The fishes of the Danmark Expedition. 653 



dorsal fin has a concavity which indicates the later division between 

 D^ and D-, and the ventrals are fairly distinct. The fin-ray for- 

 mula is: 



D' D' A С P 



8(9) 19(20) 17(18) 20(21) 17 



The colour of this larva (PI. XLVI, fig. 8) is the following. 

 The ground-colour is transparent silvery blue (especially on the 

 head), the abdomen yellowish-white and the iris silvery. The black 

 pigment covers the lower lateral parts of the head (especially the 

 jaws and preoperculum) as also the peritoneum above the stomach 

 and the occipital region; there is also a little on the base of the 

 pectorals. Characteristic further are 1 pigment streak along the 

 anal fin and two isolated pigment spots along the dorsal fin; also 

 two spots at the end of the hypural bone and one above this. 

 Lastly, there is fainter pigmentation evenly distributed on the head 

 and the pectorals. 



As will be seen, the pigmentation differs somewhat from that 

 described earlier; that the specimen is a Triglops pingelii, however, 

 is easily seen from the whole form of the fish, the length of D- 

 and the relatively large ventrals, the pigment along the anal and 

 on the jaws etc. 



At a length of ca. 50 mm (PI. XLVI, fig. 9) the species is readily 

 distinguished (in addition to from its elongated, narrow form) from 

 its black jaws, pigment spot on the gill-cover, large and small brown- 

 black pigment dots on the abdomen and a characteristic pigment 

 marking on the side of the trunk and tail (under the dorsal fin) in 

 the form of isolated or connected, oblong spots. The rays of the 

 pectorals and unpaired fins have dots of pigment. 



At ca. 80 mm (PI. XLIV, fig. 3) the jaws are blackest in the male. 

 The characteristic marking on the sides of the fish are now changed 

 to a slightly variable, but characteristic system of dorsal and medio- 

 lateral spots (the first are the largest and most irregular, the last 

 the most numerous), which are isolated or mutually connected in a 

 characteristic manner. Several of the dorsal spots have disappeared 

 in the brown ground-colour of the back and head; this also applies 

 to the spot on the gill-cover. The pigment on the caudal fins is 

 present mostly as a dark marginal band and that of the pectoral is 

 in the form of ca. 4 curved cross-bands. 



In the female of 155 mm (PI. XLIV, fig. 1) the head and back 

 have a reddish to dark-brown colour. The characteristic light spots 

 on the side of the tail (produced by the fusion of the dark spots 

 on the younger specimens) have the whitish-blue colour of the 

 ventral aspect and are not (as in the male) distinctly marked off 



