ANOMALURIDE 449 
infraorbital opening small (except in Anomalurus); mandible with 
the angular part arising from the inferior surface of the bony 
socket of the lower incisor ; clavicles well developed; fibula distinct. 
Family ANOMALURID. 
Arboreal forms, having their limbs connected by a cutaneous 
expansion supported by a cartilaginous process arising from the 
olecranon ; tail long and hairy, with large imbricated scales on its 
Fic. 197.—Anomalurus fulgens. From Alston, Proc. Zool. Soc. 1875. 
inferior surface near the root ; sixteen pairs of ribs; no postorbital 
processes on the frontals; p 4; molars not tuberculate, with 
transverse enamel-folds. Confined to the Ethiopian region. 
Anomalurus,! with several species from West and Central Africa, 
alone represents the family. The peculiar caudal scales, which 
evidently assist the animal in climbing, and the position of the 
cartilaginous support of the parachute, are well shown in Fig. 197. 
All the species but two are from Western Africa ; 4. orientalis occurs 
near Zanzibar, and A. pusillus is from the equatorial regions of that 
1 Waterhouse, Proc. Zool. Soc, 1842, p. 124. 
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