K. Jordan and N. C. Rothschild 
79 
(10) Rhopalopsyllus cavicola Wei/enb. (1881). 
(PI. IV, fig. 3.) 
Pulex cavicola Weyenbergh (1881, p. 274, Argentina, off Cavia leucopyga) ; Roth¬ 
schild (1906, p. 174, n. 3 — condtus). 
Pulex condtus Rothschild (1904 a, p. 615, n. 10, t. 10, figs. 38, 40, Bolivia, off 
Herodon boliviensis). 
Rhopalopsyllus condtus Baker (1905 a, pp. 130, 143). 
We only know the $ of this insect. The species is easily dis¬ 
tinguished by the very long rostrum. 
Head. The labial palpus consists of 5 segments, reaching beyond 
the apex of the trochanter. The first segment of the maxillary palpus 
is a little shorter than the second, while the third is one-third, or a little 
over one-third, the length of the fourth. The anterior frontal row of 
bristles contains 6 to 8 rather thin bristles, the fifth being the longest. 
There is one bristle beneath the eye, one behind the eye, and a row of 
3 in front of it. The occiput bears three rows of rather slender bristles. 
Thorax. The posterior row on the nota consists of 14 bristles, the 
anterior row of the pro- and mesonotum containing 12 bristles on the 
two sides together. On the metanotum there is a third row of about 
9 bristles in front of the other two, the second row consisting of about 
15. The pleura of the mesonotum has 3 or 4 bristles, and the epimerum 
of the metathorax 7 or 8 in two rows (3 or 4, 4). 
Abdomen. The tergites have all two rows of bristles. The first 
tergite, like the metanotum, bears a comb of short apical spines, there 
being also some spines on the following segments. The basal sternite 
has a lateral patch of about 15 to 20 small hairs, the segment bearing 
also some bristles ventrally near the apex. The next sternite has a row 
of 10 to 12 bristles on the two sides together, there being several short 
additional hairs in front of the row. On the sternite of the seventh 
segment there is a curved row of 6 or 7 bristles on each side, with some 
small ones in front. The apical bristle of the seventh tergite is longer 
than the first and second midtarsal segments together. 
Legs. The forecoxa has less than 30 bristles. The midcoxa bears 
about 12 bristles along the anterior edge, apart from those which stand 
at the apical margin. The hindcoxa has 2 bristles posteriorly at the 
apex. The mid- and hindfemora bear one row of bristles on each side. 
The hindtibia has 12 bristles on the outer surface, besides 3 to 6 short 
ones, which are placed along the anterior margin. The apical bristles 
of the tibiae are long and rather thin, the longest one of the hindtibia 
