574 The American Naturalist. [June, 
Mr. Witmer Stone notes the occurrence of the genus Neotoma in 
Pennsylvania. The specimens, which were secured near the top of 
South Mountain-in Cumberland Co., evidently belong to a new species, 
and are described by Mr. Stone under the name Neotoma pennsyl- 
vanica. This species is distinguished from N. floridana by its larger 
size, its densely hairy and distinctly bicolored tail, and by certain well- 
marked cranial characters. (Proceeds. Phila. Acad., 1893.) 
ENTOMOLOGY. 
North American Cosmetidæ—A recent study of a considerable 
collection of Cosmetidæ from the Southern States sl that three well- 
marked species occur in our fauna. This family belongs to the sub- 
order Mecostethi of Simon or Laniatores of Thorell, of the order 
Opileonea. Say described oné species, Wood another and Sorensen 
the third. The three species are closely related and all belong to the 
genus Cynorta. They may be separated by the following key: 
Posterior pair of abdominal tubercles very prominent ; four or five 
ai ‘ 
Posterior pair of abdominal tubercles little larger than anterior pair. 
Dorsum with a distinct yellow Y connected posteriorly with a 
transverse yellow line. C. albolineata. i 
Dorsum without or with very little yellow marking. C. sayt. 
orta ornata is abundant in Florida and probably occurs in the 
South Atlantic States ; C. albolineata is found in Louisiana and Miss- 
issippi; and C. sayiin Texas. An illustrated descriptive synopsis of 
these species is now in the hands of the American Entomological 
Society for publication in the Transactions CLARENCE M. WEED. 
An American species of Sabacon.—In 1879, the French 
Arachnologist, M. Eugene Simon established? the genus Sabacon for & 
very peculiar species (S. paradoxus) of the family Ischryopsalide— 
one of the smaller families of the Opileonea. The specimen descr! 
was immature and the lateral pores were not distinct. No other 
species of the genus appear to have since been described. 
‘The genus Sabacon is especially characterized by the peculiar form 
ofthe palpi, the joints of which are large and swollen, and the short 
‘Edited by Prof. C. M. Weed, New Hampshire College, Hanover, N. H. 
Arachnides de France, VII, 266. 
