1B85.J PROCEEDINGS Ol'^ UNITED STATES NATIONAL MUSEUM. 555 



This species seems to resemble U. stigmwa Jor., as the latter is de- 

 scribed in the S.yiioi)sis of Fishes of North America. It differs, how- 

 <3ver, from (J. stig7nan iu the flu-formula, iu having the premaxillaries 

 freely protractile, and in having the cleft of the month extending behind 

 the anterior border of the eye. Professor Jordan's species is also de- 

 scribed as having the head obliquely truncate in profile. 



3. Labidesthes sicculus Cope. 



A single specimen of this fish was obtained at Westville, in Holmes 

 County.* Its color is a dark olive-green instead of the pale-olive green 

 that characterizes our northern specimens. This species was originally 

 described by Professor Cope from specimens found iu Michigan. In 

 1881, in Bulletin U. S. Fish Commission, Vol. II, 64, I noted the occur- 

 rence of this fish at several points in the State of Mississippi. I have 

 now succeeded in tracing its distribution to the Gulf. 



4. Mugil albula L. 



Several specimens of these were obtained at Saint Augustine. I 

 find nothing noteworthy about them except that their caudal fins are 

 squamated nearly to the tips. Other fins scaleless or nearly so. 



5. Heterandria ommata Jordau. 



Zy^'onectt'8 maiiuii, n. sp., Hay, MS.* 



This species is described from two specimens, the largest of which is 

 but seven-eighths of an inch in length from the snout to the tip of the 

 <.-audal flu. The smaller specimen, on being subjected to autopsy, 

 proved to be a female with well-developed ova. The species may, there- 

 fore, contend with Gimrdinm formosus for the honor of being the small- 

 est known vertebrate. 



The flsh is fusiform in outline, slender, and somewhat compressed. 

 The depth is contained in the length to the base of the caudal 5^ times. 

 The head in the same distance, 4 times. The premaxillary is extremely 

 protractile. Tlie mouth is very small, the cleft almost perpendicular, 

 descending scarcely to the level of the center of the pupil. The ven- 

 tral surface of the lower jaw looks almost directly forward, so that the 

 anterior end of the flsh is truncated. The teeth are pointed; but 

 whether in one row or more I have not been able to determine with 

 certainty. The eye is large and circular, twice the length of the snout, 

 and contained iu the head 2^ times. The upper surface of the head is 

 flat, and the iuterorbital space about equal to the diameter of the eye. 

 The gill-membranes are narrowly connected and free from the isthmus. 



Scales covering the body rather large, in about 30 transverse and 9 

 longitudiual rows. Rays of flns as follows : D. 7, A. 10. The anal 

 slightly in advance of the dorsal. The beginning of the dorsal is mid- 

 way between the hinder border of the opercle and the base of the cau- 



* A comparison of Prof. Hay's proposed new species with the types of Heterandria 

 ommata shows that the two are identical. The statement in the original description 

 relative to the position of the dorsal is incorrect.— T. H. Bean. 



