0. tholozani 65 



ORNITHODOROS THOLOZANI (Laboulbene and 

 Megnin), 1882. 



Figs. 93, 94. 



Syn., Lit. and Icon. : Argas tholozani Laboulbene and Megnin, 1882, pp. 335-337, 

 Pis. XXII and XXIII ; the figures include : adult dorsum and venter, capitulum, 

 hypostomes ( $ and $ ), digits, palp, integument, tarsus ; larva (showing intes- 

 tinal caeca apparently passing into the legs), the ovum. — Blanchard, 1890. 

 —Neumann, 1896, p. 38, Fig. 35*.— Dubreuilh and Beille, 1896, p. 80, Fig. 8 

 (copied from Laboulbene and Megnin). — Braun, 1906, p. 373. O. 



{Argas papillipes Birula, 1895, pp. 38-44, Fig. 35 ; digits of <$ and $ ; referred here 

 by Neumann, 1901, p. 259. See 0. papillipes, p. 79.) 



Native name: "Kene"or "sheep bug" in Persia (Laboulbene and Megnin, 1882, 

 p. 329). 



Adults : Body (the </" varies from 4x2 mm. to 6 x 4 mm. ; the ? 

 from 8x4 mm. to 10 x 5 mm.), with lateral borders nearly straight 

 and parallel, tapering abruptly, but sinuously, to a rounded process 

 in front, and broadly rounded behind; a broad margin is marked 

 off from the rest of the dorsum by a well-defined marginal groove. 

 Integument coarsely shagreened, then, with numerous short hairs, 

 longer and more apparent anteriorly; hemispherical granulations 40 — 

 60 fi in diameter ; giving the effect of a network of meshes limited by 

 creased folds ; one mesh out of every 5 or 10 bears a long hair. Discs 

 similar to those of 0. erraticus, but relatively smaller; seven on the 

 anterior median prominence arranged in three rows (3, 2, 2), surrounded 

 by an irregular circle of similar discs whence a median row starts 

 posteriorly, double at its origin and reaching the posterior border. A 

 short row on each side, and other scattered discs. On the ventral 

 surface discs occupy the depressions and grooves. No eyes. Venter: 

 pre-anal groove deep, concave behind ; post-anal groove nearly straight; 

 median post-anal groove nearly reaching the posterior border; sexual 

 orifice in </" and $ between coxae II ; anal frame wider than long 

 (300 x 350 /i); anus with seven or eight long hairs on each side. Spiracles 

 (350 fi), crescentic. Capitulum : palps tapering, and not much longer 

 than the hypostome; chelicerae (digits, Figs. 93, 94). The hypostome 

 differs in the sexes : in the J 1 , it is somewhat spatulate and indented, a 

 crown of small teeth being followed by two rows of three teeth on each 

 side, the middle rows not far apart ; then three or four rows of simple 

 squamiform teeth ; in the $ , it is somewhat lanceolate, and the dentition 



N. I. 5 



