110 
Psyche 
[Sept. 
or dark brown to black, the legs rufous. The Sinaloa 
and Arizona specimens have the legs of the same color 
but the body color paler so that the contrast is not as 
great. I can find no other differences. There is a slight 
variation in the width of the antennal segments but it oc- 
curs in the Lower California and Arizona specimens 
alike. The pubescence is composed of hairs which are 
brown at the base and cinereous apically. The brown 
zone may be up to two-thirds of the length of the hair 
or reduced to less than one-third, thus affecting the gen- 
eral color of the insect considerably. Lower California 
specimens in general have more brown than Arizona 
specimens. 
Localities: Lower California: Comondu; 5 mi. So. of 
San Miguel, San Domingo ; San Quentin ; Coyote Cove, 
Conception Bay; Venancio; Triunfo; 10 mi. S. of Cata- 
vina ; La Paz ; Todos Santos ; all in the southern district. 
Sinaloa: Los Mochis. Arizona: Ehrenburg, Yuma Co.; 
Cave Creek, Maricopa Co. ; Gillespie Dam, Maricopa Co. ; 
Florence, Pinal Co. I am very much indebted to the 
California Academy for permission to study the Lower 
California and Sinaloa specimens. 
Epicauta hirsutipubescens (Mayd.) 
Macro basis hirsutipubescens Maydell, 1934, Trans. Am. 
Ent. Soc. 60 : 334. 
Epicauta virgulata , Werner, 1945, Bull. M.C.Z. 45 : 512 
(in part). 
This species can be distinguished from virgulata by 
the shape of the hind trochanters (Fig. 3) and by the 
shorter first antennal segment and lack of long hairs on 
the middle femora of male. In the male the first an- 
tennal segment reaches the hind margin of the eye and 
is equal to or slightly shorter than the following three, 
and is not as deeply excavated as in virgulata (Fig. 3). 
The second to fifth segments are not flattened and ex- 
panded. The posterior trochanters of the male have 
a tuft of hairs on the posterior border as in the figure. 
West Texas specimens are usually black, with grey 
pubescence (as in the type) or with tan pubescence, in 
