K. Jordan and N. C. Eothschild 
75 
18 bristles. The hairs on the outside of the tarsi are likewise more 
numerous. For the first and second midtarsal segments see PI. Ill, 
fig. 12. 
Modified segments. </. The eighth sternite is ventrally produced. 
The bristles at and near the dorsal edge of the clasper are more numerous 
than in the two preceding species, the ventral edge bearing 3 bristles 
distally to the insertion of the “ finger,” and one proximally to it. The 
ninth sternite has one small bristle at the apex and 3 long ones before 
it, the most proximal one of the three being the longest, there being 
also some more small bristles further proximad (PI. VI, fig. 9). 
Length. </ 2'6 mm. 
One from Charuplaya, Bolivia, found by P. 0. Simons on Speothos 
vinaticus, together with a of R. australis, January 1897. 
In contradistinction to the five preceding species in which the fifth tarsal 
segment is long (PL III, fig. 10), in all the following species this segment is short 
(PI. IV, fig. 4). 
(6) Rhopalopsyllus bohlsi Wagn. (1901). 
(PL IV, fig. 4; VII, fig. 7.) 
Pule.v bohlsi Wagner (1901, p. 21, n. 5, t. 1, fig. 6, ?, Paraguay, 1 ? ). 
Rhopalopsyllus bohlsi Baker (1905 a, pp. 130, 143). 
Head. The frons bears an anterior row of 5 or 6 bristles which are 
very much thinner and shorter than the 3 eye-bristles. The first row 
of the occiput consists of 12 to 14 slender bristles, the second row of 16 
and the third of 14 to 16, on the two sides together. In the </ there 
are, moreover, numerous short slender bristles in the dorsal groove of 
the occiput. 
Thorax. The pronotum has two rows of bristles, the first consisting 
of about 16, the second of about 18 bristles, on the two sides together, 
not counting the small hairs which are situated in between the bristles 
of the second row. The numbers of bristles in the two rows of the 
mesonotum are about 22 and 16 respectively. The metanotum has 
three rows of about 16, 26, 16 bristles. On the pleura of the mesothorax 
there are 5 bristles, while the epimerum of the metathorax bears 10 or 
11 in two rows (6 or 7, 4 or 5). The metanotum has 10 to 15 short 
apical spines. 
Abdomen. The tergites bear each two rows of bristles, the anterior 
segments having a few additional bristles on the back. The numbers of 
bristles in these rows are:—i. 16 to 22,12 or 13; ii. 22,19 to 21; iii. 22 
to 24, 19 or 20; iv. 18 to 21, 18 to 20; v. 15 or 16, 18 to 20; vi. 11 in </, 
