482 NeiD Species of Ticks 
Tarsi abruptly attenuated; tarsi I unarmed, tarsi II, III and IV 
bicalcarate. 
Female: undescribed. The donor of the specimens gave a short 
verbal description of the female of this variety, from which it may be 
presumed that it conforms very closely to the type. 
Origin : Rhodesia, South Africa. Host not specified. Described 
from 2 cT’s collected by Mr E. M. Jarvis, F.R.C.V.S., of the Dept, of 
Agriculture, Southern Rhodesia. 
Mr Jarvis furnished the following notes : 
This tick has become notorious among Rhodesian stock owners as 
the “ Pyaemia tick.” It is attributed to be the causative agent in the 
transmission of pyolymphangitis in equines; its bites are so severe as to 
cairse violent inflammation and sloughing of the mammae in cows. It 
also attacks the heads of native children, causing sloughing of portions 
of the scalp. 
Native districts: Umtali, Inyanga, Makoni, Melsetter, Portuguese 
Baruwe, Portuguese Manica and the Zambesi Co.’s Territory. The tick 
is found chiefly in the bush veldt, at elevations of 2000 to 3000 feet, 
seldom above 4000 feet. 
Amblyomma fiebrigi sp. n. 
Figs. 3, a-g, and 4, a-e. 
Male: body 3'4 x 2’37 mm., ovate, moderately elongate. 
Scutum dull brown with indistinct pale spots (indicated in the 
figure by dotted outline); extreme margins and intervals of festoons 
darker brown; scapular angles almost pointed. Marginal groove 
absent. Cervical grooves in the form of short deep oval pits. Puncta- 
tions numerous, rather small, regularly distributed. Eyes flat, large, 
indistinct. Festoons well defined, longer than broad. Capitidum 
{1. 1 mm.); basis capituli rectangular, with rounded lateral margins; 
twice as broad as long; postero-lateral angles barely salient. Palps 
short, clubbed ; article 3 more than half as long as article 2. Hypostome 
spatulate, extremity rounded, emarginate, dentition 3 j 3. Venter 
wrinkled, glabrous. Genital orifice opposite coxae II. Extremities of 
circumanal groove prolonged anteriorly and fused with the genital 
groove on either side. Spiracles relatively large, broadly elongate 
comma-shaped. Legs short and stout. Coxae I with two short stout 
contiguous spurs of which the external is slightly the longer; coxae II, 
III and IV each armed Avith a short blunt spur, largest on coxae IV 
