1943] 
North American Species of Epicauta 
71 
scutellar spot on the elytra, sometimes joined across the base. 
Holotype: $ , Salida, Colorado Aug. 13 (MCZ No. 26063). 
Allotype: 2 , Jemez Springs, New Mexico (MCZ). 
Paratypes: Colorado: 4 Masonsville (3 Colo., 1 Werner), 5 Ft, 
Collins (4 Colo., 1 Werner), 3 Boulder (1 Colo., 1 AMNH, 1 ^ 
Parker), 1 B. Rotger C. R. (Parker), 1 Morison (Colo.), MSM-N/Yo. 
1 Colo. (Colo.). Texas: 4 Davis Mts. (2 Ohio, 1 Parker, 1 
Werner). New Mexico: 3 Jemez Spgs. (Frost), 1 Barton — 
6700 ft. (ANSP). Arizona: 4 Copper Basin — near Pres- 
cptlXTSNM), 1 White Mts. (Parker), 1 Wilmsn. Val. — 
Ball (Parker). 
Epicauta parkeri sp. n. 
This and the species that follow fall into the old genus Macro- 
basis , which I have decided to suppress under Epicauta. 
Resembles E. gissleri (Horn) in general appearance. Black, 
sparsely clothed with cinereous pubescence, which forms denser 
margins on the elytra. The antennae are more slender than in 
gissleri , with the segments less distinctly separated. The head 
is elongate-triangular and the mandibles are as long as in 
mimetica. They go one-third beyond the labrum, cross at the 
tip and have a distinct tooth. 
Holotype: $ , White Mts., Arizona July 8, 1933 (Parker). 
Paratypes: 3 eutopotypical (1 Parker, 2 Werner), 1 topotypical 
(Parker), 1 San Rita Mts. — Ball (Parker), 1 San Rita Mts. 
— 5-8000 ft. — July (Snow) (MCZ No. 26080), 1 Globe 
(Parker), 1 Baboquivari Mts. (MCZ), 1 Flagstaff (Ohio). 
Epicauta polingi sp. n. 
Three distinct species have been known under the name of 
linearis. None of these is the true linearis , which has the first 
segment of the male antennae excavated externally at the tip 
and has the second segment shorter than the third in both sexes. 
It is a rare species. 
Slender. Head and pronotum black or dark brown, the elytra 
pale ferrugineous, the whole rather loosely clothed with cinere- 
ous to luteous pubescence. First segment of male antennae 
exceeding the head by one-third its own length, not over one- 
sixth as broad as long, straight, flattened behind and with 
cinereous pubescence along this surface. Second segment nar- 
rower, elongate oval, about one-third as long as first. The first 
