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Show 546 COL. YERBURY AND MR. O. THOMAS ON [June 18, are males, and the one red individual does not appear to differ the others in age or in the development either of its facial glands or reproductive organs l. 5. HIPPOSIDERUS TRIDENS, Geoffr. «, b. Lahej. 3 and 27. III. 95. c-l. Island in Ras Fakoum Bay, in cave. 6. IV. 95. Although only two specimens of this Bat were obtained at Lahej it does not appear to be uncommon there. At the second locality it was very plentiful. Each gravid female contained a single foetus. 6. NYCTERIS THEBAICA, Geoffr. a-f. Lahej. 3. III. 95. g. Lahej. 6. III. 95. h-k. Lahej. 18. III. 95. This Bat was very plentiful in the bungalow at Lahej, and could always be caught during the smaU hours of the night in the bathroom with a butterfly-net. They fed on various species of orthoptera, a great number of wings of locusts and grasshoppers being littered about the floor below where they had been hauging to the rafters of the bath-room. This is an early flying Bat and follows (at Lahej) H. tridens soon after dusk. As usual, the gravid females bad each only a single foetus. 7. SCOTOPHILUS SCHLIEFFENI, Peters. A, b. Lahej. 12. III. 95. Three of these Bats came into the bungalow at Lahej about 8 P.M. on the above date, two of which were caught in the butterfly-net. This was tbe only occasion the species was met with. In using the word Scotophilus we provisionaly accept the opinion of Dr. Harrison Allen as to the distinctness from each other of the American and Old World members of the group, to which if united the name Nycticejus would apply. 8. VESPERTILIO (LEUCONOE) DOGALENSIS, Monticelli. No specimens of this Bat were met with, nor in fact any representatives of the great genera Vesperugo or Vespertilio, in both of which the whole Arabian region seems to be singularly poor. 9. COLEURA AFRA (Peters). «, b. Cave in island Ras Fakoum Bay (Little Aden). 6. IV. 95. c-j. Cave at Aden. 13. IV. 95. A few of these Bats were found in the first of these localities- a lofty cave with direct communication with the sea, and with deep water everywhere. Although a great number of Trieenops persicus and Hipposiderus tridens were also found in the same cave, this 1 Compare J. A. Allen, Bull. A m . Mus. N. H. vi. p. 248 (1892), where a parallel variation in Chilonyctcris davyi is shown to be " independent of sex, age, or season." |
