274 (dr. a. c. oudbmans) a sarcopter of a bat. 



bar-shaped hairs on each side of the anus. In a few specimens 

 these 12 hairs were directed to the median line and completely 

 covered the aaus. 



On comparing figure 17 with fig. 9 we observe that the two 

 flexible hairs correspond with the two little hairs of the adult 

 female just behind the head, that the twelve bar-shaped hairs sur- 

 rounding the anus correspond with the twelve exceedingly minute 

 hairs near the anus of the adult female , and that the two long 

 bar-shaped hairs have disappeared in the adult female. 



Moreover the adult female shows on its posterior part behind the 

 level of the anus seven hairs for which we in vain seek in the 

 larva. The skin of the adult is as smooth as a mirror, whilst 

 that of the larva — at least on its dorsal surface — is wrinkled. 

 The skin of the larva does not appear to have any triangular 

 spines, whereas that of the adult female shows two large masses 

 of them. 



The (( cheeks » of the larva show a segmentation in three joints. 

 The second and thii'd joints of the palpae each bear a little hair. 

 Each joint of each leg bears a hair; the last joint moreover a 

 strong and short claw and a pedunculated ambulacrum. 



The bind (third pair of ) legs of the larva seems to be composed 

 only of four joints (see fig. 18), the last of which has a very long 

 and flexible hair, a very short one and a strong claw. 



Fig. 18. The epimera of the first pair of legs touch one another 

 in the median line, do not, however, coalesce. On the ventral 

 surface we distinctly discern that the legs of the first and second 

 pair consist of five joints. The skin here is smooth and quite 

 4estitute of hairs. 



Nymphae and males were unfortunately absent. 



Biological notes. The first fact which does astonish us is that 

 the animal, though provided with such formidable digging instrum- 

 ents does not burrow holes; indeed it seems to remain invariably 

 on the same spot. 



The second fact is, that such an animal lives in the very delicate 

 membranaceous ears of the bat, instead of in horny scales of the 



