Supracaudal luminous glands with 2 or 3 scales; infracaudal gland with 3 or 4, the latter 

 extending to below (usually slightly beyond) the last, and occasionally to next to last AOp. 

 Patterns of luminous organs of the head in eastern Pacific forms (Fig. 190) are quite similar to 

 those shown by Nafpaktitis and Nafpaktitis (1969, p. 61, fig. 73A) for Indian Ocean specimens. 



Fig. 190 — Luminous gland on heads of Boltmchthys photothorax: (A) male, 48.0 mm, (B) 

 female, 52.0 mm; and of S. longipes: (C ) male, 34.0 mm, (D ) female, 33.0 mm. 



Body proportions are given in Table 41 and are compared with similar data for B. sup- 

 ralateralis and B. longipes. 

 Size: To 68 mm. 

 Depth of capture and distribution will be discussed under B. longipes. 



203 



