ART. 10 



NOTES ON MYCTOPHINE FISHES PAKE 



17 



still in a comparatively fresh state of preservation. In modern terms 

 the above quoted description should therefore probably read: Six 

 postero-anals. The three anterior (or lower) Pre situated along the 

 base of lower caudal lobe." With further details as above described. 



The obscure terminology of the original description has caused the 

 species to be recorded as having 6 + 6 AO (Brauer, 1906, i). 167) or 

 6+5 AO (Parr, 1928, p. 84), the actual numbers being 4+6 (?) 

 A6> + 4 Prc^ as above made out. Otherwise correctly defined in the 

 previously rendered key. 



6-7 inf racaudal and 3 supracaudal luminous scales, not elevated on 

 procurrent caudal spines. 



The type specimen shows the following proportions in per cent of 

 the total length without caudal fin (44 mm.). Length of head 30. 

 Diameter of eye 6.8. Length of lower jaw 23. Greatest height 18. 

 Distance from snout to dorsal fin 50. Distance from snout to ventral 

 fins 42. Distance from snout to anal fin 60. 



FiGORB 7. — Lampanyctus microchir Gilbert 



The advanced position of the ventrals relative to the dorsal fin, the 

 low position of the YLO^ the low number of photophores in the 

 antero-anal series and the comparatively few scales are the dis- 

 tinguishing features of the species. 



LAMPANYCTUS MICROCHIR GUbert. 1913 



74468, U.S.N.M. 



Lampanyctus microchir Gilbert, 1913; Parr, 1928. 



Material investigated. Type specimen No. 

 Suruga Bay, Japan. 



A fully adequate and very accurate description of this species has 

 already been rendered by Gilbert, 1913 (p. 101), but no illustration 

 has so far been published. The accompanying diagram has therefore 

 been prepared from the type specimen. 



Correctly defined in the previously rendered key. 



Known only from the type specimen. 



i«The praecaudals being arbitrarily counted as four wtien tliey are confluent with the 

 postero-anals (see Parr, 1928, p. 77). 



64440—29 3 



