TARPELA. 309 
37. Tarpela silvicola, (Tab. XIII. fig. 16, 3.) 
Oblong ovate, rather convex, subparallel, very shining, metallic greenish-bronze, with green or cupreous 
reflections. Head broad, shallowly transversely impressed in front, somewhat coarsely and rather closely 
punctured, the punctures here and there confluent on each side before the eyes, the intraocular space and 
the vertex smoother, the epistoma truncate in front; antenne long, about reaching to the middle of the 
elytra in the male, joints 8-10 long and subtriangular though scarcely wider than those preceding, the 
apical joint one third longer than the tenth, dark reddish-ferruginous; prothorax transverse, rather 
convex, strongly margined, the margins somewhat broadly grooved within, the sides a little rounded 
about the middle, slightly narrowing and sinuate before the prominent subrectangular hind angles, and 
obliquely converging in front, the apex broadly but not deeply emarginate, the anterior angles broadly 
rounded, the base rather strongly bisinuate and very distinctly margined, the basal fover shallow, the 
disc with a long shallow transverse sinuous depression just before the. base, the surface moderately finely, 
diffusely, and subequally punctured (much more finely so than the head), the sides and a central line on the 
disc often suffused with golden-cupreous ; elytra long, subparallel, rather convex, finely and lightly striate, 
the strie with fine rather distantly placed elongate impressions, the impressions rather coarser and deeper 
towards the sides, the interstices flat and almost impunctate, a narrow oblique stripe from the shoulder to 
the apex and sometimes one or two of the outer interstices more or less suffused with golden-cupreous ; legs 
dark brownish-bronze, the tarsi lighter, the tibis rather closely punctured ; anterior tarsi in the male with 
the three basal joints a little dilated but decreasing in width outwardly, the fourth joint rather long ; 
beneath greenish-bronze, shining, very sparingly and finely punctured, the ventral segments 1-3 more 
closely punctured in the middle, longitudinally wrinkled, and similar in both sexes, the flanks of the 
prothorax finely strigose ; prosternum subhorizontal, subparallel, broadly and strongly produced, rather 
coarsely punctured at the sides; mesosternum declivous, rather deeply excavate. 
Length 8-113 millim. ; breadth 43-54 millim. (d 9.) 
Hab. Guatemata, Cerro Zunil 4000 to 5000 feet (Champion). 
Many examples. This species somewhat resembles T. cupreo-viridis ; it differs in 
having the upper surface much more shining; the elytra finely striate and more 
finely punctured, and with the interstices flatter; the prosternum broader, &c. From 
Nautes tinctus it is separated by its narrower form, longer and differently shaped 
thorax, more coarsely punctured head, differently shaped mesosternum, &c. In the 
male of 7. silvicola the anterior tarsi, though a little dilated, have the three basal 
joints decreasing in width outwardly ; and the ventral surface similar in both sexes. 
33. Tarpela fragilicornis. (Tab. XIII. fig. 17, ¢.) 
Oblong ovate, subparallel, depressed, bright greenish-bronze. Head short, strongly transversely impressed in 
: front, moderately coarsely and somewhat closely punctured ; antennze long and slender, reaching beyond the 
middle of the elytra (in the male), the joints comparatively very long, the apical one about one half as long 
again as the tenth, and slightly curved, fusco-ferruginous ; prothorax broad, transverse, a little expanded at 
the sides, the lateral margins thin and not reflexed and rather broadly grooved within, the sides rounded, 
widest in the middle, and almost equally narrowing before and behind (very little narrower at the apex 
than at the base), the anterior angles rounded and not prominent, the apex broadly and feebly emargi- 
nate, the hind angles very obtuse and almost rounded, the base feebly bisinuate but straight in the middle, 
the basal foves: very shallow, the disc flattened behind and shallowly impressed in the middle before the 
base, the surface finely and sparingly punctured, the punctures rather coarser at the sides and base ; 
scutellum broad, transverse ; elytra long, subparallel, strongly margined, the humeri broadly rounded 
but a little prominent in front, finely and lightly punctate-striate, the punctures closely placed, a little 
coarser outwardly, and finer and shallower behind, the interstices quite flat and very minutely punctured ; 
legs, including the tarsi, very long and slender, the tibie rather sparingly punctured, the femora much 
smoother; beneath not very shining, comparatively smooth, the ventral surface very shallowly and finely 
