ACARI 533 



above tlie level of the surrounding cuticle, tlie whole structure 

 conveying the idea of being a rudimentary remainder of a 

 projection, at the top of which the bristle was once inserted, 

 but which is now fused with the tibia, and nearly obUterated. 



Eugamasus cornutus (G. et R. Can.) var. pygmea nov. var. 



(Kig. 21-25). 



Département de VAriège {France) — Rivière souterraine 

 de Verna jouis, commune de Verna jouis, canton de Varilhes, 

 2rd November 1908; N^ 244 A, 2 cr, 2 9. 



L^partemeiit des Pyrénées-Orientales {France). — Grotte de 

 Corbère, commune de Corbère ; canton de Millas, 9th Novem- 

 ber 1908 ; NO 246, 2 nymphse. 



Grotte de Pouade, commune de Banyuls-sur-Mer, canton 

 d'Argelès-sur-Mer, 3rd February 1909; N» 254, 1 nympha. 



Grotte de Niaux, commune de Niaux, canton de Tarascon- 

 sur-Ariège, 12th September 1909; N» 291, 1 c.. 



Distribution of the main form : Italy, Netherlands. 



Maie : Length : 600 [i. Width : 310 y.. 



Female : Length : 600 a. Width 350 y.. 



The variety is consequently considerably smaller than the 

 main form, which attains a length of 1000 u, by a width of 

 600 to 750 ij.. 



In the following only the différences from the typical form 

 will be pointed out. 



MALE. 



The dorsal shields are provided with more and longer hairs ; 

 thus, on the anterior shield there are in ail 20 pairs of setiform 

 hairs, which are of subequal length, except the shoulder 

 hairs, which are half as long again as the rest. Berlese draws 

 only 16 pairs of hairs, 6 pairs of which are very small (1:4) 

 as compared with the others. On the posterior shield there are 

 about 25 pairs of hairs, while Berlese only dehneates 17 pairs. 



Gnathosoma. Epistoma (fig. 21) short and broad, three 



