6 PKOCEEDINGS OF THE NATIONAL MUSEUM voi,. 6fe 



insertions of setae A3 and 02 passing posterior to ocellus I. Head 

 with conspicuous dark submodian arcs and with some dark reticula- 

 tion. 



Body about 30 mm. long and 4.5 mm. broad, broadest tlirough 

 abdominal segments 2, 3, 4, and 5 and tapering both anteriorly and 

 posteriorly from these; skin set with small, retrorse, spinelike granules 

 wiiich are pale in the pale lines, dark elsewhere dorsally, and pale 

 ventrally, interspersed in dark areas with dark rounded granules; 

 general color green witli much infuscation. Longitudinal area 

 between tubercles I occupied by a dark stripe, except for the pale 

 marginal Unes and pale flecks representing the middorsal line. The 

 area included between the pale longitudinal line dorsad of tubercel 

 I and the stronger pale line ventrad of tubercle II, dark but much 

 flecked with pale. Below this and including tubercle III a dark 

 longitudinal stri])e more distinct than the others and flecked witli 

 pale. Spiracles black, included "wdthin the pale subspiraculiir stripe. 

 Venter pale with the setigerous tubercles black as elsewhere. Se- 

 tigerous tubercles I, II, and III distinctly strongly conical on all 

 abdominal segments, and somewhat larger on jvbdominal segments 

 1, 2, and 8. Cervical shield margined laterally with fuscous. Head 

 with but little dark reticulation, the median black arcs very broad, 

 covering the head posteriorly. Claws of legs with the base angulate. 



Labial palpus with tlie segments in the proportionate lengtji of 

 18, 2, and 3. Spinneret about six times as long as the median 

 breadth, cylindrical. Mandible with only a slight produced mar- 

 gin along the first ventral rib and without a basal process. Blade 

 of the maxillulae with about 11 oblong toothlike projections on the 

 free margin. 



In the immature larva setigerous tubercles I and II on the abdomen 

 are remarkably large and conical, the entire head is blackish, and the 

 cervical shield is pale with black lateral margins. 



Head setae and punctures as follows: A2 twice as near to A3 as to 

 Al; A2 twice as near to Aa as to Al; A2 slightly neai'er to Al than 

 to Pa; Aa slightly nearer to A3 than to A2; A3 distinctly more than 

 the width of the ocellus removed from ocellus II; Pa, Aa, and A3 

 approximately in a straight line; ocellus VI distinctly nearer to 

 01 than to 03; LI much nearer to La than to 02. 



Material. — Described from one mature (?) alcoholic larva and 

 one mature (?) and one immature inflated larva, all in the collections 

 of the United States National Museum. The inflated larvae are 

 labelled "No. 970. Dyar and Caudell Collectors." 



Distnbutio)t. — Moths have been seen from Texas, Colorado, Utah, 

 and California. 



Food flants. — -The recorded food plants include: Alfalfa, plJox, 

 grasses, and Grindilia squarrosa. 



