Vol. xxv] ENTOMOLOGICAL NEWS 199 
type, the mandibles being long and slender and the other 
mouth parts together with the hypopharynx and pharyngeal 
skeleton forming a sort of grasping tube or furrow. The an- 
tennae are of the usual capitate Amblycerous type, but seg- 
ment three is unusually narrow at base, and segment two un- 
usually robust and subspherical in shape. Metathorax dis- 
tinct although short; prothorax laterally expanded or “wing- 
ed.” Head and thorax with very long, strong, conspicuous 
spiny hairs, but with no short broad-based spines on the un- 
der side of the head as in Menecanthus (Menopon) or Hetero- 
doxus. Feet with small colorless broad flaps or pads extend- 
ing outwards from the base of the claws. Male genitalia char- 
acteristic. The only species so far known is from South Amer- 
ica (Peru) ; host, the vizcacha, Lagidium peruanum Meyen. 
Philandesia townsendi sp. nov. (Text-fig.) 
A Mallophagan species of medium size, the male being one and 
two-thirds, and the female being about two millimeters long. In both 
male and female the head is almost twice as wide as long, while the 
abdomen of the male is shorter and broader than that of the female. 
{n general appearance it suggests a very spiny Menopon or Trinoton 
with long thorax and short abdomen. Striking features are the nar- 
row, round-ended, ocular emarginations, the curious groove-like ap- 
pearance of the mouth (Text-fig. 7), and the small and delicate but dis- 
tinct lateral flaps or pulvilli at the base of the claws. 
Male (Text-fig. a).—Length of head .30 mm., thorax .35 mm., ab- 
domen .98 mm., total 1.64 mm.; width of head .58 mm., thorax .58 mm., 
abdomen .86 mm. Female—Length of head .36 mm., thorax .51 mm., 
abdomen 1.09 mm., total 1.96 mm.; width of head .59 mm., thorax .66 
mm., abdomen .99 mm. 
Head triangular with small but distinct ocular marginations which 
are narrow and with sub-parallel margins at the inner ends which 
are narrowly rounded. On the dorsal aspect a very spiny hair in each 
temporal angle projecting back almost to abdomen and four other 
long spiny hairs along the occipital margin. There are two strong 
spiny hairs in each lateral marginal angle just in front of the ocular 
emargination, and numerous shorter spine-hairs scattered over the 
dorsum of the head. On the ventral face there are even more long 
spiny hairs and numerous shorter ones. The antennae are four-seg- 
mented, no signs of a fifth segment (division of segment 3 by a trans- 
verse suture) being apparent. A single hair (sense-hair ?) rises from 
the apical angle of segment 1, three longer hairs from the apical angle 
