Hymenopterenfauna von Paraguay. 201 
a transverse band close to the apex and a large spot on each side 
of the second, third and fourth dorsal and of the second and third 
ventral segments yellow; a yellow line on the anterior femora 
beneath; the spines of the tibiae and tarsi pale ferruginous. Wings 
hyaline, tinged with yellow, clouded in the radial cell, neryures 
fuscous, the stigma ferruginous. 
Length 17 mm. 
Hab. Tucuman, N. Argentina (StEissacH). March. 
This approaches the Zateralis group, but the elypeus is produced 
and narrower at the apex, and the mandibles rather less broadened 
than in most species of the group, which is represented in the same 
locality by E. avida Turn. It is rather nearly allied to scutellaris 
Kıve. 
EBlaphroptera lateralis Kıuc. 
Thynnus lateraıs KLuG, in: Physik. Abh. Akad. Wiss. Berlin, p. 34, 
1840 (1842), 2. 
Hab. Estacäo de Rincäo, Säo Paulo (v. JHERING). 
Thynnus celitellatus KuuG is almost certainly the female of this 
species, being close to the females taken with nearly related males 
in Bolivia and Argentina. 
Elaphroptera cornuta GUER. 
Elaphroptera cornuta GUER., in: Voy. Coquille Zool., Vol. 2, p. 243, 1830 
(1839), &. 
Hab. Rio Grande do Sul (v. IuErıng). 
This is close to the lateralis group. 
Elaphroptera avida Turs. 
(Pl: TI, Bier 1) 
Elaphroptera avida TURN., in: Trans. entomol. Soc. London, p. 73, 1908. 4. 
d. A long series of males show considerable variation in the 
yellow marks on the median segment, which in one specimen are 
entirely absent, but never joined in the middle; the yellow spot on 
the scutellum is also variable in size and sometimes divided. 
9. Clypeus very short, broadly emarginate at the apex, finely 
and closely punctured. Mandibles long and stout, not bidentate, 
shining, with a broad groove on the basal half, a fringe of golden 
Zool. Jahrb. XXIX. Abt. f. Syst. 14 
