1910] A Peculiar Gemis and Species of Oribatidce 211 



G). Femora of second legs large, flattened and with a lateral 

 blade-like expansion (Fig. 5). 



The genus for which Oripoda elongata stands as a type will 

 occupy a place next to the genus Gymnobates Banks, a genus 

 represented by only two species, both of which are American. 

 It shares with this genus the elongate form of the body and the 

 truncate nature of the tarsi of the first two pairs of legs. The 

 pteromorphae represent an exaggeration of the form shown in 

 Gymnobates, being extended farther forward and united by a 

 transverse ridge at about the middle of the cephalothorax! It 

 differs from this genus in having an elongate, cylindrical ceph- 

 alothorax, entirely devoid of either the true or the lateral 

 lamellae; and in the structure of the second pair of legs. The 

 species may be described as follows: 



Oripoda elongata Banks and Pergande. 



Light chestnut brown. 



Cephalothorax very long, cylindrical, fully twice as long as 

 broad; sides of cephalothorax almost parallel. No lamellee, 

 translamella or lamellar hairs present. A superior pair of 

 bristles present, each pectinate, almost straight and about 

 as long as the tibia of leg I. There is a slight, chitinous ridge 

 connecting the two pteromorphae, which passes transversely 

 across the middle of the cephalothorax. Pseudostigmatic 

 organs, short, capitate and entirely concealed by the ptero- 

 morphas. 



Abdomen cylindrical, about twice as long as broad. Ptero- 

 morphae very long and narrow, extending the entire length of 

 the abodmen and for about one-half the length of the cephalo- 

 thorax. The abdomen bears dorsally about twenty rather small, 

 slightly curved, pectinate bristles. There is an anterior lateral 

 marginal pair; a dorsal pair; a posterior terminal pair; and about 

 seven pairs situated upon or near the base of the pteromorphae. 

 Genital covers (Fig. 3) each about one-half as broad as long and 

 semi-disc-shaped. They are situated over twice their length in 

 front of the somewhat larger anal covers. Anal covers (Fig. 3) 

 subrectangular in shape and almost approximate to the posterior 

 margin of the ventral plate. 



Anterior pair of legs extending about one-half their length 

 in front of the tip of the cephalothorax; tarsus of leg I two-thirds 

 as broad as long, truncate anteriorly; tibia twice as long as the 



