278 ENTOMOLOGICAL NEWS. [Oct., '06 



a row of mere points or obsolete. Two pale greenish mocular 

 bands on secondaries below." 



Syrichtus $ has the inner half of the wings covered by long 

 white downy hairs. The females differ in maculation as do the 

 males of the two species, but the differences are not as well 

 marked. Syrichtus 9 is more brown than black. They may 

 be separated from tesseUata 2 at a glance. In the NEWS, vol. 

 xvii, page 96, I indicated a new form under the name Pyrgus 

 occidentals. This is not a species, but only a form or geograph- 

 ical race of tesseUata. It has bothered me for a long time and 

 has frequently been sent to me to name. It is smaller than 

 tcsscllata and whiter in color, and the spots are larger in pro- 

 portion to the ground color. It expands in the $ 25 mm. ; 

 whereas tcsscllata expands 32 mm. This is an average size for 

 the two. 



I have specimens from Northwest Territory (Geddes), Cali- 

 fornia, Arizona, and Texas. 



Syrichtus and tesseUata may be compared as follows : 



Syrichtus c? TesseUata < 



A marginal row of white spots A marginal row of white pin 



on upper side of inferiors. 



Macular bands on inferiors be- 

 low pale greenish. 



Long white downy hair on inner 



points on upper side of inferiors or 

 obsolete. 



Macular bands on inferiors be- 

 low white or brownish. 



No such hair. 



half of wings. 



The females may be separated in the same way, except that 

 the white hair is lacking in this sex. According to Godman and 

 Salvin the genitalia of the two are different. The distribution of 

 the species outside of the United States is given in the Biologia. 



I HAVE been getting a considerable number of Hesperidas to name 

 and I am glad to see such an interest in these little butterflies, which 

 have been so much neglected. Outside of the comma variations they 

 have splendid specific characters, and with so many recent figures it 

 seems strange that they prove so difficult to collectors. I am always 

 willing to name spread specimens in this family. Mr. J. H. Cook (Sept. 

 Jour., N. Y. Ent. Soc.) is to be congratulated on telling us what 

 Thanaos ausonius really is. HENRY SKINNER. 



