1915] 



Bankts — Tico Mexican Mijrmecophilous Mites 



61 



Fig. 1. Galumna acutifroiis 



sp. nov. Cephalothorax above. 



ORIBATIDiE. 

 Galumna acutifrons sp. nov. 

 Dark brown. Body large, globose, cephalothorax small, in front ending in an 

 acute point, and a minute point each side of it; no lamellae, no superior bristles, 

 inferior bristles curved toward each other, 

 pseudostigmatic organ rather thick, short, 

 semiclavate, tapering at tip. Abdomen with- 

 out hairs, on base is an oblique dark spot each 

 side; wings large, long, and deep, almost 

 pointed in front, lower anterior edge scarcely 

 emarginate, some radiating lines from base. 

 Legs with only simple hairs, about as in G. 

 emarginata. Sternal plate with two lines on 

 each side; genital aperture slightly narrower 



behind than in front, about twice its length in front of the larger anal aperture, 

 the latter much broader behind than in front. Length .75 mm. 



From San Miguel, Hidalgo, Mexico, with Pheidole vasliti acolhua, 



Mann coll. 



Parasitid.e. 

 Neoberlesia mexicana sp. nov. 

 Yellowish. Body rather slender, in male more than twice as long as broad, 



in female almost twice as long as broad, tapering each way. Dorsal 



shield entire, with few scattered 

 bristles, mostly behind. Legs 

 slender, second pair heavier, 

 especially in the male, the fourth 

 pair much the longest, in male 

 the femur IV has two long spines 

 behind and a minute tooth nearer 

 base, femur III with two stout 

 bristles behind, otherwise legs 

 have few, short, fine hairs, tarsi 

 I and II with some short stout 

 spines at tip. In male the ven- 

 tral shields all united, but suture 

 distinct between anal and ventral, 

 anus nearer to tip than to base of 

 shield; in female anal united to 

 the ventral, vulva between coxae 



Fig. 2. Neoberlesia mexicana sp. nov. Venter ^^^'' °°^^ ^°« ^""'^^ ^'^ sternum; 

 of female, leg II, and femur IV of male. Pentreme long and only slightly 



curved. Length 1.1 mm. 



From San Miguel, Hidalgo, Mexico, with Pheidole vasliti acolhua, 

 Mann coll. 



