ACARI 579 



HYPOASPIS Can. 



H. aculeifer G. Can. 



(Fig. 94-97). 



Province d'Alger {Algérie). — Grotte Rhar Ifri, Djebel 

 Bou-Zegza, commune de Saint-Pierre, Saint-Paul, Algiers, 

 12 septembre 1906 ; N» 169, 1 9. 



Distribution : Italy. 



Of this very cliaracteristic species there is one female in the 

 collection, containing a single large egg. 



There are a few additions to be made to Canestrint's and 

 Bbrlese's descriptions, besides which the présent spécimen 

 differs slightly in some respects. 



Length : 570 u.. Width : 450 ,v. ; it is thus sUghtly shorter 

 than Canestrini's spécimens. 



The dorsal side agrées perfectly Avith the typical for m. 



Gnathosoma. Epistoma shaped as in the typical form. 



Mandibles (fig. 94), on the other hand, differing fromthose 

 deUneated by Berlese ( ). In the lower jaw there are, 



besides the terminal tooth, two conical teeth, as long as they 

 are wide at the base ; the posterior one is larger than the ante- 

 rior, and placed in the middle, whereas the anterior one is 

 placed a little doser to the posterior than the terminal tooth. 

 Between the teeth the edge is perfectly straight. Upper jaw, 

 as usual, slightly longer than the lower one, with two small 

 teeth at the back of the terminal tooth ; behind tlicse, a small 

 incision ; then a very small, and then a large tooth, on a level 

 with which pilus dentarius is inserted. Behind, there is a 

 straight edge with 6 to 8 small, subequal teeth (6 in one, 8 in 

 the other chela); behind this, the edge rises gradually back- 

 wards, with two short, but at the base rather wide, teeth. 

 Pilus basalis small ; flagellum of usual shape. 



The hypostoma and the palpi do not exhibit anything 

 remarkable. 



