A. C. OUDEMANS, NOTES ON ACARI. 263 
ventrally probably to hold the female during the coitus. Finally 
we have here again a sucker-plate, like in Tyroglyphidae. It 
is very long, includes the abdominal lobes and even the genital 
aperture; it is narrower in its fore-half. Genitalaper- 
ture between trochanteres IV. Penis short, shorter than 
the trochanteres IV, crooked. No epiandrium. Anus 
terminal, i.e. touching the incision. Anal suckers flan- 
king the anus, with their centres a little before the line that 
goes through the top of the incision; as they stand on a 
slope, they seem to be oval, but they are round and well 
developed. Hairs. Inside of the proximal ends of epimera II 
a pair of short and thin hairs. Inside of the distal ends of 
epimera III a pair of ditto. Inside of the proximal ends of 
epimera IV a pair of ditto. Before the anal suckers a pair 
of very short and very thick, Y-shaped hairs. Lateral hairs on 
the second lateral shields shorter than half of the leg III. 
Their accompanying hair is a pin, situated a little before and 
inside of the long one. 
Mandibles curious, as they are provided with a dorsal 
horizontal external blade or lamella or crista. 
Maxillae. The two subcapital chitinous knobs are less 
distinct, yet visible. Palps normal. 
Legs normal, i. e. shorter or equal to the greatest 
width of the body, with short almost square articles, prov- 
ided with low dorsal cristae on femur, genu and tibia, and 
with large caruncles. Tarsi II and IV with inner rather 
strong claw. Legs III and IV apt to be bent inward to simu- 
late a pair of claspers, apparently to hold the female during 
coitus. 
Habitat: Totanus flavipes. 
Patria. Probably the same at that of the bird. 
Found by Dr. E. L. Trouessart on a bird-skin of 
Guyana. 
Type in collection Trouessart. 
Tijdschr. v. Entom. XLIX. 18 
