1961] 
Evans — Genus Epipompilus 
29 
4. Abdomen with whitish markings on tergites 2 and 5, none on 
sternites; posterior lobes of pronotum rufous (Mexico) 
3. aztecus ( Cresson ) 
Abdomen with whitish markings on tergites 2, 3, 4, and 5, also on 
sternites 2 and 3; posterior lobes of pronotum whitish (Brazil) 
4. bifasciatus (Ashmead) 
5. Size larger (8-1 1 mm.) ; abdomen with whitish markings on ter- 
gite five, this tergite otherwise black (Brazil) 6 
Size small (6-7 mm.) ; abdomen not marked with whitish on 
tergite five, tergites five and six brownish-ferruginous (Central 
America) 7 
6. Antennae black; propodeum black except for limited yellowish 
markings; hind tibiae unarmed 5 * haupti (Aide) 
Antennae rufous except darker apically; propodeum wholly rufo- 
castaneous; hind tibiae weakly spinose . 6. excelsus (Bradley) 
7. Second abdominal segment with a pair of whitish spots; hind 
tibiae unarmed (Panama) 7 - delicatus Turner 
Second abdominal tergite without whitish spots; hind tibiae with 
scattered, short spines (Costa Rica) 8. insolitus n. name 
1. Epipompilus pulcherrimus (Evans) new combination 
Aulocostethus pulcherrimus Evans, 1955, Ent. News, 66: 150. [Type: $, 
Everglades Nat. Park, Florida, 30 December 1953 (U. S. Nat. Mus.)]. 
Remarks. — Since describing this species from the unique type, 1 
have seen one additional specimen, from Mangrove Cay, Andros Is- 
land, May-June 1917 (W. M. Mann) [Amer. Mus. Nat. Hist.]. 
This specimen agrees well with the type except that it is smaller 
(about 5 mm. long, fore wing 4.3 mm.) and the pronotum has a 
broad median streak of pale rufous as well as being rufous anteriorly 
and posteriorly. This species is colored quite differently from any 
other. The pronotum is much shorter than in aztecus , nearly as 
short as in williamsi. The claws are the same as in aztecus and other 
species of the genus, my statement to the contrary in the original 
description being in error. 
2. Epipompilus williamsi (Banks) new combination 
Epicostethus williamsi Banks, 1947, Bull. Mus. Comp. Zool., 99: 446. [Type: 
$. Banos, Oriente, Ecuador, 6000 feet, 30 Oct. (Mus. Comp. Zool.)]. 
Remarks. — Bank’s description is detailed and there is no reason to 
repeat it here. The pronotum is short and subangulate behind, the 
front femora are barely incrassate, and the hind tibiae have several 
spines. The first two of these characters are shared (more or less) 
