OXYPTILUS. 31 



This species, probably more nearly allied to 0. pilo- 

 sellce than to any other, and intermediate between 

 0. tenuidactylus and 0. periscelidactylus, occurred 

 not uncommonly from July 17th to 25th, 1871, in 

 Shasta County, California. I was not aware that my 

 specimens agreed with 0. delawaricus until I sent 

 a specimen to Prof. Zeller, who considers them 

 identical, although his type is a little darker. 



It is, perhaps, superfluous to publish this descrip- 

 tion ; but as Prof. Zeller described his species from a 

 single example, I venture to do so in case it may 

 ultimately be found that the Californian form is in 

 any way to be distinguished from that which occurs 

 in Delaware. 



Oxyptilus nigrociliatus. 



(PLATE II. FIG. 8.) 



Occyptilus nigrociliatus. Zell. Verb. z.-b. Ges. Wien, xxiii. pp. 322, 



323. 

 t^Pterophorus tenuidactylus, Fitch, Nox. Ins. N. Y.. Reps. 1 & 2, 



p. 143. 



The specimen here figured, which Prof. Zeller 

 informs me is identical with his 0. nigrociliatus, was 

 taken with many others, which exhibited no variation 

 whatever in colour, and scarcely any in size, on the 

 14th July, 1871, in Shasta County, California, the 

 only locality in the Western States where I met 



