302 HETEROMERA. 
2. Upper surface shining, metallic bronze or greenish-bronze, rarely (T. depressa) 
brownish-piceous ; prothorax more strongly margined, the margins often a little 
expanded or grooved within; epipleure abbreviated. 
* Anterior tarsi with the three basal joints rather wide; a little dilated in the male. 
26. Tarpela cupreo-viridis. (Tab. XIII. fig. 9, ¢.) 
Tarpela cupreo-viridis, Allard, Mittheil. der schweiz. ent. Ges. v. pp. 57 & 240°. 
Hab. Guaremata, El Tumbador 2000 to 3000 feet (Champion) ; Nicaraaua (Salié), 
Chontales (colls. F. Bates & Haag1; Janson, Belt). 
Four examples captured by myself on the Guatemalan Pacific slope agree well with 
the long series of Nicaraguan specimens before me. The male of this species, as noted 
by Allard, has a longitudinal band of pubescence along the middle of the ventral 
surface; the ventral segments 1-3 are also closely and finely punctured. The pro- 
sternum is a little declivous, and then subacuminately produced. 
27. Tarpela marginicollis. 
Oblong ovate, subparallel, brownish-bronze, the head and prothorax sometimes slightly tinged with green, 
rather dull. Head very shallowly transversely impressed in front, rather coarsely, somewhat closely, and 
subequally punctured, a transverse space on the vertex almost impunctate, the epistoma broadly but 
distinctly emarginate ; antenne rather long, reaching to one third of the length of the elytra in the male, 
joints 8-10 long though decreasing slightly in length, the apical joint as long as the ninth, brownish or 
piceous ; prothorax broader than long, strongly margined, the margins thickened and grooved within, 
the sides narrowing and feebly sinuate before the middle, and more or less distinctly sinuate and 
scarcely narrowing behind, the anterior angles broadly produced and narrowly rounded, the hind angles 
subrectangular, the base bisinuate and distinctly margined, the basal fovese small but very distinct, 
the disc with a shallow sinuous transverse impression (more deeply impressed outwardly) before the 
base, the surface finely (or somewhat coarsely) but not very closely, the disc sometimes more sparingly, 
punctured; elytra not very convex, wider than the prothorax, long, subparallel, with rows of closely- 
placed rather fine or moderately coarse punctures, the punctures rarely here and there confluent, and 
becoming coarser outwardly and finer and shallower towards the apex, the interstices flat on the disc, 
regularly but very feebly convex outwardly, very shallowly, finely, and sparingly punctured, and the 
third and the seventh sometimes slightly raised and confluent just before the apex, unicolorous brownish- 
bronze, sometimes slightly cupreous in tint; beneath shining, dark bronze, rather closely and somewhat 
coarsely punctured, the ventral segments 1-3 also longitudinally wrinkled, the flanks of the prothorax 
shallowly strigose ; the ventral surface in the male closely and more finely punctured along the middle, 
the segments 1 and 2 flattened and still more closely punctured and pubescent in the centre, aud the last 
segment also pubescent in the middle; legs blackish-bronze, the tarsi lighter, the tibize closely and coarsely » 
punctured, and with the outer apical angles of the anterior pair comparatively strongly produced; 
prosternum declivous, convexly produced ; mesosternum broad, moderately deeply excavate, the raised 
sides more or less rounded off in front. 
Length 11-15 millim.; breadth 43-7 millim. (¢ 2.) 
Hab. Guatemaa, El Tumbador, Cerro Zunil, Volcan de Atitlan (Champion). 
Numerous examples of both sexes. This species is allied to 7. cupreo-viridis, but 
duller; the thorax is not so strongly transverse, less narrowed in front, and not so 
