158 CHARLES W. LENG. 



scarcely hairy. The locality where about thirty of this variety were 

 found by Dr. Van Dyke is far from any town in the heart of the 

 Sierra Nevada. It is closely allied to pusilla and comes very near 

 lunalonga, the type of which has kindly been loaned by Mr. Fuchs, 

 in its markings, but differs from it in color, in the form of the mid- 

 dle band, in size and in the form of its elytra. 



Rectilatera group. 



Thorax slightly flattened, subqiiadrate, alutaceous, uot granulate or rugose. 



rectilatera. 



€. rectilatera Chaud. Bull. Mosc, 1843, iv, 693; Schaupp, I.e., p. 97, pi. 3, 

 fig. 75 ; texana Lee, List, of Col. 

 Length 13-13.5 mm.=.52-.54 inch. 



Habitat. — Tex., Mex. 



Dark brown, beneath blue; elytral markings consist of five round 

 white dots, one humeral, three submarginal and one discal, the api 

 cal luuule represented by one of the submarginal dots. Head glab- 

 rous, very finely striate ; labrum one toothed ; thorax almost quad- 

 rate, alutaceous, scarcely a trace of the usual transverse rugse, a 

 slight fringe of hair on each side ; the impressions are shallow, 

 greenish at base; elytra not 'deeply punctate, row of subsutural 

 foveolse indistinct, serrulate at apex. Beneath, the palpi, pleurae, 

 coxse, legs, flanks of thorax and sides of abdomen are clothed with 

 white hair. 



"Abundant on river bars and sandy banks in southern Texas and 

 "swarming about road pools between Alice and Brownsville, June 

 " and July. I have very seldom seen any tiger beetles in such great 

 " swarms as this." ( Wickham). 



PUNCTULATA grOUp. 



Thorax subcylindrical, finely granulate; palpi pale at base; head bald, finely 

 striate in front; elytra densely punctate with a subsutural row of 

 unusually large foveolaj. 

 Form slender. 



Black or dark bronze above, thorax always a little more metallic, markings 



incomplete puuctuiata. 



Brilliant metallic green above, thorax darker var. niicaU!<». 



C. punctiilata Oliv., 1794, Ent., ii, 33, p. 27, pi. 3, fig. 37, a. b. ; Fab. Syst. El., 

 i, 241 ; Dej. Spec, i, 101 ; Say, Trans. Am. Phil. Soc, new ser., i, 420, 

 pi. 13, fig. 11; Herbst, x, 180, pi. 172, fig. 2; Gould, Bost. Jour. Nat. 



