280 ENTOMOLOGICAL NEWS. [Oct., '^04 



to three-eighths of an inch, and the width a little over one- 

 eighth of an inch. In texture they are paper-like ; in color 

 the)^ differ scarcely at all from the dull gray and brown of the 

 twig. Their most distinctive feature, noticeable only on close 

 inspection, is the presence of fine cross-striations due to very 

 many parallel lines of silk loops or points, darker in color than 

 the background and standing up like the pile on velvet. The 

 flat side of the cocoon, applied to the twig, is white. Old 

 cocoons have a weathered appearance and show little trace of 

 the striation mentioned above. Each has also, near the down 

 twig end, a small opening through which the young spiders 

 escaped . 



Quite a number of spiders in one locality made the mistake 

 of attaching their cocoons to a red-painted foot-bridge across 

 a small creek. In this situation their gray tints made them 

 very conspicuous, in fact, noticeable at some distance. 



Each cocoon contains from five to twelve pale buff eggs 

 which adhere slightly, although they cannot be called agglu- 

 tinate. A few freshly spun cocoons were found during the 

 first half of September, but it was not until some two or three 

 weeks later that the majority of the females laid their eggs. 

 Upon the advent of cold weather the eggs were still un- 

 hatched, so it is likely that they remain in that condition 

 until spring. 



Two New Species of North American Stenopel- 

 matinae (Orthoptera). 

 By James A. G. Rehn. 



Pristocenthophilas marmoratns n. sp. 



Type: $ ; Mountains near Claremont, Los Angeles Co., 

 California. (C. F. Baker). Collection Academy Natural 

 Sciences, Phila. 



Allied to P. rhoadsi Rehn, from Uruapan, Mexico (Trans. 

 Amer. Ent. Soc, xxix., p. 17), but differing in the slenderer 

 antennae, the strongly tuberculate abdomen, and the slenderer 

 posterior tibiae and tarsi. 



