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Show 1887.] MR. F. E. BEDDARD ON BRACHYURUS CALVUS. 119 EXPLANATION OF THE PLATES. PLATE X. Fig. 1. Demotina semifasciata, p. 70. 2. Pagria costatipennis, p. 73. 3. Ehyparida quinquemaculata, p. 75. 4. Nodostoma tuberosum, p. 78. 5. Dermorrhytis igneofasciata, p. 83. 6. ornatissima, p. 82. 7. ceylonensis, p. 81. 8. Chabria nigroplagiata, p. 93. 9. apicicornis, p. 93. 10. Pexodorus ceylonensis, p. 95. 11. Ivalia metallica, p. 100. 12. viridipennis, p. 100. PLATE XI. Fig. 1. Aulacophora stevensi, p. 103. 2, 3. nigripeta, p. 103. 4. Neochrolea cavifrons, p. 117. 5, 6. Hcqolotia varipennis, p. 118. 7. Antipha nietneri, p. 118. 8. Metrioidea rufipennis, p. 114. 9. Xenarthra mirabilis, p. 107. 10. lewisi, p. 108. 11. unicolor, p. 109. 12. Galerucella ceylonensis, p. 105. 3. Notes on Brachyurus calvus. By F R A N K E. B E D D A R D, M.A., F.R.S.E., Prosector to the Society. [Eeceived January 13, 1887.] (Plate XII.) The accompanying drawing (Plate XII.) represents the external characters of the male Brachyurus calvus which died in the Society's Gardens on July 21 last year. I have taken the opportunity of comparing the structure of this species with the closely-allied B. rubi-cundus, which has been carefully described by Forbes in his memoir on the Ouakari Monkeys1. The genus Brachyurus contains three species2, of which two, viz. B. calvus and B. rubicundus, agree very closely in external characters, and, as I shall presently show, in internal structure ; while the third, B. melanocephalus, differs more in external characters from the other two than they do from each other. Mr. Forbes has given a detailed account of the external characters of B. rubicundus, and the main external characters of all the species are referred to by Schlegel3. The general coloration of the back is a whitish grey, produced by a mixture of white and black hairs, the white predominating ; passing from the dorsal to the ventral surface i P Z. S. 1880, p. 627. r 2 Schlegel' " Pithecia alba " was believed by Mr. Forbes to be identical with 'B'sCMus'ium des Pays-Bas, 1876, p. 227 et seq. |
