82 
Annals of the Transvaal Museum. 
relatively large border (0.3 mm.) formed of irregular radiating 
wrinkles. On the dorsal surface numerous shiny pits, forming 
radiating lines in the posterior third of the surface, at the anterior 
quarter of the length two large oval pits close to the median line, 
about them an interrupted circle of small pits, outside this circle 
in nearly all of the anterior quarter, up to the margin, numerous, 
unequal irregular pits, mostly small and continued behind by two 
or three rows within the margin. Ventral surface a little concave, 
with shiny pits not very apparent ; anus about the middle of the 
length, opposite the stigmatic plates, which are scarcely its diameter; 
sexual orifice very small, opposite the posterior extremity of coxae I. 
Rostrum very small (0.5 mm.), very near the anterior edge, and 
removed from coxae I; its base longer (0.5 mm.) than wide, lodged 
in a cavity; hypostome narrow; palpi short. Legs short; lines of the 
coxae distant from each other, enclosing between them about one- 
third of the width; coxae I distant from coxae II; tarsi I with a very 
large prominence near their extremity, the others terminating in a 
feather edge, with the dorsal, sub-terminal prominence almost 
obsolete. 
Hosts . — Probably fowls and birds. 
Habitat. — South Africa (probably north of the Orange River); 
Basutoland. 
I have never seen specimens of this species, and the description 
is, therefore, taken from that of Neumann. Professor Neumann nas 
recently noted that his A. kochi differs slightly from A. transgarie- 
pinus, in having the prominences on all of the tarsi, instead of 
only on tarsi I, as in transgariepinus, although not quite as prominent 
as on tarsi I, of this latter species. If this proves to hold true for 
both sexes, A. kochi will become a variety and not a synonym of 
A. transgariepinus. 
GENUS ORNITHODOROS, KOCH. 
O.rnith odor os , Koch (1844). 
Ornithodoros, Koch (Neumann, 1896). 
Body sometimes oval ; generally with lateral margins straight 
and parellel, or almost so, sometimes concave ; prolonged in front in 
an angle more or less marked from the point of insertion of the second 
pair of legs; rounded on the posterior margin. Hood recurved on 
the ventral surface, where it is hollowed out in a pit for the insertion 
of the rostrum with thick edges. Edge of the body thick, with the 
two surfaces not differentiated. Integument with prominent hemis- 
pherical papillae arranged in various designs ; the dorsal surface bears 
various depressions ; on the ventral surface folds and grooves con- 
stant ; two longitudinal folds known as coxal folds, similar, prominent, 
situated opposite the inner extremities of the coxae, and disappearing 
behind the last pair of coxae ; two similar longitudinal folds, known 
as sub-coxal folds, situated above and outside of the coxae ; a 
transverse pre-anal groove; another transverse post-anal groove; a 
longitudinal groove known as anal groove extending from the anus 
to the post-anal groove; eyes sometimes present. 
