ANNAES OF SCOPMPISH NATURAL: EASTORY? = 30 
are obsolete or entirely absent, but the outer branches are 
three-jointed. Inner branches of the fourth pair (usually) 
two-jointed and the outer branches three-jointed. Fifth pair 
foliaceous, small, two-branched (basal joints sometimes 
coalescent and forming a broad lamelliform plate ; the fifth 
pair in the male are smaller than those of the female. One 
ovisac, containing a few large ova). 
EEETOPSYULUS ROBERTSONI, SP. vov. (Plate Il. F igs, I-14). 
Description.—Kemale.—Length -63 mm. (#5 of an inch). 
Body elongate and very slender. Anterior antennze moder- 
ately stout, shorter than the first cephalothoracic segment, 
seven-jointed : the fifth joint is shorter than any of the others, 
as shown by the formula :— 
Eroportional length of joints 22° 13 410 7 
Number of the joints I Den ages 
5 Ot 
Se 1G By 
Posterior antenne nearly as in Leptopsyllus typicus, T. Scott. 
Mouth organs also nearly as in that species, except that the 
mandible-palp is two-branched ; the distal branch, which is 
slender and elongate, has the end joint equal to about two- 
thirds the length of the first joint ; the proximal one-jointed 
branch is nearly as long as the first joint of the distal 
branch. The first pair of swimming feet are similar to 
those of Leptopsyllus typicus, but the inner branches are rather 
longer than the outer, and there is a fascicle of moderately 
long sete on the inner margin of the second basal joint (Fig. 
9g). In the second and third pairs the outer branches are 
somewhat similar to those of Leptopsyllus typicus ; the inner 
branches, which are rudimentary, are two-jointed, the end- 
joint being very small (Fig. 10). The fourth pair are similar 
to those of Leptopsyllus typicus. The basal joints of the fifth 
pair are coalescent, forming a broad lamelliform plate, the 
end of which is broadly truncate and slightly concave, the 
obtuse angles being each furnished with two small sete, and 
on each side near the base of the joints the outer margin is 
produced into a broadly rounded lobe terminating in two 
sefae; the length of. the basal joints is equal to about two- 
