48 The Wert A Mexican Scientist. 



transversely wrinkled and somewhat irregularly but quite thick- 

 ly covered both dorsally and ventrall'y with minute wart-like 

 concolorous tubercles, which give the integument a papillate and 

 roughened appearance. Length, 16 mm. 



One specimen beaten from foliage, May 24, 1891. In a north 

 side branch of Soledad canyon. Color noted in life. [No. 127]. 



(b) A MODERATELY LARGE, STOUT, BROWNISH LARVA, 



mimicking somewhat a span-worm. Five pairs of prolegs, 

 on segments 7 to 10, and 13, but anterior pair much smaller, 

 shorter and less developed than others. Body humped between 

 true legs and prolegs. Head a little narrower than anterior seg- 

 ments, rounded in outline, the head and median portion of pro- 

 thoracic segment somewhat chitinous, rest fleshy. Prothoracic 

 segment a little narrower than other two thoracic segments. 

 Segment 5 a little constricted, also 6 anteriorly; 7 to 1 1 wider, 

 about equal in width; 12 and 13 successively narrowing. Three 

 thoracic segments short, hardly one-third as long as wide; 5 and 

 6 not quite as long as wide; 7 to 10 not or hardly one-half as 

 long as wide; 11 and 12 about one-half as long as wide; 13 elon- 

 gate, with a transverse suture or wrinkle making it appear as 

 two segments. Head paler, irregularly brown reticulate, the 

 anterior portion before margin broadly blackish; a short longi- 

 tudinal brownish stripe on each side on posterior part of head, 

 each with some lateral lines running outward and directed 

 slightly forward, but this pattern is not distinct in all specimens. 

 Head deeply once notched behind. Body with two median dor- 

 sal longitudinal heavy brown stripes continued upon anterior 

 portion of anal segment, less distinctly separated on segments 5 

 and 6, and emarginate on inner edge on 8 to 12. A longitudinal 

 lateral brownish stripe also on each side near edge of dorsum, 

 rest of dorsal portion and venter light colored. Head wdth some 

 hairs, especially anteriorly and below; dorsum and venter with a 

 few hairs on each segment. Six well developed thoracic legs, 

 with a number of hairs on each. Length, 16 to 23 mm. 



Nine specimens, May 23, 1891. Found in a north side 

 branch of Soledad canyon, under rather loose bark of a fallen 

 dead scrub oak. They seemed to be the same as the larvae which 

 were constantly dropping from scrub oaks in this spot all that 

 day and night, though I have none of the latter for comparison. 



