224 A. e. OÜDEMANS, NOTES ON ACARI 



row coüvex forward and belonging to the 6^*^ postoral seg- 

 ment. Then follow two jiair of bristles belonging to the 7"^ 

 postoral or genital segment ; the inner pair is large, the outer 

 pair small. Then you observe the minute round anus, sur- 

 rounded by the three circumanal hairs, of which the postanal 

 one is very long, broken off in my specimen ; it may have 

 been as long as the creature's greatest breadth. Then 4 minute 

 postanal hairs, quite on the edge. 



E p i s t m a (Fig. 3) tricuspidate, cusps almost equal in 

 length, sharp. S t y 1 i long and strong. 



Mandibles short, reaching, when wholly retracted the 

 second pair of dorsal hairs. Chelae (Fig. 4) with distinct 

 basal and dental sense organ, rather slender ; upper jaw with 

 two small incisors, three small canines, and a rounded molar. 

 Lower jaw with a strong incisor and three canines increasing 

 in size backward. P u 1 v i 1 1 u ra : a row of hairs. 



Maxillae, lì y p o s t o m a (Fig. 5) with only two pair 

 of bristles, about 7 transverse rows of minute pins, usual horns, 

 and wide, longly-fringed inner malae, of which the inmost 

 slips cross. Palps; dorsally : the femur has inward and distally 

 a minute transparent pin. Ventrally (Fig. G) the trochanter 

 bare ; the femur with a bristle outward and a bifid hair 

 inward, of which the hinder branch is bristle-like, the fore- 

 bran che knife-like, with sharp edge forward ; the genu with 

 knife-shaped hair inward, with sharp edge forward ; tibia and 

 tarsus normal. 



Legs (Fig. 1) rather thick, resp. 430, 320 and 320 a«, 

 without any noticeable particularities. Left paratarsus III 

 (Fig. 7) without proximal hair, as far as I could observe ; 

 outer distal hair dorsal, inner one ventral; superunguinal 

 sticking pieces lanceolate, ending in a hair ; subunguinal 

 caruncle small, scarcely visible above and between the claws. 



Habitat in toad-stools. 



P atri a France (Bure). 



