May 1S51.] 



PSYCHE. 



83 



turitv the yellow spots are quite faint and a 

 blackish shade extends up from the eyes 

 widening to the vertex. Jaws black ; anten- 

 nae white. Body smooth, the conical pili- 

 ferous elevations represented by brown spots. 

 The processes on joint 2 are relatively much 

 smaller and without spines. A slight dorsal 

 elevation on joint. 3 posteriorly, just covered 

 by the end of the first dorsal patch. Tails 

 spined as before and marked the same. The 

 extensile threads are dark purplish black, 

 once annulated with purplish white. Dorsal 

 patches much as before, the second, third and 

 fourth strongly confluent, the second and 

 third most so. The second is marked cen- 

 trally with many dark crimson spots, with 

 which color all the patches are narrowly 

 edged inside the yellow border. At maturity 

 the color of all the patches fades to lilac and 

 a number of yellow spots appear in the sec- 

 ond one, its outline anteriorly becoming ir- 

 regular. Body yellowish green with a 

 transverse row of purple-brown spots on each 

 segment, more numerous subventrally, and 

 a number of whitish spots, which are thick- 

 est at the spiracles giving the appearance of 

 a stigmatal line. These are also found on 

 the dorsal patches, and on the anal plate are 

 partly confluent, replacing the purplish 

 brown. The spots on the patch on joint 2 

 are yellowish like those on the head. Spir- 

 acles dark reddish brown, partly surrounded 

 by a similarly colored but paler spot. Ven- 

 ter whitish, at maturity green, a reddish 

 ventral line on joints 12 and 13. Purple spots 

 on the bases of the legs and on the legless 



segments, 

 ish. 



Feet green, marked with brown" 



At the anus, beyond the upper anal 

 plate, are two erect spiny hairs which 

 serve to project the frass to a consider- 

 able distance. Length of larva 35 mm. ; 

 of tails 5 mm. 



Cocoon. Formed on a piece of wood 

 first of gummy silk which is strength- 

 ened by many little pieces of wood 

 bitten off from inside. When finished, 

 it is elliptical, quite hard and of the 

 color of the wood or bark on which 

 it is made. Length about 30 mm. ; 

 width, 13 mm. 



Pupa. Cylindrical, tapering slightly at 

 both extremities, somewhat flattened. Color 

 pale brown, venter yellowish and a dark 

 dorsal line. Wing and leg cases greenish. 

 Abdomen very minutely punctured. Wing 

 cases creased. Length iS mm. ; width 6 mm. 



The duration of the first larval stages 

 was from three to six days, the last two 

 seven days. The pupa state lasts through 

 the winter. 



Food plant. Probably Willow 

 (Salix). 



Larvae from Los Angeles Co.. Cali- 

 fornia. 



TWO NEW TACHINIDS. 



BY C. II. TYLER TOWNSEND, LAS CRUCES, N. M. 



The following two species of Tachi- the names in a future paper of his, I 



nidae, recently received from Professor submit descriptions of them. 

 F. L. Harvey, of Orono, Maine, among 



a lot of other Diptera for determination, Tachina disiocampae n. sp. $. Eye* 



prove to be new. As he desires to use brown, very thinly and indistinctly 



