SYRICHTHUS. 121 



side ; a dusky spot in the middle of the disk ; under side of the 

 head and breast pale buff. 



United States. Expands an inch and a quarter. 



SYRICHTHUS BOISD. 



Body robust; abdomen not extending beyond the anal angle of 

 the secondaries ; terminal joint of the palpi inclined ; posterior 

 tibire with two pairs of spurs. "Usually dark brown, with nume- 

 rous translucent angular and square whitish spots, either in rows 

 or scattered. 



1. S. oilus Linnt. Syst. Nat. I, 795. S. tartarus Hiibn. S. syrichtlius 



Fab. S. orchus Cram. Figured in Westw. Brit. Butterflies, pi. 38. 



Wings rounded; primaries varied with black and white. Secon- 

 daries beneath cinereous, with waved black streaks. Antennas 

 black, club cinereous beneath. 



WESTWOOD. 



2. S. ruralis Boisd. Ann. Soc. Ent. 2me ser. X, 311. 



Wings black, with two white spots between the base and the 

 transverse band of the primaries ; secondaries with two bands of 

 spots. Under side of the secondaries mingled with white and 

 brown, the middle and the extremity having a kind of band or 

 brownish shade, with obsolete spots between these two spaces. 



California. 



BOISD. 



3. S. caespitalis Boisd. Ann. Soc. Ent. 2me ser. X, 312. 



Wings black, with two small white spots between the base and 

 transverse bands of the primaries; secondaries have on the middle 

 a small macular band. Under side of secondaries with a narrow 

 median band, continuous, serrate ; no white spots at the base. 



California. 



BOISD. 



4. S. scriptura Boisd. Ann. Soc. Ent. 2nae ser. X, 313. 



Small ; the white spots small ; two white spots between the base 

 and the transverse band of the primaries. Under side of seconda- 

 ries whitish, with the white spots distinct. 



California. A 



BOISD. 



