20 Mr. K. Andersen on Eurema (^Hypanartia) bella, Fabr. 4. 11. 25. = 1074. Mlnas Gerae?. (As 559.) Bz. 9. 3. 2C). = 1075. Rio do Janeiro. This specimen bears West\vood^s number N. 4 ; his list adds another, captured 26. 11. 26 at Santos. These two species, originally placed under one number (N. 4) in a clerk's handwriting, were differentiated by West-wood, who placed the examples of lethe under a new number (N.4*). [To be continued.] IV. — Notes on the Gemis Acerodon, with a Synopsis of its Species and Subspecies, and Descriptions of Four new Forms. By KXUD AXDERSEN. The Genus AcERODON. Type. — Pteropus juhaius, Eschscholtz. Species. — Six (nine recognizable forms), viz. A. mackloti (three subspecies), gilvus, celebensis, humilis, lucifer, Jubatus (two subspecies), lianye. — Timor group (Timor, Flores, Alor, Sumba) ; Celebes group (Celebes, Selayar) ; Talaut Islands ; Philip-pines*. Differential characters. — Acerodon differs from Pterojius by the combination of the following dental characters : (1) Poste-rior basal ledge of />4, Wj) ^nd m^ extending along inner base of teeth as a broad, sharply defined shelf; this character is sufficient to distinguish Acerodon from any species o^ Pteropus .^ except Pt. anetianus, which possesses a perfectly similar inner basal ledge in the same teeth, but in every other respect is closely allied to the genuinely Pteropine Pt. samoensis : (2) a well-developed antero-internal basal cusp in p* and m^ (a similar, but smaller, antero-internal cusp developed in * The range of the " subgenus " Acerodon is stated by Matschie to be the Philippines, Gilolo, Batjan, Celebes, flores, and Timor (Megachir. p. 99, 1899), and essentially the same distribution is given by Miller (Fam. & Gen. Bats, p. 59, l'907). Gilolo and Batjan must be excluded from the known range of the genus. The records of Acerodon from the Gilolo group are based on mistaken identifications of Gray's Pteropus caniceps and his Pteropus mackloti var. batchiana ; the latter name is a synonym of the former, and Pierc^ms caniceps a perfectly typical Pterop^ts.