296 Ay res' Description of the 



This species inhabits both the salt and fresh water ; in 

 Old Man's Harbor it is very abundant, and I have found it 

 also in the Connecticut river on the south side of the island, 

 and in the Hockanum river, about two miles east of Hart- 

 ford, Connecticut. The specimen figured was one from the 

 fresh water ; they are a little deeper in proportion to their 

 length than those from the salt water. 



In the want of armature on the sides, this species resembles 

 the G. Imvis of Cuvier, and apparently the apeltes. If Mr. 

 Swainson's arrangement were to be adopted, this character 

 would place it in his subgenus Leiurus. The specimen from 

 which my description was drawn was about as large as any I 

 have seen. 



FuNDULUS FUSCUS. 



Plate Xni. Fig. 2. 



Entire length two and one tenth inches ; greatest depth 

 nine twentieths. Body rather rounded, somewhat compressed 

 toward the tail. Color above and on the sides very dark 

 brown, striped longitudinally with narrow lines, which are 

 lighter. Abdomen, lower jaw, preoperculum, and lower part 

 of the operculum very light brown, almost white. Near the 

 origin of the caudal fin a black vertical band crosses the body. 

 Mouth rather small ; teeth numerous and arranged in the fol- 

 lowing order. Those in the lower jaw are in a double row, 

 which however is not perfectly regular. In the upper jaw, 

 the intermaxillaries are densely crowded with teeth, while on 

 the maxillaries are none. On each palatine bone is a double 

 row, and on the vomer are a few. The superior pharyngeals 

 are thickly covered ; the same is true of the inferior pharyn- 

 geals, the lower part of the last pair of branchial arches, and 

 the posterior one of the chain of small bones, which extend 

 backward from the tongue and connect the arches. The 

 tongue is smooth. 



The eyes are three twentieths of an inch from the termi- 

 nation of the upper jaw, and one tenth of an inch in diame- 



