Hymenopterenfauna von Paraguay. al 
Elaphroptera maculipennis GUER. 
Blaphroptera maculipennis GUER., in: Voy. Coquille, Zool., Vol. 2, p. 243, 
1830 (1839). 2. 
Thynnus plagiatus SMm., Cat. Hym. Brit. Mus., Vol. 7, p. 52, 1859. 2. 
This species varies according to locality. but the variation 
seems to be confined to colour. Zhymnus mystacinus Kuus taken by 
Dr. v. JHERING at Ypiranga in copula with Thynnus ornatus Kuuc 
has the wings flavo-hyaline with the fuscous mark at the apex less 
clearly defined, and the yellow spot on the mesonotum absent; this 
form has also been taken by E. D. Jones in Parana. All specimens 
I have seen have the ventral abdominal segments entirely black. 
Thynnus intermedius Kuus another form of the same species 
sent by Dr. v. IHuerıne from Säo Paulo (Campos do Jordäo), has the 
mesonotum of the male unspotted, the pronotum only bordered with 
yellow and the yellow on the median segment divided into two 
large spots. Kuuc does not appear to have described the male of 
intermedius. ] have not been able to dissect the male genitalia, but 
have no doubt that allthese forms are at the most subspecies of maculr- 
pennis; and even in the same locality the colour varies considerably. 
one male from Campos do Jordäo having the yellow on the median 
segment almost as extensive as in mystacinus. Myrmecoda varıa PERTY 
seemsto be another local form ofthe female, ifindeed it is not identical 
with ?ntermedius. If this should prove to be tne case the specific 
name has priority over GuErm’s and should be used, but I have 
not seen the type. 
Elaphroptera apicalis GUER. 
(Pl. FL2EGe216) 
Elaphroptera apicalis GUER., in: Voy. de la Coquille, Zool., Vol. 2, 
p. 244, 1830 (1839). 
A specimen in the collection from San Bernardino, Paraguay 
eorresponds well with GuERıN’s description except in the following 
details of colour: the cheeks bright yellow, narrowly continued on 
the posterior margin of the head and narrowly interrupted on the 
vertex, the yellow band on the anterior margin of the pronotum is 
not interrupted, there is no yellow line on the posterior margin of 
the mesonotum, the spot on the mesopleurae is very large, the spots 
on the median segment are broadly united in the middle, the spots 
on the abdominal segments are transverse, not triangular, the legs 
