SYRICHTHUS. 121 



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

 head and breast pale buiF. 



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 

 tibia3 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 Linnh. Syst. Nat. I, 795. S. tartarus Hiibn. S. syrichthus 



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



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

 daries beneath cinereous, with waved black streaks. Antennae 



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. 2me 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. 



Boisd. 



