NOVITATES ZOOLOGICAE XXXII. 1925. 113 SIPHONAPTERA COLLECTED BY REAR-ADMIRAL H. LYNES IN DARFUR IN 1920 TO 1922.

By DR. KARL JORDAN. THE collection being from a new locality as regards Siphonaptera. it is a most welcome addition to our series of specimens, enabling us to clear up a doubtful point in the systematics of the difficult genus Xeyiopsylla, and establishing a new record for a tropical African species of another genus. For a most interesting account of the expedition cf. Ibis, 1924, p. 399 ff.

1. Synosternus pallidus Tasch. 1880.

For generic name cf. p. 103. A small series of both sexes from Um Kedada, off Erinaceus albiventris March 1920.

2. Xenopsylla nubicus Roths. 1903. A series from: El Fasher, oS. Arvicanthis. Feb. 1921 ; Kurra. off Rattus macrolepis. Feb. 1921 ; Jebel Marra, 7,900 ft., off Dipodillus lowei March 1921 ; Kallokitling. Jebel Marra, 4,000 ft., off Felis ocreata, April 1921 ; Kulme. Wadi Aribo, off Rattus n/jandae. Sept. 1921 ; Um Kedada, off Erinaceus spec, March 1922 ; Kheira, off Taterillus butleri, April 1922. The individual variation exhibited by this series proves that the differences on which X. chersinvs Roths. 1900 is based do not hold good. We therefore now regard this name as a synonym of X. nubicus.

3. Xenopsylla cheopis Rotlis. 1903. A series from : Sixty miles W.S.W. of El Fasher, off Rattus macrolepis, Feb. 1921 ; Niurnya, Jebel Marra, same host, March 1921 ; Jebel Marra, same host, Feb. and Sept. 1921 ; Kulme, Wadi Aribo, off Oraphiurus orobintis and Sorex, June and Sept. 1921 ; foothills of Jebel Marra, off Rattus macrolepis, March and April 1921 ; Duggu. off same host. May 1921.

4. Ctenocephalus felis strongylus Jord. 1925.

Cf. p. 98. All the specimens collected belong to this African form of Ct felis, the frons being as strongly rounded as in Ct. canis Curtis, 1826. A series from : N.E. of Jebel Marra, off Dipodillus lowei, Feb. 1921 ; Jebel Marra, off Vulpes pallida and domestic dog, Sept. and Nov. 1921 ; foothills of Jebel Marra, off Felis ocreata, April 1921 ; Kulme, Wadi Aribo, Aug. and Sept. 1921, off Vulpes pallida.

6. Ceratophyllus henleyi henleyi Roths. 1904.

1 , 11 $9 from Jebel Marra, off Dipodillus lowei, March 1921.

6. Dinopsyllus lypusus J. & R. 1913. Two pairs from S.E. side of Jebel Marra, off Rattus macrolepis, Nov. 1921. This is the first record of a Dinopsyllus from a country farther north than Uganda.