070 



dostigniutic ovgan slender, pectinate, and clavate. The general 

 shape of the cephalothorax is that of an isosceles triangle with 

 its base corresponding to that of the cephalothorax. 



Abdomen oval, with about twelve short, slightly curved 

 bristles; progaster curved down convexly to meet the cephalo- 

 thorax. Ventral plate large; anal covers large, almost attain- 

 ing the posterior margin of the abdomen, and about twice 

 their length from the genital covers, which are about three 

 fourths as long as the anal covers and situated very near the 

 anterior margin of the ventral plate. 



First pair of legs almost as long as the body, and each 

 succeeding pair slightly longer than the preceding one. Tarsus 

 of the first pair of legs somewhat glolujse at the di.stal enil; 

 coxte of the third pair globular, each bearing a large bristle 

 on its anterior end; tibicB of fourth pair each bearing on the 

 anterior di.stal margin a large bristle as long as the tibia it.self. 



Length, 0.50 mm.; breadth, 0.28 mm. 



Collected by the writer at Urbana, 111. Many sitecimens. 

 I find that my examples of this species agree with a European 

 specimen of iiifciis sent to me by Mr. Michael. 



Genus Hermannia Nicolet. 



Without lamella'; legs short and stout; ungues monodactyle; 

 dorsum of abdomen convex; genital and anal covers separate 

 and placed in a ventral plate. 



One species — histrinlK. 



HeniKun/iii hislridta Nicolet. 



1840. Nolhrus pnUiatn.t, C. L. Koch, Crust. Myr. Aracli., Ilpft f.O, Tal). 4 



(Nymph). 

 ISHO. JliTtiKinnia histriula, Michael, Jour. Roy. Micr. Soi'., \'ol. III., p. 42. 

 1SS5. XidhraK lii>:lria(its, Berlese, Acari, Myr., Scorp., Fasc. XVH., Nr. 9. 

 1,S88. llinnanuiu hUti-hild, Wiohael, Brit. Urilj., Vol. II.. p. 4GL', PI. Xl.ll., 



Fig. S-14. 

 1898. Ihrinann'm hixlriatu, Michael, Das Tier., Lief. :i, p. (i;i. 



Dark chestnut-brown; integument I'oiigli, and in some 

 places slightly pitted. 



Cephalothorax fully half as long as the abdomen, with two 

 chitinous ridges on the dorsal surface, which, beginning at the 



