1854.] 79 



acus, but the size of the eyes and the form of the thorax are very different. I 

 retain for it the name which appears in Dejean's Catalogue. 



Nemicelus marginipennis, linearis, valde elongatus et depressus, pallide 

 testaceus nitidus, capite cum oculis ma<rnis thorace latiore, hoc latitudine fere 

 duplo loniiiore, lateribus antice rotundatis, postice subsinuatis, pone medium an- 

 gustato, disco punctulato, fovea utrinque prope basin profunda impresso, elytris 

 punctulatis vix striatis, margine laterali nigricante, apice truncatis. Long. *20. 



Georgia. The antennae are longer than the head and thorax, with turbinate 

 joints, gradually increasing in size ; the first joint is thickened, and is longer 

 than the two following united. The last joint of the maxillary palpi is larger 

 than the penultimate and apparently acute at tip. The angles of the thorax are 

 all rounded ; the posterior foveae are oblong, slightly oblique, and about as far 

 from the sides as from the base. 



Notice of some Coleopterous Insects, from the Collections of the Mexican Boun- 

 dary Commission. 



By John L. Le Conte, M. D. 



This paper includes descriptions of some new species contained in collections 

 received from the Boundary Commission immediately before the completion of 

 the survey, and with the collections previously made by the active and enter- 

 prising naturalists attached to the expedition, will enable a moderately full 

 Coleopterous Fauna of the lower Rio Grande to be prepared. 



Of the species noted below, some were collected between Laredo and Ring- 

 cold barracks, by Messrs. Schott and Weise, under the command of Major Emory. 

 Those from Frontera, Rio Grande, were collected by Mr. J. D. Clark, under Major 

 Graham : a few others were obtained by Mr. Clark at San Antonio, in Texas. 

 Some very interesting species from Fort Union, New Mexico, collected by Major 

 Sibley, are also added, although not belonging properly to the Boundary fauna: 

 and one from Dr. Cooper's collection in Oregon, which was omitted in my de- 

 scription of his species. 



Cicindela punc tul ata and albohir ta. Frontera; Mr. Clark. 



Cicindela 16-punctata Klug. Jahrb. 32. Frontera; Mr. Clark. This 

 species resembles very closely C. Hentzii, nor does there appear in Klug's de- 

 scription any character which would separate it from that species. The law of 

 representative forms is abundantly exemplified in the species of this genus, and 

 much careful investigation will be necessary to determine what are well defined 

 limits of the species. 



C. bland a? A species closely resembling this was also found by Mr. Clark 

 at Frontera. 



Pasimachus costifer, niger, nitidus; thoracis elytrisque marginibus cyanes- 

 centibus, illo postice angustato, lateribus postice sinuatis angulis posticis rectis, 

 his modice convexis, laevibus, carina humerali postice obsolete continuata, cos- 

 taque submarginali acuta utrinque paulo abbreviata ornatis : antennarum arti- 

 culis 2 et 3 compressis. Long 1-05 1-2. 



Dr. Weise, Laredo to Ringgold Barracks. This species has the same form 

 as P. depressus and pnnctulatus, but the sharply elevated costa between the 

 margin and the obsoletely prolonged humeral carina will readily distinguish it, 

 The mandibles are slightly rugous. 



Harpalus i m p i ge r, niger, nitidus, elongatus, thorace latitudine paulo bre- 

 viore, paulo convexo, postice angustato, lateribus rotundatis, angustemarginatis, 

 basi subemarginata punctulata, utrinque subimpressa, angulis posticis obtusis 

 non rotundatis, elytris thorace vix latioribus, profunde striatis, unipunctatis, apice 

 sinuatis, antennis palpis pedibusque ferrugineis. Long. '52 G5. 



Santa Fe, New Mexico, Mr. Fendler : Frontera, Mr. Clark. This species is 

 comparatively almost as elongated as H. erraticus, but the thorax is more 



