314 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



at Tagus Cove. The fact that this form confined itself ahnost 

 entirely to devouring the leaves of Erigeron lancifolius (a few 

 being also found feeding on Croton Scouleri), is significant. 

 The larvae were most plentiful from 1500 to 2000 feet eleva- 

 tion and were not found below 600 feet, at Tagus Cove. Their 

 range is apparently controlled by Erigeron. 



The following is a description of the larva : 



Mature larva — Smooth; head rather rugose with scant pile, 

 color apple green, with a basal stripe of paris green and an 

 anterior stripe of olive green with brown; clypeus, the same 

 color as latter stripe; ocelli green, in a brown blotch. Body 

 stouter than in P. rustica calapagensis, dark green with seven 

 oblique prune purple stripes, each with a streak of emerald 

 green above and one of creamy yellow below, the latter bor- 

 dered by duller prune purple merging into dark green and 

 duller purple. Dorsum creamy yellow, median line green; 

 anal flap, dark olive encircled with Paris green ; anal horn stout 

 and curved, ochre yellow, roughened with small dark tuber- 

 cles. On segment 1 are two irregular rows of dorsal tuber- 

 cles, in a field of dark green. Description based on several 

 alcoholic specimens, in poor condition, and on field notes. 



Judging from the description and illustration of P. rustica 

 rustica, by E. E. Smyth (Ent. News, XI, p. 486, 1900), the 

 above described insect corresponds much more to it than does 

 the usual plainer and rough form of calapagensis. From this, 

 one might be tempted to infer that the smooth form of larva 

 is the more ancient one which is being replaced by the more 

 omnivorous rough form. Unfortunately these two forms were 

 not kept separate and both calapagensis and its aberration 

 nigrita were produced from this lot. Plate XX, fig. 10. 



7. Phlegathontius leucoptera Rothschild and Jordan, Novi- 

 tates Zoologicae, Supplement Vol. IX\ p. 79, and 805, 1903, 

 figure Vol. IX,^ plate XI, fig. 2, $ . 



The description reads : 



"Protoparce leucoptera spec. nov. (PI. XI f. 2, 2) ? Antenna very- 

 slender, faintly incrassate distally, scaling white. Body whitish grey, 

 mixed with brown, sides of palpus near eye, a dorso-lateral patch on 

 metanotum and first abdominal segment, bases of apical edges of abdom- 

 inal tergites on sides, brown ; white dorso-lateral dots of abdomen widely 

 separate (not distinct in our unique individual) ; five large yellow 



