jo THOMPSON YATES AND JOHNSTON LABORATORIES REPORT 
Spread on the African Continent from the West Coast to the Lake district, and has 
also reached Madagascar. 
We have the species from : — 
British Guiana ; 
Sapucay, sixty miles east of Asuncion, Paraguay, collected by W. Foster ; 
Minas Geraes, collected by A. Kennedy ; 
South Cameroons, collected by W. Bates. 
2. Dermatophilus caecata 
(Fig-. D and G) 
$. Sarcopsyl/a cakata, Enderlein, Zoolog. Jahrbiich. XIV, Abth. /. Syst. p. 548. t. 34. Figs. 1, 3, 5 
(1901) (Piracicaba, S. Paulo, oft" Musrattus ; id., Deutsche Tiefsee — Exp. III. 7. p. 263. Fig. 5 
(1903). 
The $ is not known. 
The oral edge of the head of this species (P ig. G) is longer than in D. penetrans, 
while the genal edge is shorter. The frontal tubercle stands closer to the frontal 
oral angle. The maxillary palpus is shorter, especially the second segment, the 
hairs of the palpus being far less numerous than in D. penetrans. The eye is small, 
and is devoid of pigment. The head and thorax of the pregnant $ are completely 
retracted into the swollen abdomen (Fig. D, diagrammatical). The membrane 
