326 PHYTOPHAGA.-——-SUPPLEMENT. 
Allied to 7. enea, but with the thorax nearly impunctate and the elytra much more 
strongly wrinkled. 
9, Trirrhabda semiviridis. (Tab. XLII. fig. 9.) 
Obscure testaceous, the antennz and tarsi fuscous; head rugose on the vertex ; thorax transversely depressed, 
sparingly punctured ; elytra obscure greenish, closely punctured, shining. 
Length 3 lines. 
Elongate, rather convex, parallel ; the head fulvous on the vertex, the latter closely rugose, the frontal 
tubercles well-developed, piceous, the lower portion of the face testaceous ; antennz extending beyond the 
middle of the elytra, black, the basal joints testaceous beneath, the fourth joint the longest, more than one- 
half longer than the third, the following joints gradually shortened; thorax transverse, the sides strongly 
rounded, the angles obtuse, the surface deeply obliquely depressed at the sides, finely and sparingly pune- 
tured; elytra very closely and finely punctured, and finely wrinkled, obscure greenish, rather shining ; 
underside and legs testaceous, the sides of the breast, the apex of the tibie, and the tarsi more or less 
fuscous. 
Hab. Guatemata, Quiche Mountains, Totonicapam (Champion). 
T. semiviridis may be known from its allies by the obscure greenish elytra, which are 
glabrous and have a varnished appearance. ‘Three specimens. 
10. Trirrhabda rugosa. (Tab. XLTII. fig. 10.) 
Fuscous, the antenne black; thorax coarsely punctured, sneous, narrowly margined with flavous ; elytra 
seneous, strongly rugose and closely punctured, the lateral margins obscure flavous; legs flavous, the outer 
edge of the femora, the tibie, aud tarsi piceous. 
Length 2 lines. 
Hab. Mexico, Xucumanatlan in Guerrero (H. H. Smith). 
Distinct from any of its congeners by the strongly rugose head, thorax, and elytra in 
connection with the eneous upper and the dark under surface. ‘Two specimens. 
11. Trirrhabda guatemalensis. 
Fulvous, the base of the head, the antenne, breast, and tarsi more or less piceous ; thorax transversely sulcate, 
strongly punctured; elytra pale greenish, grey, or fulvous, opaque, finely rugose, clothed with very short 
pubescence, 
Length 24-3 lines. 
Of rather robust and convex shape, the base of the head piceous or ‘fuscous, rugosely punctured, the lower 
portion pale fulvous, shining; antenne nearly extending to the apex of the elytra, piceous or black, 
shining, the joints elongate, the fourth longer than the third; thorax transverse, the sides strongly 
rounded, the angles obtuse, the surface deeply transversely sulcate, the sulcation not quite extending to 
the sides, strongly punctured, pale fulvous: scutellum fuscous; elytra slightly widened posteriorly, the 
entire surface finely rugose and clothed with scarcely perceptible pubescence. 
Hab. Guatemata, Duefias (Champion). 
T. guatemalensis varies greatly in the colour of the elytra; the latter are coria- 
ceous throughout, but more strongly so than in the other members of the genus from 
our region. ‘This character in connection with the unspotted thorax will assist in the 
recognition of the present species. Many specimens. 
