1892] MARYLAND ACADEMY OF SCIENCES. 153 



0. C. aiirifera Say, Jonrn. Acada. Pliilada., v. IV., 1825, 

 p. 332, No. 4. 



Not yet rediscovered, and known only from the 

 description of Mr. Say, who captured it near the Konza 

 Indian settlements, probably in what is now Nebraska. 

 It seems to be a pale variety of C. cariicularis, w^hich 

 inhabits that State ; but the size given is smaller than 

 that of any specimen thus far brought to our notice. 



7. 0. vitripennis Say, Journ. Acad. Philada., v. VI., 1830, 



p. 236, No. 3. 



Mr. Say's specimen was obtained in the region of the 

 Arkansas river, probably in Colorado. It occurs in New 

 Mexico, northern Texas, Arizona, Louisiana and Florida. 

 Dr. Edward Palmer captured a specimen on the shore of 

 Biscayne Bay, Southern Florida. 



8. C. pallida Dist.Biol. Cent. Amer, Homopt, p. 8, pi. 2, 



fig-V. 



This species has been captured in Mexico and central 

 Texas. By the pallor of its colors and obsoleteness of 

 its markings it stands in about the same relation to C. 

 vitripennis Say as C. sitperha Fitch does to C. tihicen 

 Linn. Both of these species will most likely be sup- 

 pressed when the life histories of the forms shall have 

 been sufficiently studied. 



9. C. biconica Walker, Brit. Mus. List, Homopt, v. 1., p. 



120, No. 57. 



This beautiful West Indian form is common on the 

 island of Cuba, and I have seen also a specimen from 

 Mexico, and another from southern Florida. Specimens 

 of both sexes from Cuba vary widely in the amount of 

 marking on the mesonotum. In a female specimen from 

 near Havana the black lobate markings of the mesono- 

 tum are entirely obliterated. 



