1854.] 75 



B. Frons medio producta, vel late emarginata vel truncata ; scutellum trian- 

 gulare. 



4. L. b u 1 1 a t u s, elongatus, depressus testaceus, nitidus glaber, thorace lati- 

 tudine non breviore, lateribus rectis, postice subangustato, parce punctato, liner, 

 utrinque profunda exarato, dorso bulla magna laevi paulo convexa impressione 

 minus profunda definita ornato, elytris obsolete striato-punctulatis. Long. 07. 



One female found at the junction of the Colorado and Gila Rivers, California. 

 The large, slightly elevated, dorsal convexity of the thorax will readily distin- 

 guish this species. The head seems to be nearly smooth, and the anterior trans- 

 verse line is distinct ; the antennas are a little more than half as long as the body, 

 and their joints are rounded. 



5. L. n i t e n s, elongatus, depressus, testaceus, nitidus, glaber, thorace quad- 

 rato, lateribus fere rectis, obsoletissime parce punctulato, linea utrinque pro- 

 funda exarato, elytris subtilissime seriatim punctulatis, stria suturali postice 

 tenuiter impressa. Long. *0S *09. 



Abundant at the Colorado River, California. The head is finely and sparsely 

 punctulate, the vertex is slightly channelled, and the anterior transverse line is 

 deep ; in the male the head is as wide as the thorax, and the antennae are as 

 long as the body, with the first joint equal to the two following united. 



6. L. Z i in m e r m a n n i, elongatus, depressus, testaceus nitidus glaber, capite 

 thoraceque parce punctulatis, hoc latitudine fere longiore, lateribus rectis, angulis 

 anticis prominulis, linea utrinque profunda exarato, elytris subtiliter striato- 

 punctulatis, sulco laterali valde profundo. Long. -07 *09. 



Pennsylvania and Maryland, Mr. Zimmermann ; Illinois, Mr. Willcox. This 

 very small species is readily distinguished from the next by the finer punctua- 

 tion and the absence of the outer marginal line of the thorax. 



7. L. punctatus, elongatus, depressus, testaceus nitidus, glaber, capite 

 thoraceque sat dense punctatis, hoc latitudine paulo breviore, postice subangus- 

 tato lateribus fere rectis, lineis utrinque lateralibus duabus, elytris tenuiter 4 

 striatis et seriatim punctulatis, sulco laterali profundo. Long. *07. 



S. Carolina, Mr. Zimmermann. The small punctures of the elytra appear to be 

 near the striae, but not upon them, and form two series between the striae. The 

 antennae of the male are as long as the body, and the first joint is as long as the 

 head, or about equal to the three following united. The outer marginal line of 

 the thorax is not distinct. 



9. L. g e m i n a t u s, elongatus, depressus, rufo-testaceus, nitidus, glaber, 

 capite thoraceque densius punctatis, hoc latitudine non longiore, lateribus rectis, 

 postice non angustato, utrinque bistriato, elytris tenuiter striatis, striis punctu- 

 latis, sulco marginali profundo. Long. -C/6. 



Louisiana and Georgia, Dr. Schaum. The outer stria of the thorax is distinct, 

 but does not reach the base. The antennae of the female are two thirds as long, 

 those of the male almost as long as the body ; the first joint is equal to the two 

 following united in the female, and is a little longer in the male. This species 

 is very closely related to the last, but seems, by the difference in the form of the 

 thorax and by the differences in the antennae and elytra, to be properly sepa- 

 rated. 



10. L. mod est us, elongatus, depressus, testaceus nitidus, glaber, capite 

 thoraceque parcius punctatis, hoc quadrato, lateribus antice rotundatis, postice 

 subangustato, linea laterali profunda utrinque notato, elytris striis minus impres- 

 sis distincte punctatis. Long. -08. 



CucKJus modesties Say, Journ. Acad. Nat. Sc. 5, 268. 



Lcemophlceus suigularis White, Brit. Mus. Cat. 7, (1851.) 



Georgia and South Carolina. The antennae of the male are a little longer 

 than the body, and the elytra are shorter than in the female. The first joint of 

 the antennae in both sexes is as long as the two following united. 



11. L. puberulus, elongatus, depressus, testaceus, nitidus sat dense sub- 

 tiliter pubescens, thorace quadrato, latitudine subbreviore lateribus fere rectis, 



