370 



Genus Tegeocranus Nicolet. 



Body rough; cephalothorax and abdomen plainly divided; 

 ungues monodactyle; lamellae large, blade-like. 

 Two species: 



Integument granular velatus. 



Integument reticulate , lamellatus. 



Tegeocranus velatus Michael. 



1880. Tegeocranus velatus, Michael, Jour. £.oy. Micr. Soc, Vol. III., p. 189, 



PI. VI., Fig. 6-9. 

 1884. Tegeocranus velatus, Michael, Brit. Orib., Vol. I., p. 313, PI. XXXI., 



Fig. 9-15. 

 1895. Tectocepheus velatus, Berlese, Acari, Myr., Scorp., Fasc. LXXVIL, Nr. 2. 

 1898. Tegeocranus velatus, Michael, Das Tier., Lief. 3, p. 35. 



Light brown; integument coarsely granular. 



Cephalothorax trapezoidal. Lamellae almost as long as the 

 cephalothorax, the anterior lamella one third free; translamella 

 reduced almost to a line. Lamellar hairs short, stout, and 

 pectinate on their outer borders only, peculiar in that they are 

 so greatly curved inward that their tips may touch; interlamel- 

 lar hairs wanting. Pseudostigmata cup-shaped, slightly pro- 

 jecting; pseudostigmatic organ subcapitate, with a long pec- 

 tinate head. 



Abdomen almost as broad as long and peculiar in possess- 

 ing a lateral, chitinous, shelf-like expansion at the shoulders, 

 which extends backward along the lateral margin to about the 

 middle of the abdomen, and is transversely wrinkled. Genital 

 covers much smaller than the anal covers, and situated about 

 their length from the latter; anal covers situated about a thi^d 

 their length from the posterior margin of the abdomen. 



Legs rather short, subequal, about three fourths as long as 

 the abdomen, sparsely clothed with rather short, stout hairs. 

 Tibia slightly longer than the tarsus; claw of tarsus stout, two 

 thirds as long as the segment itself. 



Length, 0.88 mm.; breadth, 0.30 mm. 



In moss. Collected by the writer at Muncie, 111. 



