LAMPREYS AND FISHES OF INDIANA. 261 



mostly orange. The opercular spot is lilack, margined with red, and 

 somewhat larger than the eye. In alcohol the brighter colors fade, but 

 there usually remain evidences of their former presence. Length at- 

 tained by old specimens about eight inches. 



Minnesota and region about the Great Lakes east to New England 

 and south to South Carolina east of the mountains. In the Mississippi 

 Valley the species is rarely seen far south in Illinois and Indiana. Prof. 

 Forbes has reported it from Peoria, and Dr. O. P. Jenkins appears to 

 have captured it in Vigo County, Indiana (10, 95). In northern Illi- 

 nois and Indiana it is extremely abundant. 



Lakes of Laporte County, St. Joseph's River, Mauniee River, Kanka- 

 kee River and Tippecanoe River (i, '77, 44); St. Joseph's River (^, 

 '88, 155) ; Marshall County (4, '88, 159) ; Lake George in Lake County 

 (i4, No.;}, 53); Eel River basin (^,'94, 39); Vigo and Wabash 

 counties (24, '93, 100). 



Forbes {H, No. 3, 53) has given attention to the food of this species. 

 The young eat Chironomus larvse to the extent of fifty-one per cent, of 

 the whole diet, entomostraca twenty-six per cent. , together with insects' 

 eggs and small crustaceans. Somewhat older specimens had eaten in. 

 sects and Gammaridiv. A few mollusks also had been devoured. The 

 adults were found to have taken forty-six per cent, of mollusks, prin- 

 cipally univalves, twenty per cent, of insects, twenty-two per cent, of crust- 

 aceans, and twelve per cent, of vegetation. No fishes Avere found in 

 the stomachs. The large quantity of molluscan food yvill serve to explain 

 the character of the teeth in this and the preceding species. In both 

 species the teeth are rounded or flattened on the grinding surface, thus 

 being fitted to crush shells, etc. The eggs are laid in nests in the mud, 

 sand and gravel, and are watched by the male (Bean So, 116).* 



'■'The following species of icpomi'.y have not yet been taken within the State, but occur 

 within such close proximity to our borders that they will almost certainly be ultimately 

 found to belong to our fauna. 



Lkpomis symmetkicus Forbes. 



Jordan and Gilbert, 1882, .s, 473. 



This is a small species, about two and one-half inches in length. It was first described 

 by Forbes Irom specimens taken in Illinois, but it has since been found to range to Louis- 

 iana. It has a supplementary bone and palatine teeth. The scales are relatively large, the 

 formula being (1-34-14. The mouth small. The pectoral fins attain the anal. The color is 

 dark green, and there are ten vertical bars on each side. No stripes on the cheeks. The 

 male has a dark spot on the last dorsal rjiys. 



Lkpomis ischyrus Jordan and Nelson. 



Jordan and GiUjert, 1882, S, 474; Bollman, 1888, 11, 570. 



Of this species only one or two specimens have so far been found. One of these was 

 obtained in the Illinois River. Another is said to have been taken by Nelson in the Calu- 

 met River near South Chicago. The length is seven inches. The scales are 7-46-15. 

 Depth in length two. Head in length three. Both the pectorals and the ventrals reach to 

 the anal. There is an evident supplementary bone. The gill-rakers are long. Opercular 

 flap larger than the eye and bordered all round the daik spot with paler. The general 

 color is dusky, mottled with orange and blue; the cheeks with wide, blue stripes. Belly 

 and lower fins coppery yellow. 



