Annals of the Transvaal Museum. 
145 
AMBLYOMMA CRENATUM, NEUMANN. 
The Ruffled Tick. 
Amblyomma sublutum , Neumann (1899). 
Amblyomma crenatum , Neumann (1899). 
Plate XII , figure i. 
Male.— Body a short oval, sides rounded, 7 mm. long (without 
rostrum), 6.5 mm. wide. Shield a little convex, dirty yellow, with a thin 
whitish bloom in the scapular angles and on the sides'; in the middle a 
brownish, narrow hand, prolonged to the lateral margin by a wider band, 
mot distinctly limited ; near the posterior quarter, a median irregular 
spot of the same colour, joined in front to the transverse border by two 
curved lines, and giving off behind three short prolongations, of which 
one is a median. Eyes large, flat, scarcely paler than the shield and finely 
bordered with brown ; cervical grooves short and deep ; marginal groove 
narrow ; not very deep, contouring the posterior margin, from which it 
is twice as far removed as the lateral margin ; festoons narrow, at least 
twice as long as wide ; punctuations numerous, large, equal, not very 
deep, regularly distributed, and of the colour of the shield; among them 
.some punctuations more numerous, very fine, superficial, brown. A 
posterior constriction, well marked, at the level of the stigmatic plates. 
Ventral surface of the same colour as the shield, glabrous ; posterior 
festoons very apparent, not limited in front, marked in the middle by 
diffuse brownish spots; stigmatic plates large, whitish, comma-shaped, 
with tail short, projecting outward. Rostrum very large (3 mm.), 
brownish ; base a little constricted behind, posterior angles scarcely 
salient, very finely punctured ; hypostome armed, in its anterior 
third, with three rows of strong teeth on each half ; palpi long, brownish, 
the second article more than twice as long as the third. Legs very long, 
strong, intermediate articles yellowish white, the fourth reddish in the 
middle, the fifth in its proximal half ; coxae I divided into two large 
spines, the outer strong and sharp, the inner wide and a half shorter ; a 
long blunt spine on coxae IY ; tarsi relatively long, with two strong- 
consecutive spurs. 
Female. — Body in a short oval ; sides rounded ; flat ; 9 mm. long 
(without rostrum), 8 mm. wide. Shield (XII, i) triangular, a little wider 
(5.2 mm.) than long ; cervical emargination prolonged in front by two 
points, anterior margins a little oblique, the latero-posterior almost 
straight, posterior angle wide and a little rounded ; cervical groove 
at first straight and very divergent, then bifurcate, the inner branch 
bordering on the median area, the outer short ; median area a little 
salient ; punctuations numerous, unequal, abundant, and confluent about 
the eyes ; ..colour reddish yellow, with a yellowish white bloom op the 
lateral areas, along the cervical margin and in the posterior angle ; a 
small brownish mangial spot on each side at the posterior third of the 
lateral border. Eyes large, flat, relatively anterior, yellowish. Dorsal 
surface (XII, i) reddish brown, pitted with numerous and lar^e punctua- 
tions ; a marginal groove, bordering the posterior festoons in front, which 
are longer than wide, inner margins longer than outer, giving a crenulate 
aspect to the posterior margin of the body. Ventral surface of the same 
colour ; punctuations finer, surmounted by fine hairs ; stigmatic plates 
large (2.6 mm. long), triangular angles rounded. Rostrum (XII i) very 
