1892.] ENTOMOLOGICAL XF.WS. I 77 



darker than the ground color, and there is a darker superstig- 

 inatal shade. Substigmatal band along the riclge pale yellow, 

 distinct, dotted with green; spiracles small, and situated on the 

 upperside of the stigmatal ridge, the spiracles on joints 2 and 

 12 being larger than the others, the one on joint 12 situated above 

 the ridge. 



Chrysalis. Fastened by cremaster and a loop of silk to a stem 

 or blade of grass, on which a mat of silk had- been previously 

 spun. Cylindrical, slightly flat ventrally, long and slender. Ab- 

 domen tapering, thickest at thorax; a tapering process like a 

 horn projecting from the head in front; wing cases not projecting, 

 the leg cases extending a little further along the abdomen than 

 the wing cases; eyes prominent; cremaster broad, flat, excavated 

 below and ridged subdorsally. much resembling the anal plate of 

 the larva; width 3.5 mm.; length 19 mm.; length of "horn" 

 1.5 mm. The color of the living chrysalis was not ascertained, 

 but is presumably green. 



Food-plant. Grass growing near the sea (species not deter- 

 mined). Another larva had its head 1.9 mm. wide in the fifth 

 stage and died while preparing for another moult. It would thus 

 have had six stages if it had lived. Larvae from Santa Barbara 

 County, Cal., on the grass very near the sea, where they were 

 in reach of the salt spray; none found outside this region. 



-o- 





Note on Trichobius dugesii Twns. 

 By C. H. T. TOWNSEND. 



U-W " 



It will perhaps be remembered by some that an articlc.in the 

 last volume of ENTOMOLOGICAL NK\VS (vol. ii, pp. 105-6) on a 

 new hippoboscid from Mexico, which I described as Trichobins 

 n. gen. dugesii n. sp. , adopting the generic name Trichobius, 

 which was apparently long ago proposed by Gervais, but of which 

 no description, or reference to such, could be tound. 



Quite recently 1 >r. Alfredo Dugvs, who originally sent me the 

 hippoboscid, very kindly communicated to me the following in- 

 formation which will throw much li-lit on the original use of this 

 generic term, and for which I am under main- obligations to him. 



Dr. Duges, who had labeled the specimen " Trichobius sp.," 

 had searched in vain at different times during- the la^t y< -ar for the 



