AMBLYPTILUS. 23 



conspicuous projecting triangular tuft of black 

 scales beyond the middle, and a few more below 

 the apex of the lobe. 



The abdomen is white above and beneath, with a 

 fuscous line along each side, which also crosses 

 it above near the base, and again below the 

 middle. 



The third pair of legs are annulated with white and 

 fuscous-brown, the bases of the white spurs being 

 also fuscous. 



Expanse 23 millims. 



I took three specimens of this conspicuous and 

 distinct species in the forest of Taxodium semper- 

 virens near Crescent City, on the coast in the north 

 of California, about the 20th June, 1872. It is 

 allied to A. acanthodactylus and A. cosmodactylus of 

 Hiibner. 



Amblyptilus cosmodactylus, Hii 



(PLATE II. FIGS. 2, 3, 4.) 

 AnililyptiUa cosmodactyla, Hiibn., Wocke, Cat. 3131. 



I have at least fifty specimens of this species 

 taken at different times and places, ranging from San 

 Francisco on the 16th of May to Mount Shasta at 

 the end of August 1871. The species seems to be 

 widely distributed and to be everywhere common. 



I met with it again, early in April 1872, in the 



