148 MISSOURI BOTANICAL GARDEN. 
Described from 21 9 9 and 22 ¢ ¢ collected and reared in 
Southern California. 
The males are as a rule smaller than the females with the 
marginal band often much narrower, sometimes reduced 
to a small dot or even entirely wanting. 
PRODOXUS INTERMEDIUS Riley. 
[Pl. 43, Fig. 1.] 
This species was described in the same paper as the pre- 
ceding from two female specimens taken by Mr. J. Boll in 
Texas and one taken by myself July 18th, 1887, at Ute 
Pass, Colo. No others have been taken since, and the early 
states and the male remain unknown. This species is very 
interesting as showing how closely, except in lacking the 
characteristic maxillary tentacle, the species of Prodoxus 
may come to the typical Pronuba. The character of the 
ovipositor in this Prodoxus would indicate that the species 
breeds perhaps normally in the fruit, notwithstanding it can 
have nothing to do with pollination. It would thus be en- 
tirely dependent for its existence on the efforts of Pronuba. 
, Imago (Pl. 48, Fig. 1), 9.— Expanse 28.5 mm. Coloration as in 
Pronuba yuccasella. Basal joint of the maxillary palpi not provided with 
a tentacle, but having a slight tubercle at the tip. Apical joint of 
the abdomen (Fig. 1, a) shaped as in Pronuba yuccasella, but slightly 
deeper and possibly a little thicker. Ovipositor, shaped as in Pronuba 
yuccasella, but slightly stouter, more acuminate at tip and with the 
serrations of membrane finer and more numerous (¢jo). The sculpture 
of basal joint shows like very fine punctations in angular rows (bjo). 
Described from 2 ¢ 9 from Texas and 1 ¢ from Ute Pass, 
Col., July 18, 1887. 
PRODOXUS CINEREUS Riley. 
[Pl. 43, Fig. 4.] 
Originally described in the same paper as the preceding 
from seven males collected in Kern Co., California, by Mr. 
Morrison. Since that time I have obtained numerous 
specimens either from the flowers of Yucca whipplet, in 
Los Angeles Co., California, collected by Mr. Koebele, or 
reared from the flower stems of the same species of Yucca. 
