74 The Non-Combed Eyed Siplionaptera 
segment being somewhat shorter than the two preceding segments 
together. The second segment of the maxillary palpus is longer than 
in R. australis. 
Thorax. The epimerum of the metathorax bears 6 or 7 bristles in 
two rows (3, 4 ; or 3, 3). 
Legs. The mid- and hindtibiae hear a row of 4 or 5 bristles on the 
inner surface. The second midtarsal segment (PI. Ill, fig. 13) is 
considerably longer than in R. australis. The bristles of the tarsi are 
shorter, the longest apical bristle of the ffrst hindtarsal segment not 
reaching to the apex of the second segment, while the longest bristle of 
the second segment only reaches to the apex of the third. The longest 
apical bristle of the fourth hindtarsal segment hardly extends to the 
base of the third pair of bristles of the fifth segment. 
Modified segments. J 1 . The clasper bears near the insertion of 
the “finger” 4 bristles (3, 1), besides 2 small hairs. The ninth sternite 
(PI. VI, fig. 8) is broader than in R. australis and bears many more hairs, 
one of them being long, while all the other ventral ones are short. 
We have two d d' from Perene, Peru, taken off Tatusia novemcincta 
by P. 0. Simons. 
(5) Rhopalopsyllus lugubris -spec. nov. 
(PI. Ill, fig. 12; VI, fig. 9.) 
Larger than R. australis, to which it is closely allied. 
Head. The last segment of the rostrum is longer than the two 
preceding ones together. The second segment of the maxillary palpus, 
as in R. cacicus, is much longer than the fourth. 
Thorax. The anterior row on the pronotum contains about 10 
bristles on the two sides together. The epimerum of the mesothorax 
bears 4 long bristles, 2 of which are placed above the stigma, besides 
2 or 3 short ones situated in front of the meral suture. 
Abdomen. The basal abdominal sternite beai-s about 17 shoi't 
bristles on the lateral surface, arranged in three irregular rows, while 
the second sternite has on each side 3 or 4 shoi't bi'istles in front of the 
postmedian row. 
Legs. The hind margin of the hindcoxa is much less rounded than 
in the allied species. The midfemur bears about 24 bristles on the 
outside and the hindfemur about 18, arranged in three irregular rows. 
The bristles on the outside of the mid- and hindtibiae are more 
numerous than in R. australis and cacicus, the hindtibia bearing about 
