70 GEORGE H. HORN, M. D. 



This species has been redescribed as C. irregidare, by Mr. Walker, 

 Naturalist iu British Columbia, Lord, Vol. II., p. 312. 



Callisthenes pimeliiodes, Walker, loc. c{t.=^Calosoma luxaium, Say, var. Zim- 

 ■niermanni, Lee. 



Very many specimens of the varieties of luxatiim forming a fine 

 series, are known to me. The form named by Walker is probably 

 that in which the tuberculiforra elevations of the elytra are more 

 prominent ; the variety bus been known to us for many years. 



C. latipenne, n. sp. 



Allied so liixatuni Say, but differs from all the races of that species 

 in having a proportionately smaller head, broader thorax with more 

 rounded sides and more broadly reflexed margin, apex less deeply 

 cmarginate, basal' angles more broadly rounded ; elytra more broadly 

 oval, marginal , groove deeper from the more strongly reflexed 

 margin. 



Color black and shining, head sculptured as in the smooth forms o{ luxatitm ; 

 thorax moderately convex, disc smooth with the median line distinct, with 

 the sides coarsely punctured and wrinkled. Elytra broadly oval, smooth and 

 fshining, disc with approximate striiB of very fine punctures, margin 

 broad as compared with luxaium and equal in its entire length except at base 

 where it is narrower, rather densely muricately punctured and iu well pre- 

 served si:)ecimeus of a greenish bronze color. Under surface and legs black 

 itnd shining, almost entirely smooth and impuuctured. Length. 54 — .68 inch ; 

 14 — .17 mm. 



In most of the specimens before me the margins of the elytra im- 

 mediately behind the humeri have three or four very distinct serra- 

 tions. This character is quite common in the species of the triste 

 group, but not seen in any of our species of the group Callisthenes. 



On comparison the male of this species is found to be as broad as 

 the female of disco rs Lee, the elytral margin broader and the surface 

 sculpture of a different order. 



Collected by Mr. Wm. M. Gabb and myself, in the elevated regions of 

 the South Sierras of California. 



Calosoma peregrinator, Guerin. Ecv. Zool, 1S44, p. 255. 



This is probably identical with and has priority over prominens Lee. 

 {angxdatum || Lee). 



Carabus gladiator, Motsch.=^C. tcedatus Fabr., var. baccivorus Fisch. 



C. hudsonicus, Motsch.= ? C. tnaeander, Lap. 



C. tatumi, Motsch.;=C. serratus, Lap. 



The three species above noted are described by Motschulsky in 

 Bull. Imp. Soc. Nat. Moscou, 1865, pp. 285 and 293. 



Diachila subpolaris, Lee. New. Spec. p. 2, 1303. =D. aniericana Motsch. Eull. 

 INIosc. 1804, iii, p. l'J5. 



