TRIRRHABDA. 325: 
latter with three spots, greenish; elytra finely rugose, bluish, eneous, or purplish, the disc with some 
obsolete longitudinal ridges, the lateral and apical margins flavous. 
Length 23-3 lines. 
Hab. Mexico, Amula, Chilpancingo, Omilteme, Xucumanatlan, all in Guerrero 
(H. H. Smith). 
T. vicina is very closely allied to 7. variabilis, and is equally variable as regards the 
colour of the elytra; it differs from it in the following particulars :—The antenne are 
less robust, the thorax is much more strongly (almost rugosely) and closely punctured, 
and the elytra are more distinctly rugose (in 7. variabilis they are extremely finely 
coriaceous), and have three or four obsolete (sometimes more distinctly marked) 
longitudinal ridges. In some specimens the spots on the thorax are confluent. The 
elytra are similarly pubescent in both species. Numerous examples. 
1(s). Trirrhabda hogei, (Tab. XLIII. fig, 8.) 
Pale fulvous; the head and thorax sparingly punctured, the latter with two impressions; elytra green, finely 
rugose and pubescent. 
Length 44 lines. 
Of broad and robust shape; the head with a few punctures on each side, the vertex impunctate; antennex 
extending to the middle of the elytra, fulvous, slender, the fourth joint longer than the third or fifth ; 
thorax more than twice as broad as long, the sides strongly rounded and widened at the middle, the 
surface deeply transversely depressed, irregularly and sparingly punctured ; scutellum fulvous; elytra 
clothed with very short pale fulvous pubescence, light green, finely rugose, with a rather broad and well- 
marked lateral margin, the epipleare indistinct below the middle; underside and legs fulvous ; the last 
abdominal segment of the male with a deep triangular emargination, that of the female much less strongly 
emarginate. 
Hab. Mexico, Acapulco in Guerrero (H6ge). 
A large, robust species, with entirely green elytra and an unspotted thorax. Many 
specimens. 
2(a). Trirrhabda sublevicollis. (Tab. XLIII. fig. 7.) 
Flavous, the antenne black ; the thorax with three blackish spots, nearly impunctate ; elyira obscure purplish 
or eneous, with the lateral margins flavous, the disc finely punctured, the interspaces strongly transversely 
rugose or wrinkled. 
Length 3 lines. . 
Head with afew fine punctures on the vertex, the latter aneous or purplish, the lower portion of the face 
. flavous; antenn extending beyond the middle of the elytra, black, the fourth joint one-half longer than 
the third; thorax transverse, the sides but little rounded at the middle, the disc with a deep transverse 
depression, which is sometimes interrupted in the centre, the surface with only a few fine irregularly 
distributed punctures, flavous, with a spot on each side and a median stripe blackish; scutellum smooth, 
black; elytra glabrous, dark metallic purplish, finely punctured, and rather strongly rugore throughout, 
the lateral and apical margins flavous ; legs flavous, the upper edge of the femora and the tibiz and tarsi 
piceous or black. 
‘ 
Hab. Mexico, Omilteme, Xautipa, and Chilpancingo, all in Guerrero (Hl. H. 
Smith). 
