O. lahorensis 69 



Capitulum ( ? about 1*2 mm. long) ; chelicerae (see digit, Fig. 98) ; 

 hypostome (Fig. 99) long, lanceolate, indented at the end, 2 | 2 files of 

 eight or ten teeth, the internal files far apart ; palps cylindro-conical, the 

 articles 300 fi, 250 /x, 150 fi and 200 fi respectively; long hairs, curved 

 forward, on dorsal surface of articles 2 and 3. Legs medium, coxae 

 (Fig. 96) sub-conical, coxae I and II slightly separated, the others 

 contiguous ; tarsus I (Fig. 100) with three blunt dorsal prominences ; 

 tarsi II, III and IV with very short proximal false articulation, promi- 

 nent dorsally, and with progressively longer blunt spurs near the distal 

 end of the distal false-articulation. 



Nymph : Neumann has recognised two nymphal forms : 



First nymph : 5 - 5 x 2"7 mm. Integument with very fine folds, with 

 a few spiniform hairs, discs hardly visible; the ventral grooves only 

 faintly marked, except the ano-marginal. No trace of sexual aperture ; 

 camerostome shallow ; legs short and thick. 



Second nymph : attaining 11x6 mm. Integumental folds coarser 

 and polyhedric ; discs visible, hairs almost absent ; a punctiform sexual 

 orifice 1 ; camerostome deeper, but less completely filled by the capitulum ; 

 legs like the adult, but with spurs less pronounced. 



Taken from Ovis aries in Lahore by E. Montgomery (all were collected 

 in the nymphal stage in January, 1906, but six weeks afterwards some 

 gave rise to adults. Collection of the Liverpool School of Tropical 

 Medicine). Our figure is drawn from a living $ kindly sent to one of 

 us by Mr Newstead (Liverpool). We received a £ and % . The £ fed for 

 25' on a fowl 7. v. 1907, for 45' on 2. xii. 07 and was killed and preserved 

 27. iii. 08. The ? refused to feed 7. v. and 11. vi. 07, she began to 

 oviposit 27. xi. 07, fed for 2 hours 20' on 2. xii. and began again to 

 oviposit 9. xii. She lived until iii. 08 when she was lost. All the 

 eggs, about 80, proved sterile. The ticks refused to feed on other 

 occasions (G. H. F. N.). Our specimens agreed so closely with the de- 

 scription of 0. tholozani given by Laboulbene and Megnin that we 

 referred it to this species, from which, however, as Neumann informs us, 

 it differs in the structure of the integument and tarsi, L. and M.'s figures 

 of the tarsi being inaccurate. 



1 Doubtless but an " Anlage," in any case imperfect. 



