C. Warburton and G-. H. F. Nuttall 
71 
difference in size. The abnormalities which we have encountered as the 
result of examining a vast material are usually slight and infrequent. 
We have, however, come across a few specimens which appear to be 
worth noting. Thus, in two lots of Haemaphysalis punctata, taken from 
sheep at Littlebourne, Kent (March and April, 1905), and for which we are 
indebted to Mr W. F. Cooper, we discovered a number of gorged females 
which had a peculiar pear-shaped appearance owing to the expansion of 
the posterior portion of the body ; the anterior portion, comprising the 
legs, being but slightly distended. 
In Fig. 18 we depict an abnormality in a male Hyalomma aegyp- 
tium, measuring 3'3 mm. in length, exclusive of the capitulum. This 
specimen was found on the horse in Germiston, South Africa, in company 
with normal specimens which were sent to us by Dr B. Brock. For 
comparison, we include a figure (Fig. 17) of a normal H. aegyptium, 
drawn from a specimen in our collection. 
Fig. 17. 
Fig. 18. 
Fig. 17. Hyalomma aegyptium <S . Dorsum and venter. Drawn from alcohol specimen 
by Mr E. Wilson under the author’s guidance. 
Fig. 18. Hyalomma aegyptium S . Posterior portion of venter showing abnormality. 
(C. W.) 
Figs. 19 and 20 represent a normal specimen of Boophilus decolora- 
tus. Fig. 21 gives the outline of a B. australis </ in which the adanal 
shields of one side are reduced to the merest rudiments, the corresponding 
side being much larger than normal. This specimen came from Borles- 
gama, Ceylon, where it was found on a cat in December, 1906. (Sent 
by Colonel B. Skinner, R.A.M.C.) 
