148 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



30. MUGILID^. 



69. Mugil albula I^'mn.—MtdMt. 



A single specimen, No. 21,331 (36). D. IV, 8; A. Ill, 8; P. 16; V. I, 5; 

 C. 7 + 7. L.lat.42; L. trans. 13. 



Several small individuals of this species, No. 21,491, were also received. 

 The largest measiued 6 inches in length ; those of intermediate size, 4 

 inches; many others from an inch to an inch and a half. 



Bottle No. 5,151 contains several specimens of this species collected 

 in West Florida by Kaiser and Martin. ' 



70. MTjgil brasiliensis Agassiz. — Silver Mullet. 



A single specimen. No. 21,498 (28), 11| inches in lengtli. D. IV, 

 9; A. Ill, 8 ; P. 17 ; V. I, 5; C. 14. L. lat. 38; L. trans. 12. 



31. ATHERINID^. 



71. Chirostoma peuinsulae .sp. uov. Goode & Beau. 



Two specimens (Nos. 21,481 a and 21,481 b) were sent from Pensacola 

 by Mr. Stearns. We also have numerous specimens, No. 21,870, collected 

 in Lake Monroe, Fla., by Prof. Baird. 



Diagnosis. — The origin of the anterior dorsal fin is far in advance of 

 the anal fin and slightly in advance of the vent. The height of the body 

 is contained 5 times in total length without caudal (6 times in total 

 length) ; it is slightly less than the length of the head, and precisely equal 

 to the length of the pectoral. The diameter of the eye is contained 3 to 3i 

 times in the length of the head; is about equal to the length of the snout 

 and to the width of the interorbital space. Mouth very protractile. 

 Lower jaw long, contained 11 times in length of body without caudal, 

 more than one-third of the length of the head, which is contained 

 in total length of body 4 to 4J times. Silvery streak occupying the 

 fourth and upper half of the fifth series of scales. Caudal deeply 

 forked; lobes equal. D. V-VI, I, 8-9; A. I, 15-16; C. + 17 + ; P.I, 

 12; V. I, 5. L. lat. 38-39; L. trans. 9 J. 



72. Chirostoma vagrans sp. nov. Goode & Bean. 



One specimen of this undescribed species (No. 22,848) was sent from 

 Pensacola by Mr. Stearns, and two (Nos. 22,864 a and 22,864 &) were 

 sent from Virginia. 



Diagnosis. — The origin of the anterior dorsal fin is situated i)ehiud a 

 point midway between the origins of the ventral and anal fin and oppo- 

 site the middle of the interspace between the anal fin and the vent. 

 Height of the body contained 5i to 6 times in length without caudal, 

 and 6§ in total length, considerably less than length of head and length 

 of pectoral. Diameter of the eye contained 3 times in length of head, 

 greater than length of snout, and less than width of interorbital space. 

 Mouth slightly protractile. Lower jaw contained 15J times in length 



