ART. 28 REVISION OF DISONYCHA NORTH OF MEXICO BLAKE 61 



Type locality. — Texas (as here restricted). 



DistHhution.—TQx^s, (Beeville, Brownsville, Corpus Christi, Har- 

 lingen, New Braunfels, San Diego, Sliarpsburg) ; California (San 

 Diego) ; Lower California (Santa Rosa, San Felipe). 



Food plants. — Opuntia leptocaulis and O. arhorescens (Hunter, 

 Pratt, Mitchell) . 



Remarks. — D. varicornis is unlike any North American Dlsonycha 

 in the shape of its prothorax. The broadened apical angle of the 

 explanate margin and the notching behind the angle on tlie margin, 

 together with the varicolored antennae, are distinguishing charac- 

 ters for this species. It is closely related to D. mexicana, Jacoby, 

 which has a similarly shaped prothorax but has entirely brown 

 antennae with the third antennal joint much shorter than the fourth. 

 The legs of mexicana are paler, and the aedeag-us quite unlike that of 

 varicornis. 



30. DISONYCHA FUNEREA (Randall) 



Plai-e 6, Figure 35 



Haltica funerea Randall, Boston Jouru. Nat. Hist., vol. 2, p. 47, 1838 (Canton, 



Mass. ; type lost). 

 Disonycha funerea Crotch, Proc. Acad. Nat. Sci. PhiUulelpliia, vol. 25, p. 64, 



1873.— Horn, Trans. Amer. Ent. Soc, vol. 16, p. 208, 1889. 



Description. — Elongate oval, entirely lusterless black excej)t the 

 last 2 or 3 ventral segments, which are more or less pale yellow; 

 antennae short and heavy. Head with the interocuiar space over 

 half width of head; interantennal area not carinate, but flat and 

 broad; tubercles rather indefinitely marked; surface dull black, dis- 

 tinctly alutaceous with a few scattered punctures on each side about 

 fovea near eye. Antennae black, not extending much below humeri, 

 third and fourth joints subequal with fourth slightly longer, 

 remainder a little shorter, all nearly as broad as long. Prothorax 

 scarcely twice as broad as long, convex, somewhat narrowed ante- 

 riorly with sides nearly straight; surface entirely dark, lusterless, 

 distinctly alutaceous, with fine and moderately dense punctation. 

 Scutellum black. Elytra elongate oval without humeral promi- 

 nences, convex ; surface entirely lusterless black, distinctly alutaceous, 

 finely punctate. Body beneath alutaceous, nearly glabrous, dark 

 except the last 2 or 3 ventral segments, which are either entirely 

 pale or with pale margins, the last segment being entirely pale; 

 legs black. Length, 6 to 6.8 mm; width, 2.8 to 3.5 mm. 



Type locality. — Canton, Mass. 



Distribution. — Massachusetts (Brighton, Sherborn, Wellesley) ; 

 Connecticut (Old Lyme) ; Georgia (Thomas County) ; Alabama 

 (Mobile). 



