Iv. Jordan and N. C. Rothschild 
73 
The measurements of the mid- and hindtarsi together are : 
Segments 
First 
Second 
Third 
Fourth 
Fifth 
Midtarsus : 
3 
14 
23 
14 
9 
30 
¥ 
16 
26 
18 
10 
36 
Hindtarsus : 
3 
49 
35 
22 
13 
39 
¥ 
52 
38 
23 
13 
40 
Modified, segments. </. The eighth sternite bears a row of about 
9 rather short bristles on the two sides together. The large clasper 
bears 2 stout bristles below the tip and a number of slenderer bristles 
at and near the upper edge. The movable “ finger ” is elongate-rectan¬ 
gular, the apex being slightly rounded. At the edge of the clasper near 
the base of the finger there are 3 thin bristles (2, 1). The external 
(ventral) portion of the ninth sternite (PI. VI, fig. 11) gradually narrows 
towards the apex, bearing a number of slender bristles and hairs.— 
The eighth tergite has 1 to 3 bristles above the stigma. There is 
a row of 4 long and 5 or 6 short bristles extending from the stigma 
downwards and an additional row of about 12 bristles along the apical 
edge on the outside, 4 of the apical bristles being long and placed 
close together. On the inside of the segment there are about 9 bristles. 
The stylet is cylindrical. 
We have a series of both sexes from: 
Santa Andrea, Tabasco, Mexico, off Dicotyles labiatus, May 1897, 
collected by Dr Buller. 
Charuplaya, Bolivia, off' Speothos vinaticus, June 1897, collected by 
P. O. Simons. 
San Bernardino, Paraguay, off Dcisyprocta aguti, May 1906, collected 
by Karl Fiebrig. 
Minas Geraes, Brazil, no host, collected by A. Kennedy. 
In the J J from Brazil and Paraguay the ninth abdominal sternite 
is longer, bearing fewer hairs proximally and more distally (PL VI, 
fig. 10) than in Mexican specimen. 
(4) Rhopalopsyllus cacieus spec nov. 
(PI. Ill, fig. 13; VI, fig. 8.) 
Pule.v australis Rothschild (1904 a, p. 613, n. 8, partim, Ferenc). 
Nearly related to R. australis, but differing in the following 
characters: 
Head. The rostrum reaches to the apex of the forecoxa, the last 
