Radclife and Welsh — Notes on Fishes from Chesapeake Bay. 37 



E. sucetta E. oblongus 



Number of transverse rows of scales run- 

 ning downward and backward between 

 shoulder and base of caudal 36 or 37+1 42 to 45 +1 or 2 



Predorsal scales 12 or 13 15 or 16 



Scales from origin of ventral upward and 

 forward to and including median line of 

 back 15 18 



Scales upward and backward from the 

 same point 13 15 



Scales from origin of anal upward and 



forward 13 15 



10. Moxostoma macrolepidotum (LeSueur). Mullet. 



Common; many caught in pound-nets. The largest example seen was 

 41 cm. in length, and weighed 1% lbs. 



CyPRINIDjE. 



11. Cyprinus carpio (Linnaeus). Carp, Dutchman. 



Common. 



12. Hybognathus nuchalis Agassiz. Gudgeon. 



This form, common throughout the region, was found to be extremely 

 abundant in Swan Creek. The individuals here were of large size (reach- 

 ing 16.2 cm.) and far outnumbered Notropis hudsonius amarus, from 

 which they could be readily distinguished by the lustrous brassy sheen 

 covering the entire body. 



13. Semotilus corporalis (Mitchill). Chub. 



Only taken in the old canal basin at Lapidum, Maryland, where it 

 occurs in considerable numbers. 



14. Semotilus atromaculatus (Mitchill). Chub. 

 A single example taken at Lapidum, Maryland. 



15. Leuciscus vandoisulus Cuvier & Valenciennes. 



Common in Swan Creek. A breeding male 6.3 cm. long had many 

 small tubercles distributed over entire surface of head ; among the small 

 ones on top of head were enlarged ones ; a row of seven large ones above 

 orbit ; a small tubercle near apical margin of scale on nearly all of the 

 body scales ; upper margin of first pectoral ray armed with a row of small, 

 antrorse, spine-like tubercles, largest on distal portion of ray. 



16. Notemigonus crysoleucas (Mitchill). Pond roach. 



Common. One example 18 cm. long, taken in a pound-net in the 

 Bohemia River, showed the characteristic coloration of N. versicolor 

 (DeKay). 



