Hymenopterenfauna von Paraguay. 223 
Length 10—11 mm. 
Hab. San Bernardino, Paraguay (Fırskic). 3 specimens. 
Almost certainly a geographical race of P. albosignata BuRrM. 
It is much smaller, the marks on the head and thorax are yellow 
and the bands on the abdomen are continuous. I have not seen typical 
specimens of albosignata, but in Mendoza specimens the pronotum 
is much more sparsely punetured than in the present form, and the 
pygidium distincetly broader. 
The male which I associate with this species agrees very closely 
with those taken by JENSEn-HAARUP at Mendoza, but differs somewhat 
from the typical form, the second recurrent nervure being received 
close to the base of the third cubital cell, instead of at the apex 
of the second, but in Mendoza specimens this nervure is usually 
interstitial with the second transverse cubital nervure; there are 
two small round yellow spots close together at the base of the median 
segment, and a minute yellow spot which is present on the vertex 
in Mendoza specimens is absent in all from Paraguay. The spines 
on the apical dorsal segment at the angles of the emargination are 
long and not very close together, the dorsal surface of the segment 
flattened, shining with a few scattered punctures. 
Hab. Asuncion, Paraguay (Anısırs). December to April. 6 
specimens. 
Plesia bonariensis BUurRM. 
Female specimens from Mendoza (JENsEn-HAARUP) differ from 
tie typical form in having the wings more strongly suffused with 
fulvous, especially along the costa, the antennae usually black and 
the yellow marks on the anterior angles of the pronotum usually, but 
not always, absent; the pronotum is also more strongly punctured. 
This form approaches very closely to Myzine agilis Sm. but that 
species is larger, has the wings darker and the antennae ferruginous, 
the yellow marks on the second abdominal segment are also reduced 
in size. As I have only seen the type of ag:ilks I am inclined to 
look on it as merely a large variety of the form collected in large 
numbers by JENSEN-HAARUP, but I may be mistaken. P. argentina 
SAuss. is almost certainly a synonym of bonmariensis. The locality 
Nicaragua given in SmıtH’s description for agılis is erroneous. The 
male of agzilis as described by SmitH appears to me to be identical 
with cuyana Burm. specimens of which occur in JENSEN-HAARrUP's 
collection. In the same collection are numerous examples of a male 
