60 PROCEEDINGS OF THE ACADEMY OP 



22. C. dislocata, Rogers, 1. c. 



23. C. Sigmoidea, Leo. 



Very near C. dislocata, but I have seen nothing intermediate, 

 the markings are much stronger, broader, and more confluent. 



24. C. tortuosa, Rogers, 1. c. 



Distinct by its small size and rather rounded form. 



25. C. serpentina, Rogers, 1. c. 



Stal has recorded a variety (mexicana) with black legs. 



26. C. Sylvia, Stiil, ]. o. 



Very distinct by its narrow depressed form, small size (28), and 

 generally unicolorous green surface beneath. Arizona. 



[This is the right place to notice a specimen of C. limhaticollis, Stal, said 

 to be from Chicago ; it is a Mexican species, allied to C. sylvia in form, but 

 reddish-brown instead of green, and the thorax has the margin, sides, and 

 a T-like mark on the disk white.] 



E. CHRYSOMELA, Linn. 



a. Thorax with the margin broad, not well defined. 



1. Elytra subsulcate, unicolorous. subsulcata. 



2. Elytra simple. 



Elytra margined with fulvous. flavomarginata. 



Elytra unicolorous. basilaria. 



b. Margin of thorax abruptly limited. 



1. Size large, color golden or purple. auripennis. 



2, Smaller, uniform feucous. 



Elytra tolerably shining. inornata. 



Elytra minutely alutaceous, opaque. opacipennis. 



27. C. subsulcata, Mannh. 



This belongs to a small group of North China species, accord- 

 ing to Suffrian. 



28. C. flavomarginata, Say. 



Suffrian gives a few comparative differences between this and 

 the European species, but I doubt their value. 



29. C. basilaris, Say. 



Leconte has united the vidua o^ Rogers and his own siibseriata 

 under this name; I feel tempted to go further and consider it is 

 a unicolorous form of C. flavomai-ginala. 



