MAUROLICUS LUCETIUS. 243 
down and backward in the hinder four fifths of their length; outside of the 
middle portions of the lower jaws, extending backward of the orbit one third 
of the length of the eye. Teeth small, unequal, a series along the entire 
lower edge of the maxillary, a short series of four or more on each 
palatine. Nostrils small, nearer to the eye than to the end of the snout. 
Opercles broad, extended backward above the bases of the pectorals. Gill 
Openings very wide; membranes not united, free from the isthmus. 
Dorsal origin midway from the snout to the base of the caudal. Anal 
origin below the eighth ray of the dorsal. Adipose fin above the hinder end 
of the base of the anal. Ventrals about midway from the nostrils to the 
base of the tail. Caudal long, nearly as long as the head, deeply forked. 
The light organs are directed downward ; in appearance they are globular 
bodies the lower side of each of which is a round silvery facet and the bal- 
ance black. The total number of light organs on the two sides of the head 
and the body is one hundred and sixty. Two of these organs occur on each 
side of the head at the upper edge of the maxillary, one below the space 
between the nostrils and the eye, the other below the back portion of the 
orbit ; two more appear at the lower edges of the opercles, in continuation of 
the humeral series on the body; eight are situated at the bases of the 
branchiostegal rays; eight are found on each side of the isthmus; each 
humeral series, from above the pectoral to a point above the first ray of the 
anal, contains eleven forward of the ventrals and as many more backward of 
them; in each ventral series there are fourteen from the isthmus to the 
ventrals, ten from the ventrals to the anal, and fourteen at the side of 
the anal to the base of the caudal. As in Chauliodus and Gonostoma the 
humeral series ends at the anal fin. 
Two inches in the entire length. 
Back blackish; top of the snout and fins lighter, the latter puncticulate ; 
flanks and sides of the head silvery; belly silvery between the light facets ; 
a transverse streak of puncticulations on the bases of the caudal rays. 
A smaller specimen has a black spot on each side of the chin near the 
angle of the mouth, and very little of the darker puncticulations on back or 
base of tail. A third individual possesses a small black spot on the pre- 
opercle directly back of the middle of the eye. 
Station. Latitude. Longitude. Depth. Temperature. Bottom. 
3428 21° 36’ 30” N. 106° 25’ W. 238 fathoms 48.1° F. Dk. gy. S. glob. 
3367 5° 31’ 30” N. 86° .52/ 307 WwW. 100! ENON is Rky. 
2627 (Hyd.) 0° 36’ N. 82° 45! W. 1832“ 36° F. Gy. glob. Oz. 
