Gr. F. Ferris 
85 
Cummingsia peramydis n.sp. 
Figs. 2 d, 3 e, 4 c, 8. 
Specimens Examined. Holotype, a female, four female paratypes and 
one male, the allotype, from Peramys domesticus, Quixada, Brazil, from skins 
in the Field Columbian Museum. The host is a marsupial. 
Female (Fig. 8). Length 1*4 mm. Head (Fig. 2 d) somewhat broader than 
long, quite smoothly rounded anteriorly, with but the faintest indication of 
a notch in the lateral margin. The antennal fossae are quite deep and the 
Fig. 8. Cummingsia peramydis n.sp. 
wall is heavily chitinised, this chitinisation broadening anteriorly and extending 
to the anterior margin of the head. From it arises the strong ventral spines. 
The maxillary palpi are quite short and the maxillary lobes are apparently 
lacking. 
Thorax with the mesonotum clearly present, the pronotum and metanotum 
bearing a few small setae and with two or three pairs of long setae along the 
posterior margin. The sternites of the thorax bear numerous short setae and 
near the base of each coxa is a single very long seta. 
