FISHES FROM JAPAN. 



43 



the finlets ; first anal much higher than the second, its height greater 

 than length of head. Pectoral small, situated on the middle of body 

 side, pointed posteriorly ; the length equaling to distance from centre 

 of pupil to posterior end of head. Ventrals apposed to each other 

 before origin of pectoral and scarcely extending to origin of second 

 anal. Caudal slightly emarginate. Scales cycloid, caducous ; no 

 lateral line. 



Colour in formalin dusky ; back very dark ; dorsals, pectorals and 

 caudal dark ; ventrals and anals dusky ; inner lining of operculum 

 black. Air-bladder absent. 



The species stands closer to Bregmaccros atlanticus Good & 

 Bean* than to Bregmaccros macclellandii Thompson as described and 

 figured by Dayf or Günther;];. The species is of a more slender form 

 and has the rays of vertical fins more numerous than in Bregmaceros 

 atlanticus, as judged from the description and figure of this species. I 

 think the specimens before me are to be considered to represent a local 

 form or subspecies rather than to be specifically distinct. 



Four specimens were obtained in Sagami Sea in 1908. The type 

 is registered No. 2015 in the ichthyological collection of the Zoological 

 Museum, Science College. 



Measurements of Begmaceros atlanticus japonicus. 



Specimen 



A. (Type.) 



15. 





6.9 cm. 



6.8 cm. 





1.0 „ 



I.O „ 





0.8 „ 



0.8 „ 





n 1 



0.3 » 



* Good & Bean, Oceanic Ichthyology, 1896, pp. 588- 589, pi. cxv, fig. 351. 



t Day, Fishes of India, 1878, p. 418 pi. xci, fig. 1. 



% Günther, Challenger Report, vol. XXXI, Pelagic Fishes, 1SS9, pp. 25-26, pi. iii, 

 fig. A. 



