NATURAL SCIENCES OF PHILADELPHIA. 77 



Chelymorpha, Chcv. 



1. C. casidea (Fab. 1775). cribraria (Fab.), Boh. Mon. i. 



Oval oblong, bright red, body beneath and legs black ; thorax 

 with four black dots placed transversely; elytra with a common 

 sutural spot below the scutellum, and each with six dots black. 

 L. .38-.46. Atlantic Region. 



Var. Thorax with six spots black. 



Vg.r. Legs more or less red. 



2. C. Lewisii, sp. nov. 



Very similar to the above, but much paler; thorax with two 

 or four spots (in the former case, body pale beneath ; in the lat- 

 ter, dark) ; prosternum with the groove not extending in front of 

 the coxjfi. (In C. cassidea it goes the whole length.) L. .42. 

 ISTew Mexico (Leconte). 



3. C. phytophagica, sp. nov. 



Again very near C. cassidea ; thorax smaller, more shining, 

 more sparinglj- and strongly punctate; elytra more coarselj' and 

 visibly punctate. L. .40. Arizona (Leconte). 



Physonota, Boh. 



1. P. unipunctata (Say), J. Acad., iii. 434. Helia?itki (Rand.), Best. J. ii. p. 30 

 Boh. Mon. i. 



Oval, convex, pale yellowish-ochreous ; thorax witli three black 

 dots, one discoidal sub-eJongate, one on either side nearer tlie 

 base ; antennae black, base pale. L. .38-.46. Atlantic Region. 



C. 5-punctata, Walsh, does not differ from this species. 



Cassida, Linn. 



1. C. nigripes, Oliv. E. M., v. 348. Boh. Mon. ii. 362, 29. 



Brownish-red above, black beneath, antennas with joints 1-7 

 red ; elytra rather deeply punctate striate, margin not widely ex- 

 planate, edge thickened, each with three ratlier obsolete black 

 spots, one before the middle in the fourth and fifth interstices, one 

 under the callus, and one behind the middle, both in the eiglith 

 and ninth interstices. L. .20-30. 



Legs black, or at most the tibiae pale, (^-maculata, Mann. Boh.) 



(3. Legs entire pale, ellipsis, Lee.) 



Ranges across the continent. 



