16 THOS. L. CASEY. 



organs, and bases of the antennae pale flavo-testaceous, remainder of antennae 

 piceous-brown ; under surface of the body slightly darker than the legs, but 

 paler than the upper surface. Head slightly longer tlian broad, upper sur- 

 face distinctly but minutely granulate ; labrum one-half as wide again as 

 long, very feebly eniarginate anteriorly, and bearing six setae, the two lateral 

 ones very long ; eyes moderate, coarsely granulate, one-third their length in 

 advance of the posterior angles ; antennae scarcely one-half as long as the 

 body, first joint slightly shorter and tliicker than the second, equal in length 

 to the third, joints four to ten shorter than the third, sub-equal and cylin- 

 drical, last joint very slightly thicker and two-thirds longer than the tenth, 

 sub-cylindrical and obtusely acuminate at tip ; mentum tooth distinct, sim- 

 ple, projecting below the general surface ; immediately behind the tooth are 

 two very large, deep, closely approximate, foraraenous punctures ; fourth 

 joint of maxillary palpi extremely short and narrow, almost invisible. Pro- 

 thorax slightly broader and equal in length to the head, one-half as wide 

 again as long ; anterior margin nearly transverse, posterior transverse and 

 feebly sinuate toward the angles ; sides arcuate, slightly more strongly so 

 anteriorly, very feebly sinuate just before the posterior angles, which are 

 strongly and acutely toothed ; anterior angles very slightly rounded ; surface 

 rather feebly convex and very narrowly bordered. Elytra at base slightly 

 wider than the prothorax ; humeral angles rather pronounced ; sides parallel 

 and feebly arcuate ; suture three times as long as the prothorax ; border 

 narrow, continuing from the apices as a sutural stria, other striae almost 

 obsolete: near the inner basal angle of each elytron there is a small circular 

 wart-like elevation, which is apparently setigerous ; there are on the disk of 

 each two setae, and just behind the humeral angles three rather closely 

 approximate, also two to three near the border and two-thirds the length 

 posteriorly. Scutellum small, acute behind, sides arcuate. First four joints 

 of anterior tarsi decreasing uniformly and very gradually in length and width, 

 very short, last joint somewhat longer than the first and second together, 

 narrow at base. Last ventral segment covered very sparsely with very fine, 

 short, recumbent puV)escence toward tip, where there are four equi-distant 

 erect setae arranged transversely. Length 2.3, breadth 0.9 mm. 



Atlantic City, New Jersey; one specimen. 



This seems to be ji very distinct species, being very much more 

 slender and parallel than any other which I have seen. Resembles 

 scitnlits in the Ibrameniform apertures behind the mentum tooth ; they 

 are, however, smaller and closer than in that species. 



TITHAMS n. gen. 



Mentum coriaceous, short and very wide, broadly, roundly and very evenly 

 emarginate in front, continued anteriorly by the hypoglottis, which appears 

 to form a part of the true mentum ; hypoglottis and mentum together trape- 

 zoidal ; sides straight and rapidly convergent, narrowly and transversely 

 truncate anteriorly. Maxillary palpi very well developed, five-jointed, very 

 sparsely and coarsely setose, last joint very small, subulate. Labial palpi 



