'niK AXT-i:()VlNG I5EE'l'Li:S. 329 



h. Head lariic. ti'uiiralc; anlcima' very i-ciuoU'; lirst dorsal 

 dl' alxldiiicii Willi (listiiK't liasal carina'. 



XVII. El'PLECTLS. 



////. Ilcail sniallcr. (lie Irout iiion' ahniptly and .stron,2jly nar- 

 rowed; aiileiiiKL' less distant; al)doiiieii without basal 

 carinas Tiiesiastes. 



gff. Thorax without a discal iinpression ; elytra without fliscal 



^tvUv. BlBLOl'LECTl .S. 



ff. rrosteriiuiii liuoly but distinctly carinato thronghoiil t'u' mid- 

 dle of its len.uth ; thorax with a small, subapical impressi ii. 

 its basal fovcie connected by a transvi-rse snlcn ; antenna- 

 less wi<lely separated, the tenth .joint larirer than usual. 



'PlIESIUM. 

 <<■. Anlennal club consislin.i;- almost entirely ot the lai'L'- ■ abrupt ter- 

 minal Joint; ihorax without discal impressions. 

 /. Ninth and tenlh anlennal joints very short, dist'ictly trans- 

 verse. 

 ;. Elytra with a subhumeral fovea from which an acutely ele- 

 vated carina extends to apex; also with discal strijie reach- 

 inir to middle; head never wider than thorax, the latter 

 with a large fovea on each side connected by a transverse 

 groove. AcTiUM. 



;/;. Elytra without trace of a subhumeral fovea and without 

 discal striti?. but with an elongate basal impression. 

 A-. Firi«t dorsal segment of abdomen much elongated and with- 

 out trace of a median impression. 



XVIII. Trimiomelba. 



kk. First dorsal shorter, equal to second. XIX. Melba. 



a. Ninth and tenth antennal joints larger, less transverse; elytra 



with a discal stria and with two basal fovete but without 



snblunneral fovea: sulcus of thorax not continued down the 



tianks but ending in small enlai-gements near the margin. 



TUIMIOIT-IXTIS. 



T\af(>)nis ioluhr Lee. dark hrown, ixilishcd. clothed Avitli long, 

 dense pit])escenee, antenna' and legs yeliowish. length 2.1 mm., oc- 

 enrs i-nrely near Cincinnati. 



XV. RHExiusLec. 1849. (Gr.. "I break.") 



Head and thorax each widei- than long; tarsi with two unequal 

 claws; antenmr elbowed. One of Ihe Ihree species occurs in the 

 Slate. 



r,-s.\ (I'.r.T). i:iii:\irs iNscrri'ii s !.<>(•.. I'.o'^t. .lomai. Nat. Hist.. \\. 1S4!). 

 10:5. 



Subcylindrical. depressed. Pale reddish-brown, clothed with short erect 

 hairs. Head twice as wide as long, base truncate, front rounded, concave 

 and with three foveas occiput carinate. Antenuixj reaching base of thorax, 

 joints :> to 8 transverse, nearly ('((nal; ninth twice as wide as third; tenth 



