306 



while in another it is broken, as is also the basal iiortion of the median 

 band. The same is trne of the band across the middle of the winji, 

 while the upper i)ortion of this band is connected with the basal band. 

 The larva shows no strikiug characteristics, but is very similar to most 

 other Prodoxid larvte, being uniformly yellowish white, the head and 

 cervical shield anteriorly slightly darker, the ocelli black, and the man- 

 dibles brown and three-toothed. 



Prodoxus ret ic Hiatus. — One of the specimens received from Trelease 

 taken in flowers of Yucca ivhip2)Iei, variety graminifoUa, at Arrowhead 

 Springs in California, would indicate that this species, which I described 

 from three females from Los Angeles county, Gal., and the habits of 

 which were not known, breeds in some part of this Yucca. The single 

 female sent by Trelease is interesting, in that it shows some variation 

 in the direction of co/orrt(?e«s<'s, especially by the separation of the basal 

 half of the W-shaped band. 



Prodoxuft chiereus (Fig. 3S). — A section of the flower-stem of Yucca 

 whipplei, sent me by Mr. Coquillett last July, contained a number of 

 difitrent larvic, and among them most numerously one which subse- 

 quently proved to be the larva of Prodoxus chiereus. We have known 

 that this species breeds in the main stem of this Yucca, but none of the 

 early states had been observed. The larva is remarkable in that it 

 difters materially from the typical Prodoxus larva. It is first of all very 

 much more elongate, with the sutures between the segments strongly 

 impressed. It is, further, more uniform in diameter than the typical 

 Prodoxus larva 5 but the most striking feature is the anal segment, 

 which bears on its ventral plate two stout, brown, decurved horns 

 resembling those of the larva of Trogosita in Coleoptera, except that 

 these are curved in the opposite direction. I add a technical descrij)- 

 tion : 



Fig. 38. Prodoxus cinereus: a, larva; b, bead and fir.st thoracic joint ; c, anal hooks: rf. pupa: e, jiiipa 

 shell ])rotrnding from stalk;/, adult female ; ij. side view of clasper of adult male: a, il. r. and / en- 

 larged; t, c, and </ still more enlarged. (Original.) 



