10 NATHAN BANKS. 



ORIBATOOEK gvn. iiov. 

 Somewhat resembling the two preceding genera, with a hirge free 

 tectal plate, wings to the abdomen, legs slender, with fusiform joints 

 and simple hairs, the tarsus with but one claw, the genital opening 

 is large and just in front of the larger anal opening, not well sepa- 

 rated from it. The roughened appearance of the only species known 

 to me also distinguishes it from its allies. 



Oribatudes inirabilisi nov. sp. — Length .5 mm. Dark red-brown, legs 

 Iwiely imler; IhkIv short, luoad and convex; tectal plate large, the lateral mar- 

 gins somewhat retlected, front margin broad, concave, the corners shai-p pointed 

 and each bearing a short, stiff, curved bristle ; two superior bristles very long, 

 directed somewhat forward ; seta; quite long, clavate ; abdomen globose, granu- 

 late, with an irregular netwoi-k of ridges, bearing above about sixteen long, stiff, 

 finely serrate and almost clavate bristles, disposed mostly in a longitudinal row 

 each side, a transverse row of four or six much shorter, distinctly clavate ones at 

 tip ; wings moderate, granulate, incurved, not extending in front of the abdomen ; 

 venter with some irregular ridges, genital opening large, barely separated fr(im 

 the larger anal opening ; coxse mostly free ; legs short, a large cvirved plate each 

 side of coxfe I. 



In rotten debris under loose bark of dead trees, Sea Cliff, N. Y. 

 Five specimens were taken at different times during the Summer ; 

 two specimens have the genitalia extruded, so the form must be 

 perfectly mature. 



CEPHUS Koch. 



Tectal plate free at tip, no wings to abdomen, legs with fusiform 

 joints and simple hairs, three equal claws to tarsus, genital opening 

 much in front of the anal. 



The genus has much the appearance of Oribata. I have two 

 species. 



Abdomen densely punctulate piiiict iilal US. 



Abdomen smooth iiitidiis. 



Ceplins punctillatus nov. sp. — Length .85 mm. Dark reddish, legs paler ; 

 cephalothorax narrow, with the tectal plate reaching nearly to tip of head, front 

 quite Ijroad, truncate and cleft, with several short and one long bristle on each 

 side, lateral margins wing-like; superior bristles moderate; setie short, clavate; 

 surface of tectal plate and cephalothorax finely punctulate ; abdomen elliptical, 

 finely and densely punctulate, with two short, stiff hairs on each shoulder, and 

 six near the tip and one each posterior side ; venter granulate, anal plates smooth ; 

 legs short. 



Sea Cliff, N. Y. In a decaying fungus and swe})t from weeds ; rare. 



Cephlis iiitidus nov. sp. — Length 1. mm. Dark reddish, legs yellowi.sh ; 

 tectal plate moderate, triangular, appressed to cephalothorax, but from the side 



