1967] 
Mickel — - Mutillidae 
235 
Chile. It may be that the genus Eotilla is limited to Chile and that 
the genus Prototilla is limited to the Argentine Republic, but there 
is no factual evidence to support this view and the evidence from 
the geographical distribution of other Chilean and Argentine insects 
suggests that either genus could have a wider distribution than the 
country of the type locality. 
Alternative ( 1 ) appears to be preferable to the others because it 
seems the most likely, considering available evidence, and if it should 
prove incorrect the nomenclatorial changes necessary would not be 
of major import. 
Eotilla mickeli Schuster. 
Eotilla mickeli Schuster, Ent. Amer. (n.s.), 29: 77-80, PI. xii, figs. 1-5, 
PI. xiii, figs. 6-11, PI. xiv, fig. 17, PI. xv, figs. 18 and 19, $. 1949 
Female. Black, except antennae, mandibles, trochanters, anterior 
third of front, and pronotum, stramineous to castaneous; vestiture 
consisting of black subplumose setae and waxy-white plumose scales 
as described and figured by Schuster for the males; antennae 12-seg- 
mented ; labial palpi 4-segmented, maxillary palpi 6-segmented; eyes 
ovate, strongly facetted; thorax tripartite, superficially bipartite, the 
mesonotum very narrow, inconspicuous, transverse, but visible ; felt 
lines of second tergum present, but narrow and inconspicuous, ap- 
proximately half the length of the tergum. Length, 4.5 mm. 
Head wider than the thorax, one and one-third the width of the 
pronotum anteriorly; mandibles falcate, simple, slender, edentate at 
the tip and with a small tooth within near the tip ; proximal half of 
mandibles stramineous, the distal half castaneous; clypeus small, con- 
vex, its anterior margin entire, straight, clothed with black setae and 
waxy-white scales; antennal tubercles simple; scape terete, slightly 
arcuate, without carinae beneath, slightly longer than the pedicel, 
the latter slightly longer than the first flagellar segment; scape and 
pedicel testaceous, the flagellum somewhat infuscated and darker; 
front and vertex, except the posterior margin of the latter, clothed 
throughout with sparse black setae, and waxy-white scales, the latter 
close and largely obscuring the sculpture of the integument, which 
appears to be finely granulose. 
Pronotum narrowed from front to rear, the anterior margin one 
and one-half times the width of the posterior margin, weakly, finely 
granulose, clothed with sparse black setae and with separated waxy- 
white scales at the anterior margin, and a few scattered ones along 
the lateral margins; mesonotum narrow, transverse, inconspicuous; 
propodeum wider than the mesonotum, thus the thorax appearing 
