Dec, 1845.] 313 



gins of the central segments, silvery-sericeous ; abdominal style black, 

 broadly silvery-sericeous at base. 



3. M. lineata. Black ; elytra with four narrow longitudinal ashy lines. 

 1$ 1. long. — Pennsylvania. 



Mordella lineata, Melsh. Catal. 



Black : antenna; black : thorax pictured as in the preceding species : scu- 

 tel yellowish-sericeous : elytra with the sutural and lateral edges, and four 

 longitudinal, posteriorly abbreviated lines, ashy or yellowish : beneath and 

 feet black, ashy sericeous ; abdominal segments as in the preceding species. 



4. M. atrata. Black, immaculate, 1^ 1. long. — Pennsylvania. 

 Mordella atrata, Melsh. Catal. 



Black, slightly ashy-sericeous, punctured as is common : antennae black, 

 with the four first joints dusky: elytra with the sutural stria? distinct, entire; 

 anal style rather elongated, robust. 



5. M. nigricans. Deep black; four basal joints of the antennas, labrum, 

 and palpi, dull rufous or testaceous. 1 1. long. — Pennsylvania. 



Mordella nigricans, Melsh. Catal. 



Deep black, sparsely ashy pubescent: antennae four basal joints dull ru- 

 fous ; labrum and palpi obsoletely dull rufous : thorax and elytra, though 

 finely, yet distinctly punctulate and shagreened ; the posterior edge of the 

 former strongly bisinuate; the latter with the sutural stria? entire; anal 

 style elongate, rather slender. — This is a slender species. 



6. M. fuscata. Dark fuscous, golden sericeo-pubescent; anterior feet 

 rufous, 1^ 1. long. — Pennsylvania. 



Mordella fusca, Melsh. Catal. 



Dark brown, densely dull golden pubescent, punctulate and shagreened as 

 is common : antennae filiform, hardly serrate, testaceous, dusky from before 

 the middle to the tip ; mouth and palpi testaceous : beneath and posterior 

 feet blackish, glossy ; two front pairs of feet dull rufous ; anal style mode- 

 rately elongate. 



7. M. discolor. Head and throax blackish ; elytra reddish-brown, with 

 the base and a lateral spot yellowish If 1. long. — Pennsylvania. 



Snbparallel : head blackish, sparsely yellowish pubescent ; antenna? fili- 

 form, fuscous, with the four first joints rufous ; labrum and palpi dull tes- 

 taceous, somewhat piceous : thorax blackish, pubescent as the head : scutel- 

 lum densely yellowish pubescent : elytra dull reddish-brown, with the basal 

 fourth absolutely dull rufous ; an irregular basal fascia and a small lateral 

 spot behind the middle, ochraceous : beneath, middle and hind feet black- 

 ish ; fore-feet and all the ultimate tarsal joints, dull testaceous; anal style 

 moderately elongated. 



Var. a. General color of the elytra dull rufous, with a large dusky spot to- 

 wards the tip, which is ochraceous-pubescent — Mordella bifasciata, Melsh. 

 Catal. 



Var. b. Lateral elytral spot of the type changed into a fascia. 



8. M. bihamata Blackish ; elytra, antenna? and anterior feet, dull ru- 

 fous, the first with the apex and two angulate fasciae, ochraceous. If 1. long. — 

 Pennsylvania. 



