DR. GUNTHER ON THE FISHES OF CENTRAL AMERICA. 441 
107, Exzorris Picta. 
Kner, Sitagsber. bayer. Ak. Wiss. 1863, p. 223, and Abhandl. bayer. Ak. Wiss. 1865, p- 18, tab. 3. fig. 1. 
D. 6|c5- A.5 I. lat. 60. 
This fish is closely allied to EZ. gyrinus, but is said to be distinguished by having the 
height of the body only one-sixth or one-seventh of the total length’; lower parts of 
the body with numerous whitish spots and streaks. 
From the Pacific side of the Isthmus. 
108. ELzorris SEMINUDA. 
Giinth. Proc. Zool. Soc. 1864, p. 24. 
Le ees! Ale 
The head and the trunk are naked; the tail is covered with small scales; head 
depressed, broader than high, flat above, its length being two-sevenths of the total. 
Snout rather obtuse, longer than the eye, with the lower jaw somewhat prominent; the 
cleft of the mouth extends to below the anterior margin of the orbit. Teeth in the 
upper jaw in a narrow band; the lower has four somewhat larger and recurved teeth in 
front; they appear to form a single series; palate toothless. None of the fin-rays are 
prolonged; the pectoral does not quite extend to the origin of the second dorsal; 
ventral much shorter than pectoral, its inner.ray is the longest, the others gradually 
decreasing in length outwards; caudal fin rounded. Brown, with numerous well- 
defined white cross stripes on the head as well as on the body ; vertical fins black. 
Although there is only a single example, 20 lines long, in the collection, the charac- 
ters of this species are so well marked that I have not hesitated to describe it. 
109. AMBLYOPUS BREVIS. 
Giinth. Proc. Zool. Soc. 1864, p. 151. 
HG "to. “AS 15. 
The height of the body is one-eighth of the total length (without caudal); the length 
of the head two-ninths. Eyes minute. Jaws with a series of longish, widely set teeth. 
Caudal fin black. 
One specimen, 3 inches long, was found on the Pacific coast of Panama by Messrs. 
Dow and Salvin. 
The specimen being young, I abstain from giving a detailed description. In its 
dentition it agrees with A. sagitta from California, and therefore it would belong to the 
subgenus Tyntlastes (Proc. Zool. Soc. 1862, p. 194), The scales must have been very 
thin and deciduous, and do not appear to be very small, at least not on the hinder part 
of the body. ‘The ventral is much longer than the pectoral, aud the caudal longer than 
the head. 
* According to the figure it is higher. 
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