38 PROCEEDINGS OF THE NATIONAL MUSEUM vol.82 



in collections. I have been unable to identify D. crenicollis (Say) 

 in any material examined. 



Jacoby confused several species with fuinata^ which he listed in 

 the Biologia as a variety of alternata^ following the Gemminger 

 and Harold Catalogue. But specimens of fumata from his collection 

 in the Bowditch collection from North Sonora, Mexico (Morrison) 

 have been labeled o^enicollis. Later, in the Supplement to the 

 Biologia, Jacoby decided that specimens he had previously referred 

 to crenicollis represented a new species, to which he gave the name 

 horni. 



D. horni^ in turn, represents another confusion of species. Accord- 

 ing to K. G. Blair, the specimen bearing the label D. horni in the 

 British Museum is from Teapa, which is in the lowlands of south- 

 eastern Mexico. Some of the same original set of specimens from 

 Teapa in the National Museum and also in the Bowditch collection 

 (from Jacoby) are also labeled D. horni. Mr. Blair states, on the 

 other hand, that the specimen of horni figured in the Biologia is 

 from Mexico (Puebla) in the Salle collection, and is "smaller and 

 shorter ", and " to my mind agrees with fumata Lee." (as determined 

 by writer) and that " Jacoby 's description of horni agrees as regards 

 the tibiae rather with the specimen figured than with that to which 

 the label is attached." 



Under horni^ as well as under ci^enicollis in his earlier treatment, 

 Jacoby gives as one of his localities " N. Sonora, Mexico (Morrison)." 

 Specimens in the National Museum taken by Morrison in this locality 

 (which is known now to be Arizona and not Mexico), are identical 

 with fumata LeConte and probably represent the same series as 

 that from which LeConte drew up his description, in part. There- 

 fore, it seems best to regard as the type of D. horni the specimen 

 figured in the Salle collection and thus to dispose of the name horni 

 as a synonym of D. fumata LeConte, and to describe the species from 

 Teapa, Mexico, as new.^* 



"DISONYCHA TEAPENSIS, new species 



Plate 8, Figure 44 



Disonycha horni Jacoby, Biol. Centr. Amer., vol. 6, suppl., p. 295, 1891 (in part). 



Description. — Elongate oblong (7.5 mm), not shining, yellow, pronotum uneven and 

 with two anterior darl' spots; elytra with traces of costae in female, and with dark 

 sutural, median, and submarginal vittae ; undersurface with middle of metasterniim and 

 area about coxae dark. Head with Interocular space about half width of head, smooth in 

 middle with punctures on either side near eye ; tubercles distinct, interantennal area 

 somewhat produced but not acutely so ; pale with narrow occipital band, somewhat dark- 

 ened tubercles, and dark labruin. Antennae extending about to middle of elytra, dark 

 with paler basal joints, fourth joint nearly twice as long as third. Prothorax not twice 

 as wide as long, with arcuate sides ; disk uneven with lateral callosities ; surface aluta- 

 ceous, indistinctly punctate ; pale, with two wpil-uiarked anterior dark spots. Srutellum 

 dark. Elytra oblong with parallel sides, humeri pronounced, with a short, deep intra- 

 humeral sulcus ; in female traces of costae in apical half of elytra ; surface alutaceous, 



