118 (dr. a. c. oudemans) 



This Trichotarsus is quite different in shape from Trich. xi/locopae , 

 osmiae, lißlls, al/keni, and japonicus, and perhaps resembHng 

 Trichotarsus trifiUs , for the description given by Canestrini in 

 Termeszetrajzi Fiizetek, vol. 20, p. 473, fitts exactly on my 

 specimen. Yet, I believe that my species is a new one, as Ca- 

 nestrini has not mentioned the most striking characters. They are 

 1. there is a transverse furrow between the 2d and 3d pairs of 

 legs. 2. There are two dorsal shields, one cephalothoracical and 

 triangular, and one abdominal and nearly half an oval in shape. 

 3. The sculpture of the dorsal surface widely differs from that of 

 all the other Trichotarsus, as may be seen in my fig. 22. 4. Tlie 

 tarsus of the first three pairs of legs bear four leaf-like hairs each. 

 5. the disk with suckers projects beyond the animal's hind margin 

 (fig. 22 and 23). 6. The chitinous frames on the ventral surface 

 of the animal show an arrangement as I have not yet seen in 

 Acari (fig. 23). 



Moreover we observe the following other peculiarities. There are 

 two minute hairs on the céphalothorax and two ditto on the ventral 

 surface between the epimera of the 2d and 3d pairs of legs and 

 close to the left and right border of the abdomen. Hind margin 

 of abdomen with three pairs of hairs of which the median ones 

 are the longest. Between the two epimera of the first leg . between 

 those of the third and fourth legs, and between the epimeron of the 

 fourth leg and the sucker-disk, the ventral surface shows minute 

 circular spots, which probably are pores. The tarsus of the 4th leg 

 bears 5 hairs besides the minute unguis, with which all the legs 

 are provided. The lengths of these hairs are 0,326, 0,253,0,145, 

 0,056 and 0,032 milUmeters. 



I propose the following change in the dichotomical table of Das 

 Tierreich, Demodicidae and Sarcoptidae , p. 148: 



a) Uebersicht der Arten auf Grund der Wanderlarven : 



An allen B. eine sehr schwache Kralle ; Umriss 



. , des Tieres oval ; Rücken ohne Borsten — 2. 

 1 ( ' 



An den 3 vorderen B. starke Krallen; Umriss des 



Tieres fast rund; Rücken mit Borsten — 3. 



