276 (db. a. c. otidemans) a sarcopteb of a bat. 



Measurements: 



Length of egg 470 mikrons. 



Breadth of ditto ' 120 » 



Length of larva 173 » 



Breadth of ditto 124 » 



Length of full grown female delineated in fig. 7 1383 » 



Breadth of ditto 1170 » 



Comparison loltJi other itch mites. That we have here to do 

 with a true Sarcoptide , is prooved hy the shape of the eggs , hy 

 the shape and particularities of the larvae, and by those of the 

 adult female, by the presence of epimera, by the legs with five 

 joints and by the chelate mandibles. 



As the posterior legs are subabdominal , it agrees more with 

 Sarcoptes Latr. sensu lato , than with Psoroptes Gerv. and Cho- 

 rioptes Gerv. As males are unknown , nothing can be said of.genital 

 suckers nor of abdominal appendages. 



It agrees with Sarcoptes Latr. sensu stricto by having 1° 

 triangular protuberances on the skin of its back ; 2° its fourth 

 pair of legs ending in a long flexible hair ; 3° the anus surrounded 

 by at least 6 pairs of hairs , 4° the epimera of the first pair of 

 legs coalesced together. In all the otVier generic characters it differs 

 from Sarcoptes. 



It agrees with Notoedrus Rail, by having 1° the anus quite 

 dorsally , 2° its fourth pair of legs ending in a long flexible hair, 

 3° the epimera of the first pair of legs coalesced together. In all 

 the other generic characters it differs from Notoedrus. 



It agrees with Knemidocoptes Fürst, by having 1° the first and 

 second pair of legs not provided with ambulacra , but only with 

 strong claws, 2° the third pair of legs not provided with a long- 

 hair. In all the other generic characters it differs from Knemi- 

 docoptes. 



For the present animal therefore which , as is shown above , 

 cannot be placed into one of the genera adopted hitherto, without 

 changing their diagnoses, 1 propose the generic name of 



