220 [December, 



46. S. rugosa and flavicollis Hald. do not belong to Scraptia; but 1 

 cannot find any genus in which they may be placed ; they appear rather related 

 to some Tenebrionides, than to Melandryades. 



47. Anaspis 4-p unctata Say, Journ. Acad. 3, 276, is a true Mordella. 



48. Anaspis ventralis Mels. seems to be a variety of A . rufa Say, Journ. 

 Acad. 5, 244. A. filiformis Lee. Agassiz' Lake Superior 231, is the male 

 of the same. 



49. Anthobates Lee. (Lac. Sup. 231) must be reunited with Anaspis ; the 

 character upon which I separated it is entirely false ; nor can I account for such 

 an error of observation. 



50. Lytta fulgifer Lee. is merely a dark colored variety of L. N u t a 1 1 i Say. 



51. Eugnathus|| Lee. Trans Am. Phil. Soc. (10, 375,) a genus allied to Pana- 

 gseus, must be changed to M i c r i x y s. The name Eugnathus has been already 

 twice used in the order of Coleoptera. 



Descriptions of new Coleoptera collected by Thos. II. Webb, 31. D., in the years 1850-51 

 and 52, while Secretary to the U. S. and Mexican Boundary Commission. 



By John L. Le Conte, M. D. 



Most of the species collected by Dr. Webb, have been already described by 

 me from other sources, but the remaining nondescripts contain a comparatively 

 greater number of large and beautiful species than any other collection yet ob- 

 tained. The localities are mostly given within limits. 



Cicindela prae tex tat a, longiuscula, subtus viridi-amea, abdominis lateri- 

 bus albo-pilosis, supra fusco-cuprea, opaca ; labro albo transversim quadrato, an- 

 tice subtiliter tridentato, fronte utrinque subtiliter striato, thorace lateribus ro- 

 tundatis albo-pilosis, latitudine haud longiore modice convexo, impressionibus 

 tran3versis profundis ; elytris thorace sesqui latioribus modice convexis, limbo 

 latiusculo albo, intus obtuse dentato, fascia intermedia obliqua longiuscula recta, 

 subtilius haud profunde punctatis : palpis sexus utriusque testaceis, articulo 

 ultimo ceneo. LoDg. *45 -6. 



"San Diego to El Paso." By a figure kindly sent me by Prof. Lacordaire, 

 this species seems somewhat related to C. circumpicta,yet the prolonged oblique 

 band of the elytra, as well as the thorax, which is not brilliant and not deeply 

 sulcate, will distinguish it. The species here described appears in general more 

 related to C. generosa, formosa, &c, but is more elongated in form. The apex of 

 the elytra is not at all serrate, and in the female each is considerably rounded, 

 while in the male they are conjointly rounded and the little tooth of the suture 

 ia more obvious. 



Two males found on the " San Diego trip," differ from the type by the more 

 brilliant coppery color of the upper surface, the more distinct punctures of the 

 elytra, and by the middle band of the elytra being gradually dilated internally 

 and truncate, while in the type it is rounded at tip, and not dilated. 



Cicindela lemniscata, elongata cylindrica subtus viridicenea, abdominis 

 lateribus albo-pilosis, supra, cuprea; labro alborotundato, subtridentato, fronte 

 concavo, utrinque striato viridi-micante, antennis nigris, thorace jrugoso, cylin- 

 drico, lateribus albo-pilosis vix rotundatis, impressionibus transversis profundis, 

 disco medio purpureo, elytris thorace vix sesqui latioribus, parallelisapice oblique 

 rotundatis, densius fortiter punctatis, vitta utrinque discoidali integra alba pone 

 medium intus obtuse bidentata, et apicem ad suturam ambiente : pedibus palpis- 

 que testaceis, his apice seneis. Long. *31. 



" San Diego trip," one male. This small and slender species is the only North 

 American one known to me in which the elytra are ornamented with a vitta 

 equally remote from the suture and margin : the outline of the vitta is straight, 



