L(>]ujicorni(i of Mexico and Ccntyal America. 115 



of the elytra (so unlike the smootli, subopaque, silky 

 gloss of 2). loiKjicorniH), and in the shming head, thorax, 

 and base of antennae, the thorax having onl_y a few coarse 

 punctured wrinkles. The eyes are not nearly so closely 

 ap})roximated above. As in I), lomiicoruis, the thorax 

 has three long and acute spines on each side, and the 

 elytra are acutely spmed at the sutural angle, but the 

 sjiine is followed by a short sinuation of the apical mar- 

 gin, which is not the case in D. lo/nficoniis. 



Derohrachus (jeminatus, Leconte, Proc. Ac. Phil, vi., 

 p. 233 (1853); Col. of Kansas and E. New 

 Mexico, p. 19, t. 2, figg. 12 and Via; Bates, 

 Biol. Centr.-Amer., Col., v., p. 231. 



Additional specimens of this species have been received 

 from Villa Lerdo in Durango, and Chihuahua City 

 {Ho(je). The few examples of the ^ from Villa Lerdo 

 resemble D.forreri (Bates) in the antennal joints 3 — 5 

 being longer and narrower than in Texas and Arizona 

 specimens of D. (leminatus, but the eyes are wide apart 

 above as in that species, and not approximated as in J). 

 forreii. The single specimen from Chihuahua is, how- 

 ever, in many respects intermediate between the two 

 species. 



Sfrovgijlaspis lohulifer, n. sp. 



S. scobijiato affinis; major, rufo-testaccus oi^acus, dense breviter 

 f^'riseo-pubescens ; Ihorace angulis anticis breviter lobato-productis, 

 disco convexo mi mis inieijiiali. Loug. 47 millim., $. 



Ilah. Mexico, Atoyac in Vera Cruz (//. II. Smith). 



I have seen but one example of this distinct species, 

 and the prominent outstanding anterior angles of the 

 thorax may prove to be only an individual peculiarity ; 

 but they are exactly symmetrical, the sides are deeply 

 sinuated immediately behind them, and then more 

 rapidly and curvilinearly diverging to the lateral tooth 

 near the hind angle, the acute apex of which is curved, 

 and points towards the elytral humeri ; the surface is 

 granulated. The elytra are finely and densely granu- 

 late-punctulate, but posteriorly appear nearly smooth. 

 The antenuie in the c? are nearly as long as the body, 

 with the basal joints (1 — 3) much more strongly 

 asperatc-granulate than in ^S'. scohiiiatus. 



