148 
Annals of the Transvaal Museum. 
Nymphs. 
A. Eye-like reddish spot on each antero-lateral angle of shield, which 
is nearly colourless otherwise. .. . . .. laeve capense. 
A A. Shield dark reddish brown, except postero-median area, which is 
lighter, no reddish eye-like spot on shield .. . . exornatum. 
Larvae. 
A. Dorsal shield uni-colonr, no eye-like reddish spots present. 
exornatum. 
AA. Dorsal shield with eye-like reddish spots in antero-lateral angles. 
laeve capense. 
APONOMMA EXORNATUM. (KOCH.) 
The Lizard Tick. 
Amblyomma exornatum, Ivoch (1844, 1847). 
Ixodes flavomaculatus , Lucas (1846-51-67). 
Ophiodes ftavomaculcdus , Murray (1879). 
Ixodes varani, Lewis (1892). 
Aponomma exornatum (Koch) (Neumann, 1899). 
Plate XIV , figures a to i ; Plate XV, figures a to c, f. 
Male. — Body short, almost as wide as long, somewhat quadrangular 
•or orbicular, length 3 him. to 5 mm. (rostrum included), width 2.5 mm. to 
3.3 mm. Shield covers all the dorsal surface, glabrous, punctuations very 
.small, somewhat unequal, distributed over all the surface ; cervical grooves 
very short, wide and deep ; eleven posterior festoons with separating 
grooves short and rather shallow ; dorsal porose areas just below the 
middle of the length, small and widely separated ; ground colour of shield 
.a deep reddish brown, lighter on the edges, on this is arranged nine large 
metallic green spots, sometimes almost invisible, as follows : — Two short 
sub-triangular spots, one in each cervical angle, next the insertion of the 
rostrum ; two linear marginal spots, one behind each of the cervical spots, 
a spot inside each of these linear spots, converging anteriorly at about the 
same level, and extending backward, passing them laterally by a widening 
of their posterior ends ; two posterior spots separated by the median line, 
and close to the festoons a median spot, somewhat rectangular, and not far 
jiosterior of the extremities of the cervical grooves. Ventral surface (XIV, 
-a) reddish yellow ; many small equal punctuations, especially near the anus ; 
festoons showing slightly on the posterior margin ; sexual orifice rather 
wide opposite coxae II ; sexual grooves widely divergent behind coxae IV, 
reaching nearly to the margin ; anus vary far eaudad ; anal 
groove semi-circular, opening forward ; ano-marginal groove short ; 
.stigmatic plates large sub-triangular, elongate, postero-laterally, 
.narrow in front. Rostrum (XIV, b) narrow, base nearly twice 
as wide as long on dorsal surface, rounded on the sides; mandibles 
(XIV, c) with inner apophysis of digit, bearing a simple transverse 
qirocess ; outer apophysis with a single strong tooth ; hypostome spatnlate, 
with numerous denticles anteriorly,- followed by three longitudinal rows 
of teeth on each half, consisting of seven to eight teeth each, then a series 
of squamiform denticles cover the rest of the organ to near the base ; palpi 
