76 COOK 



Family SCHENDYLID^. 



The Schendylidae are a circumpolar family rather closely related to 

 the true Geophilidae, but apparently forming a distinct and rather com- 

 pact group. The typical genus Schendyla is widely distributed in 

 North America, as well as in Europe and North Africa. There is a 

 second genus in the Mediterranean region, a third in West Africa, and 

 a fourth in Madagascar. The American tropics have furnished as yet 

 no representative of this family, though Pectiniunguis is known from 

 the Florida Keys and from Lower California. In addition to that 

 noticed below, there is a fourth American genus {Holitys) from the 

 Organ Mountains of New Mexico. 



ANALYTICAL KEY TO THE NORTH AMERICAN GENERA OF 

 SCHENDYLIDAE. 



Ventral pores wanting Genus Escaryus. 



Ventral pores present, in a circular median area. 



Anal legs armed with a normal claw Genus Holitys, 



Claw of anal legs rudimentary or wanting. 



Claw of maxillary palpus simple ; mandibles with a single dentate 

 lamella ; last joint of anal legs much reduced. 



Genus Schendyla. 



Claw of maxillary palpus pectinate ; mandibles with 3 dentate 

 lamella ; last joint of anal legs as long or longer than the 

 penultimate Genus Pectiniunguis. 



Genus Escaryus Cook & Collins. 

 Escaryus COOK & COLLINS, Proc. U. S. Nat. Mus., xm, p. 391, 1890. 



This genus was described originally from New York, but is prob- 

 ably distributed widely in eastern North America, and is also known 

 to exist in northeastern Asia. 1 It differs from Schendyla, the only re- 

 lated genus of similar distribution, in having the last joint of the anal 

 legs of normal size and armed with a claw, and in the absence of 

 ventral pores. 



ANALYTICAL KEY TO THE SPECIES OF ESCARYUS. 



Females with 41 pairs of legs E. urbicus (Meinert). 



Females with 45-51 pairs of legs. 



Length 60 mm. and upward ; claw of anal leg much smaller than 

 the others E. sibiricus Cook. 



1 Escaryus sibiricus Cook, Proc. Ent. Soc. Washington, rv, p. 304, 1899. 



