137 
base and are fastened, as figured, repectivelj outermost at the 
upper side of the upper jaw and outermost at the underside of the 
lower jaw. 
The number of segments (myomeres) is about 182, or about 
113 præanal and 69 postanal segments. 
The greatest height of the body is. 2,3 mm. 
Distance from the point of the snout to anus. 16,75 — 
Length of the head. 1,3 — 
Distance from the point of the snout to the anterior 
margin of the eye. 0,8 
Diameter of the eye. 0,4 — 
II. Fig. 4 is a photograph 
of the next smallest Leptocepha- 
lid; its total length was 21,5 
mm. This specimen was cap- 
tured at the surface on 26° 45' 
lat. N. 59° 35' long. W. at 
7 o’clock p. m. the 6th of March 
1911. The body is compressed, the tail end tapering. Fig. 5 shows 
the distribution of the — very few — dark brown chromatophores 
Fig. 4. 5 : 3. 
Fig. 5. 20 : 1. 
Fig. 6. 7:1. 
on the tip of the tail. No pigment else is seen on the animal. 
The pectoral fins are small; embryonic fin rays are developed far 
forward in the vertical fins, but interspinalia are not yet visible. 
Fig. 6 represents the head with its powerfully developed teeth. The 
upper jaw has on each side 3 smaller teeth behind and 4 larger 
teeth in front. The lower jaw has on each side only 2 smaller and 
