NEW PARASITIC MITES. 



797 



its posterior end is narrowed and practically truncate, the hairs 

 on its surface are not very long, one or two of the marginal ones 

 posteriorly are a little longer, however, and the pair at the end 

 considerably longer than the others. Ventral jjlate with about 

 twenty-five hairs on its surface, including the posterior unpaired 

 one ; it becomes greatly enlarged in wudth behind the last coxfe 

 and is not divided by any transverse line. Hairs on venter very 

 few in number and of moderate length (not very long). Movable 

 finger of chelicera only about half the length of immovable one. 

 Peritreme short, onl}^ reaching the second coxa. With the excep- 

 tion of a long slender spur on the anterior surface of the second 

 coxa, the coxa? are without spurs or spines. 



Length of body (without capitulum) "59 mm. 



Host : The name of the host is not mentioned on the label, 

 Kolenati says the species is found on Minioioterus schreibersii and 

 RhinolopJuis clivosus. 



Note. — It seems probable to me that this mite is the male of 

 Liponyssus ellipticus Kolenati, but it is better to keep the names 

 separate until proof of this is forthcoming. 



Family Tarsonemid^. 

 Genus Tarsonemus Can. & Fanz. 

 Tarsonemus translucens Green. (Text-figs. 38, 39, 40.) 

 S . Body of the male i-ather long and narrow, being more than 

 twice as long as its greatest width ; it is widest at the point at 

 which the posterior pairs of legs are inserted, this part of the 

 abdomen being slightly wider than the cephalothorax. Posterior 

 end of abdomen narrowed and rather tail-like, each of the last 

 segments being considerably narrower than its predecessor. The 

 curious anal structure at the extreme end of the body is only 20 ji 

 wide, the segment preceding it 27-30 /t wide, and the third from 

 the end 40-50 /a wide. When viewed laterally the body is seen to 

 be very high at the level of the posterior legs, but anteriorly it is 

 much lower and the abdomen is narrowed posteriorly as noted 

 above. Hairs, on body all rather short. Legs. Second leg a 

 little longer than the first and the third is the longest. Fourth 

 leg really the shortest, but its position at the highest and widest 

 part of the body makes it appear longer than the first and second 

 legs : this leg is stouter than the others and its penultimate 

 segment has an angular internal spur or process distally, there is 

 also a long stout bristle situated near it ; fourth tarsus curved or 

 bent and a little beyond the middle of its length it is furnished 

 with a very long fine liair, after which the segment becomes 

 slightly reduced in width. Tarsus of the three first legs with a 

 pulvillus, but the terminal segment of the fourtli has only a short 

 knob-like structure at the end, it is possible that this is the 

 rudimentary tarsus. There is a stout striated sensory seta on 

 the anteinor tarsi, that on the second tarsus being larger than 

 the one on the first. There are also four slender but stifi' sensory 

 setae on the first tarsus. 



