long's second expedition. 189 



been described under different names by several authors ; it has 

 the same beautiful variable color upon the elytra, which induced 

 Olivier to call that insect vittatm, and Beauvois to give the name 

 of tecniatus, but it is a small species, the lateral edge of the 

 thorax is a little curved outwards near the posterior angles, 

 whilst that of micans is rectilinear in the same part, and the 

 interstitial [285] lines of the elytra are convex, whilst those of 

 micans are nearly flat. 



CISTELA Fabr. Latr. 



1. C. BiNOTATA. — Blackish, sericeous; elytra with a humeral 

 rufous spot. 



Inhabits North-west Territory. 



Body black, polished ; in a particular light sericeous both 

 above and beneath with small hairs, which do not, however, at 

 all conceal the punctures ; head punctured ; palpi and three basal 

 joints of the antennae rufous-yellow ; thorax with equal large 

 dense punctures ; very slightly contracted behind, rounded be- 

 fore ; posterior angles not prominent ; an abbreviated longitudinal 

 impressed line at base, on each side of which is an obsolete 

 dilated impressed lunate space; elytra densely punctured, and 

 with punctured striae; humeral gibbosity rufous ; feet dull rufous, 

 sericeous. 



Length nearly three-tenths of an inch. 



[Belongs to Mycetochares Latr. — Lec] 



2. C. SERiCEA. — Pale testaceous, sericeous; striae of the elytra 

 obsolete. 



Inhabits United States. 



C. sericea Knoch in Melsh. Catal. 



Head minutely punctured, transverse impressed line before the 

 antennae very obvious ; thorax semioval, a little truncate before 

 and not undulated behind ; posterior angles rectangular ; elytra 

 hardly perceptibly darker towards the tip, rather lighter at base ; 

 strifle obsolete, excepting two next the suture which are distinct ; 

 wings a little dusky, particularly towards the tip ; feet somewhat 

 paler than the body. 



Length one-fourth of an inch. 

 [286] A very common species, particularly in July on the Ceano- 

 thus Americanus and other flowers. 



