VOL. IV.] Notes on Lepidopterous Larvc?. 355 



diameter 8 inches. Fls. February; Fr. September. Dry plains 

 or hills, scattered, or occasionally in groves, at from 1000 to 

 3000 feet altitude, from the southern slope of the San Bernardino 

 Range to the Coast Mountains (San Bernardino; Temecula). On 

 the northern slope abundant and sometimes larger, scattered 

 through the upper part of the Yucca brevifolia belt, between 3000 

 and 4000 feet altitude, extending from Cushenberry Canon to the 

 upper end of Antelope Valley. 



Juniperus occidenialis Hook. Tree, 40 feet high, the trunk 2 

 feet in diameter. Northern side of the San Bernardino Moun- 

 tains, at 6000 to 7000 feet altitude. Bear Valley; between Hal- 

 comb Valley and Green Lead, forming a considerable forest, 

 unmixed with other coniferous trees. 



NOTES ON LEPIDOPTEROUS LARVAE. 



BY C. H. TYLER TOWNSEND. 



I. [.El'IDOPTEROUS LARVAE WHICH BORE THE FLOWER-STALKS 



OF DASYLIRION. 



Several lepidopterous larvae were found May 18, 1892, in a 

 dead flower stalk of Dasylirion wheeleri, on Tortuga Mountain, 

 which is on the Mesa about five miles to the southeast of Las 

 Cruces, New Mexico. 'The stalk containing these larvae was an 

 aborted one, which for some reason had died when it reached the 

 length of a foot and a half, but had still become hard and woody. 

 Probably the death of the stalk was caused by the larvae, which 

 were found boring in tunnels inside its base, like coleopterous 

 larvae. 



Desoiption of Larva. — Length, 30 to 42 mm.; width of meso- 

 thoracic segment, 6^ to nearly 7 mm. Whitish, nearly naked, 

 elongate, widest anteriorly (on mesothoracic segment), with three 

 pairs of quite well-developed thoracic legs, and five pairs of distinct 

 but aborted and approximated prolegs. Head and dorsum of pro- 

 thoracic segment corneous, of a tawny brownish tinge; rest of larva 

 fleshy. Head about one-half width of mesothoracic segment, 

 base retracted within prothoracic segment, sparsely hairy on 



February 7, 1894. 



