of media! surface of den- 

 tary. As many as five pairs of similar teeth, 

 most often directed posteriorly, on medial sur- 

 face of dentary near symphysis, and another 

 two to three pairs projecting forward and lat- 

 erally on symphysial area of iiremaxillary; be- 

 low these, on anterior part of premaxillary, sev- 

 eral posteriorly curved teeth (longer than rest 

 of premaxillary teeth) . 



Tann'myichthys minimus is the shallowest 

 dwelling, most firm-bodied, and smallest of the 

 three sj^ecies, the largest examined specimen 

 measuring 65 mm. 



Gravid females (about 40 mm and larger) 

 were captured in August-September. 



Horizontal distribution — T. minimus occurs 

 circumglo))ally between about lat 35° N and 30° S 

 (Figure 5). It has been taken less frequently 

 than T. bathyphilus. 



Vertical distribution — Closing-net data from 

 the Project "Ocean Acre" in the north Atlantic 



Ocean suggest vertical stratification of juveniles 

 and adults. Juveniles appear to inhabit depths 

 of 140 to 250 m, the smallest specimen (21 mm) 

 having been captured at 140 m. Adults occur 

 ]-»redominantly in depths between 450 and 500 m. 

 T. minimus does not appear to perform daily 

 vertical migrations. 



Taanhigichthys bathyphilus (Taning, 1928) 

 Figure 3 



Lampadena bafhyphila Taning, 192S: 63; Parr, 



1928: 151, Figure 36. 

 Lampadena (Lampadena) bathyphila Fraser- 



Brunner, 1949: 1078, Figure. 

 Taaningichthys bathyphilus Bolin, 1959: 26, 



Figure 6. 

 D 12-13 (11-14); A 13 (12-14); P 12-14; 

 V 8; gill rakers 3 + 1+7-8 (5-9), total 11-12 

 (9-13); VO 4 (3-5); AO 3 (1-4) +1(2), total 

 4(2-5); Pre 2 + 1; vertebrae 34-36; procurrent 

 caudal rays 7 + 6. 



Mouth terminal, moderately large, JL about 

 1.5 in Pre P; maxillary slightly expanded poster- 

 iorly. Eye large, ED about 2.5 in Pre P. Pterotic 

 spine inconsi)icuous. Opercular margin as in 

 T. mininuis. Pectoral rays reaching VOi; base 

 of pectoral fin nearer to horizontal septum than 

 to ventral margin of body. Pre V 2.1-2.5 in SL. 

 Pre D 1.9-2.2 in SL; end of base of dorsal fin 

 on, or slightly in advance of, vertical through 

 SAO. Pre A 1.5-1.7 in SL. Base of adipose fin 

 above end of base of anal fin; Pre Ad 1.2-1.4 

 in SL. 



V -O-jU^-a--** ' 



Fic.rRK ^.—Tamiingiehthys bathyphili(S (Taning) ; 02 mm, RV Velcro stn. 11733, LACM 30034-1. 



70 



