284 
Sarcoptic Scabies 
Parvulus. 
Tierreich : Canestrini, 1894. 
Body (Rumpf) very small. 
$ 288 x 216/a. 
d 168 x 128/x. 
In outer ear 'passage of Sus domesticus. 
This species (or variety) is merely nominal, the name having been given in 
1894 by Canestrini to a very small form found by Guzzoni in 1877 in the ears 
of a pig. Gurlt and Spinola, Gerlach, Megnin and Railliet (1895, p. 635) 
appear to have come across the same form, but there is no description of it. 
Neumann (1905, p. 177) states definitely that there is no reason to believe in 
the existence of a second pig sarcopt, but he does not explain the great 
difference in size between the particularly large form usual on the pig and 
the minute form alleged by several observers to occur in the ears of that 
animal. 
Furonis. 
Tierreich'. Railliet, 1893. 
Dorsal scales dense (dicht), slender ( fein ); an anterior rugose area; epian- 
drium firmly united to epimere. 
$ 330-420/x x 270-300/x. 
d 210-220^ x 160-180/x. 
Mustela furo. France. 
The measurements are those given by Railliet (1895, p. 656), who says 
the Sarcoptes was first described by Peuch in 1869, and that it is very common 
on the ferret, which probably contracts it from rabbit burrows frequented 
by polecats. It principally attacks the head and legs, but sometimes invades 
all the surface, causing brown or yellowish crusts. On the feet, the crusts 
especially occur on the plantar surface and at the base of the claws, which 
often become abnormally long and turned upwards. Peuch, though he made 
many attempts, did not succeed in transmitting it either to man or to the dog. 
Peuch’s account was published in 1869 and this I have been unable to 
consult, but it seems to be chiefly clinical, and the meagre details obtainable 
are those furnished by Railliet (1895, p. 656). He calls the dorsal scales 
minces et serrees, and says that the rugose area is faint. 
Cuniculi. 
Tierreich: Neumann, 1892 (Rev. Vet., March, 1893). 
Dorsal scales numerous, sharp, as long as broad; no rugose area; notogastric 
spines broad at the base, bluntly pointed; epimere of leg 2 of ? strongly bent 
outwards; front arm of eviandrium rudimentary, not reachinq the epimere. 
$ 410-440/x x 320-340/x. 
d 230-250/x x 170-180/x. 
Lepus cuniculus. France, Italy. 
