J 855.] 30 



^ 



22. C. rufula, elongata, parum convexa rufo-testacea, thorace latitudine 

 breviore lateribus rotundatis basi late rotundatis, angulis posticis obtusis, con- 

 fertim punctato, postice arcuatim impresso, elytris elongato-ovalibus seriatim 

 punctatis, interstitiis laevibus seriatim longius pilosis. Lung. -06. 



San Jose and San Diego, California : this species recalls by its form C. serri- 

 collis, &c, among those just described, but the sides of the thorax are not serrate, 

 and the sculpture of the elytra is very different. 



Species unknown to me. 



23. C. octodentata Mann. Germ. Zeitschr. 5, 65. Latridius octodentatus 

 Say, Jour. Acad. Nat. Sc, 5, 325. Nebraska Territory. 



24. C. p u s i 1 1 a Mann. Germ. Zeitschr. 5, 48 (excl. synon.) California. 



25. C. t ri s ig n a t a Mann. Bull. Mosc. 1852,361. Russian America. 



26. C. spinulosa Mann. Bull. Mosc. 1852, 361. Russian America. 



B. Antennae articulis 9 11 sensim maioribus. 



27. C. picta, elongata testacea glabra, thorace latitudine breviore sub- 

 quadrato, angulis rotundatis, parce punctulato haud impresso, elytris thorace 

 latioribus oblongo-ovalibus subtiliter seriatim punctulatis, interstitiis omnium 

 subtilissime alutaceis, fascia transversa ad medium apicequepiceis, antennarum 

 articulis tribus ultimis picels. Long. -05. 



Middle and Southern States : rare. Varies in having the elytra piceous, with 

 two large testaceous rounded spots on each, one behind the base and the other 

 behind the middle. The 9th joint of the antennae is hardly larger than the 8th, 

 which, together with the absence of pubescence, gives to the insect a peculiar 

 appearance, and suggests even the establishment of a separate genus for its re- 

 ception. 



In the next species, however, the external appearance of the ordinary species 

 of Corticaria is resumed, though the antennas are as in the present one. 



28. C. simplex, longiuscula testacea, tenuiter pubescens, thorace latitu- 

 dine breviore subquadrato, angulis rotundatis, parce punctulato, postice obso- 

 lete transversim impresso, elytris oblongo-ovalibus, tenuiter seriatim punctula- 

 tis et breviter seriatim pilosis. Long. -05. 



One specimen found at the Colorado River in California. The hairs of the 

 elytra are precisely as in the many species of the division A, but the punctures 

 of the normal striae are very small, hardly larger, in fact, than those of the in- 

 terstices. The elytra and the club of the antennae are somewhat fuscous. 



Lathridius Herbst. 



A. Antennae articulo 9no 8vo maiore : (thorax bicarinatus). 



1. L. sculptilis, elongatus, opacus rufo-testaceus, thorace latitudine 

 longiore, pone medium maxime constricto, antice trifoveato dorso subtiliter bi- 

 carinato, carinis integris fere parallelis, antice utrinque carinula brevi externa 

 notato, elytris thorace sesqui latioribus punctis quadratis, postice minoribus 

 seriatis, interstitiis utrinque tribus paulo elevatis subcarinatis. Long. -045. 



Southern Illinois, Prof. Haldeman. Seems related to L. carinatus and other 

 European and Siberian species, but the small anterior elevated line outside of 

 the dorsal carinas is not mentioned in any of the descriptions; it runs from the 

 large external anterior fovea to the posterior constriction, and though fine is 

 quite distinct; the two dorsal carinas are parallel anteriorly, and between them 

 is eeen an oval fovea : towards the base they converge, and are continued 

 through the transverse impression. 



B. Antennae articulis 8 et 9 subaequalibu3. 

 * Thorax bicarinatus. 



2. L. costicollis, testaceo-piceus, capite thoracequefere scabris, illo ca 

 naliculato latitudine parum longiore, lateribus concavis, postice constrioto ? 



