FISHES 95 



short dark cross bars: coast of California from Point Conception to 

 Lower California; often very common. 



F. similis (Baird and Girard). Length 150 mm.; rays of dorsal Im 



11 to 13, of anal 13; scales 33-11; color olivaceous, with 10 to 15 dark 

 side bars; body slender; snout very long: coastal waters of the Gulf 

 States, in brackish water; very common. 



F. diaphamis (LeSueur) (Fig. 45). Length 100 mm.; head 4; depth 

 4.8; color olivaceous; sides silvery, with about 20 dark vertical bars; 

 rays of dorsal fin 13; anal 11; scales 45-15; body rather slender: eastern 

 and central States from Maine to Cape Hatteras; westward to Colorado; 

 Great Lakes and tributaries; common in streams and ponds; also in the 

 mouths of rivers. 



Subspecies of F . diaphamis 



F. d. menona Jordan & Copeland. Rays of dorsal fin 12; anal 10; 

 scales 48-12; bars very distinct; back spotted: Ohio River to the 

 Mississippi. 



F. rathbuni Jordan & Meek, Length 65 mm.; head 3.8; depth 4.5; 

 color pale green, with small irregular oblong dark brown spots scattered 

 over head and body; rays of dorsal and anal fins 11; scales 38-12: 

 eastern North Carolina; common; not in salt water. 



F. alboUneatus Gilbert. Length 85 mm.; head 3.3; depth 3.6; color 

 dark brown ; sides plumbeous, with whitish streaks in males and narrow 

 black lines in females; rays of dorsal and anal fins 10 or 11; scales 42: 

 Tennessee basin in Alabama. 



F. majalis (Walbaum). Mayfish; killifish. Length 150 mm., 

 being the largest of the genus; head long; color olivaceous, with about 



12 dark bars; a black spot on the dorsal fin; dorsal with 12, anal 10 rays; 

 scales 36 in the lateral line: Cape Cod to Florida; common in shallow 

 bays. 



2. Plancterus Garman. Intestine long and convoluted; pha- 

 ryngeals very small: 2 species. 



P. kanscB Gar. Length 75; head 3.5; depth 4.5; color greenish 

 above; sides silvery, tinged with yellow and with 14 to 18 dark vertical 

 bars; rays of dorsal fin 14 to 15; anal 13 or 14; scales 60-21 : South Dakota 

 to western Iowa, Texas and New Mexico; common in tributaries of the 

 upper Arkansas. 



3. Xenisma Jordan. Dorsal fin inserted over anterior part of anal; 

 scales small, 50 in the lateral line; colors brilliant: 2 species. 



X. catenatus (3torer). Length 150 mm.; head 4; depth 4.5; color 

 bluish or greenish, with an orange spot on each scale forming thus 



