SCHROTTKY | SOUTH AMERICAN HYMENOPTERA 27,2 
species of Prosopis described by Vachal in Ann. Soc. Ent. France, 
IQOI, pp. 79-82, but after comparing the descriptions, I do not be- 
lieve any of them are identical with those described above. For the 
convenience of students, I give a table of the Vachalian species, using 
the characters employed in Mr. Schrottky’s table as far as possible. 
I also include a lately-described Mexican species. 
Scutellum nearly all yellow; first abdominal segment not ferruginous; legs 
Ago MMC NOUS aren Starts Rape yee Auerc.cet artic creeper isesterts alsa ou aieepenarai babes i rei eouad woe ie 
Scutellum black, with at most a yellow spot on each side................ 2 
1. Mesopleurae and mesosternum sparsely punctured (Bolivia) 
; scrobicauda, Vach. 9. 
Mesopleurae and mesosternum densely punctured (Peru) 
aspricollis, Vach. . 
Deaeveilows spotsatseach side Of Scufellismirs. oc a. sa e canic clean cle elles ee ees By 
Nomsuchispotsnscitellumyallmblackan. eee accents co alams eaten croak 4s 
3. Mandibles red or reddish (Goyas, Brazil)............... arsenica, Vach. 9. 
Micathiiies yellow (PEL). << sciecd «oda oes ma klewiee « oeduae cribellata, Vach. &. 
1 SCI DeTESy aia llKO ap ena eles Riptama ds ea Ben Baan cees & aac Bren ois iat nia raat GNA | aie 5: 
Sides of clypeus black, the face having three yellow vittae. oe 226: 
Eoeiithe. tipiae yellow (Mexico). .0...2..06%-c ce eaeee 08 naa. Ckll. 3. 
Hind tibiae black, with a yellow basal annulus (Bolivia) .palmaris, Vach. &. 
6. Radial cell broad, scarcely acute; flagellum obscure reddish beneath 
(CJEADIGRVISD)|, CAs Batiuad a erect Sean oes Gicy aetatect eee Meters tre breviradia, Vach. 9. 
Radical normalvoL notuphoad andushOont. cei cs ccs. ese oee ee ocnieeree : Ths 
Peees blacks unsect well punctate (Peri)... i i... s.ds oe). atripes, Vach. Q. 
Legs with some yellow markings or spots; insect less punctate..........8. 
8. Larger; hind tibiae with a yellow basal annulus (Bolivia) 
stilbaspis, Vach. 9. 
Smaller; hind tibiae with only yellow basal spots (Bolivia) 
fissa, Vach., 3, &. 
—T. D. A. Cockerell.| 
The following species, observed at Villa Encarnacion, are addi- 
tional to the fauna of Paraguay: 
Family Chrysidide: 
Holopyga lazulina Dahlbom. 
Family Mutillide: 
Rhoptromutilla hepatica (Gerstaecker). 
Mutilla scoparia (Gerstaecker). 
Family Sphegide: 
Sphex opacus Dahlbom. 
Family Bembecide: 
Bembidula discisa Taschenberg. 
Monedula signata (Linnaeus). 
Family Eumenide: 
