A. vespertilionis 39 



It is probably Argus fischeri Audouin. (Caris elliptica Kol. was found 

 on Myotus murinus ; Cans longimana Kol. on Miniopterus schreibersi 

 and Rhinolophus clivosus ; Caris decussata. Kol. on Myotus murinus and 

 Rhinolophus hippocrepis ; Cans inermis Kol. on Brachyotus dasycnemus 

 and Synotus barbastellus.) 



Neumann's description of the larva is based on the examination of 

 four specimens; two collected in Paris by E. Simon, from Vesperugo 

 pipistrellus, one taken by Dr Buysson from Plecotus auritus at Bronet- 

 Vernet (Allier), and one from Vesperugo kuhli at Chegga (R. Blan- 

 chard's Coll.). Latreille's Caris was taken from Vesperugo noctula. 

 Argas pipistrellae Audouin, and Caris vespertilionis Gervais, were 

 taken from V. pipistrellus. Argas fischeri Audouin, collected in Egypt, 

 is only known through Savigny's figure. There are larvae of A. vesper- 

 tilionis in the British Museum ; Mr E. G. Wheler's collection contains 

 larvae and nymphs collected at Puttenham (1903), and we have also 

 obtained larvae taken from V. pipistrellus from Histon, Cambridgeshire, 

 11 May, 1905 and 29-30 July, 1908. 



Genus 2. ORNITHODOROS C. L. Koch, 1844. 



Synon. and Lit.: Ornithodoros Koch, 1844, p. 219; 1847, p. 11. — Fiirstenberg, 1861, 

 p. 208.— Canestrini and Fanzago, 1877, p. 194.— Canestrini, 1890, p. 531 ; 1892, 

 p. 582. — Trouessart, 1892, p. 47. — Neumann, 1896, p. 3 et seq. — Lounsbury, 

 1899, p. 240.— Ward, 1900 a, p. 196 ; 1900 b, p. 437.— Salmon and Stiles, 1901, 

 p. 407.— Neumann, 1901, p. 256.— Banks, 1904, p. 45.— Donitz, 1906, p. 145.— 

 Pocock, 1907, p. 189.— Banks, 1908, p. 16. 



Argas (Ornithodoros) Murray, 1877, p. 183. 



Ornithodoros Karsch, 1878, p. 321.— Marx, 1892, p. 233; 1895, p. 199.— Osborn, 

 1896, p. 255.— Morgan, 1899, p. 137.— Neumann, 1908, pp. 17, 26. 



Rhynchoprium Marx, 1895, p. 199. — Osborn, 1896, p. 255. — Neumann, 1896, p. 42 

 (Rhynchoprium a misprint). 



Ornithodorous Koch : Morgan, 1899, p. 136 (sic). 



Alectorobius Pocock, 1907, p. 189 (see Ornithodoros talaje). 



Ornithodorus of numerous writers since Koch. 



Generic Characters. Body flat ivhen unfed, but usually becoming 

 very convex on distention. Anterior end more or less pointed and hood- 

 like. Margin thick and not clearly defined, similar in structure to the 

 rest of the integument, and generally disappearing on distention. 

 Capitulum sub-terminal, its anterior portions often visible dorsally in the 



