36 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 82 



that he had " not much doubt that the insect is but a pale or maybe 

 immature form of D. alternata or an aUied species." 



I am indebted to Dr. E. C. Van Dyke for the opportunity to 

 examine a series of specimens taken by E. P. Van Duzee at Pata- 

 gonia, Ariz., a small station on the southeast slope of the Santa Rita 

 Mountains, on August 2, 1924, two of which Dr. Van Dyke has 

 donated to the collection of the National Museum. The species was 

 described from 13 localities between Ventanas, Mexico (Durango?) 

 and Bugaba, Panama, and no type locality is designated. This is the 

 first record of its occurrence in the United States. 



Mr. Schaeffer has sent me two unidentified specimens of this 

 species from his collection from Nogales, Ariz., and Hot Springs, 

 Nev. In the latter specimen the elytral vittae are fully as dark 

 as in other vittae species. Two paratypes are in the National 

 Museum from Capetillo, Guatemala, collected by G. C. Champion. 



15. DISONYCHA FUMATA (LeConte) 

 Plate 4, Figure 17 



Haltica fumata LeConte, Proc. Acad. Nat. Sci. Philadelphia, vol. 4, p. 86, 1858 



(Texas and New Mexico; type in LeConte collection, Mus. Corap. Zool.). 

 Disonychci alternata var. fwmata Gemminger and Harold, Catalogus coleoi>- 



terorum, p. 3496, 1876. 

 Disonycha crenicollis Hobn, Trans. Amer. Ent. Soc, vol. 16, p. 204, 1889. — 



Jacoby, Biol. Centr. Amer., vol. 6, pt. 1, p. 316, 1884 (in part). (Not Altica 



crenicollis Say.) 

 Disonycha alternata Jacoby, Biol. Centr. Amer., vol. 6, pt. 1, p. 311, 1884 (in 



part). 

 Disonycha' horni Jacoby, Biol. Centr. Amer., vol. 6, suppl., p. 275, 1891 (in 



part) (Puebla, Mexico; type in British Museum). 

 Disonycha fumata Schaeffer, Journ. New York Ent. Soc, vol. 27, p. 334, 1919. 



Description. — Oblong oval, feebly shining, smooth ; pale, the labrum, 

 sometimes the frontal tubercles, and the occiput dark ; the pronotum 

 always with 2 and often with 5 spots, the elytra with the usual sutural, 

 median, and submarginal vittae, the metasternum usually dark, and in 

 darker specimens apex of femora, the tibiae, and the tarsi dark ; anten- 

 nae long and slender, fully one half length of beetle in male. Head 

 with interocular space half width of head; frontal carina somewhat 

 produced, but not acutely ; tubercles not swollen but well marked ; sur- 

 face smooth with coarse punctures on each side about fovea near eye, 

 often bearing hairs ; labrum long and always dark, tubercles and occi- 

 put frequently dark. Antennae unusually long, dark with paler basal 

 joints, fourth joint nearly twice as long as third; fourth, fifth, sixth, 

 and seventh subequal, the fourth slightly the longest. Prothorax 

 barely twice as broad as long, often less,convex, a slight depression in 

 middle near basal margin ; anteriorly with arcuate sides ; somewhat 

 shining, under high magnification minutely alutaceous, very indis- 



