OCR Text |
Show 450 MR. F. J. JACKSON ON THE [May 4, 19. POLLONERA, CARLO. "Specie nuove o mai conosciute degli Arion europei." Atti d. R. Accad. di Torino, 1886-7, vol. xxii. pp. 290-313, tav. iii. 20. . " Nuove contribuzioni alio studio degli Arion europei." Ibid. 1889, vol. xxiv. pp. 401-418, tav. ix. 21. . Arionidae de la Region Palearctique." Boll. Mus. Zool. Torino, 1890, vol. v. no. 87, pp. 1-42. 22. SIMROTH, H. " Versuch einer Naturgeschichte der deutschen Nacktschnecken unci ihrer europaischen Verwandten." Zeit. f. wdss. Zool. 1885, pp. 203-366, Taf. vii.-xi. EXPLANATION OF PLATES XXIX.-XXXI. Fig. 1. The terminal ducts of the generative organs of Arion subfuscus, Drap. Fig. 2. Tbe same, showing variation in the form of the free-oviduct. Figs. 3, 4, & 5. The same, showing variations in the form of the terminal ducts. Fig. 6. The terminal ducts of the generative organs of Arion horiensis, Fer. Figs. 7, 8, 9, 10, 11, & 12. The same, showing variations in the form of the terminal ducts. Fig. 13. The generative organs of Arion fuscus, Mull. Fig. 14. The terminal ducts of the same in natural position. Fig. 15. Tbe terminal ducts of the generative organs of Arion citrinus Westerl. (After Babor.) Fig. 16. The generative organs of A. citrinus. (After Babor.) Fig. 17. The terminal ducts of the generative organs of Arion fuscus, var. boettgeri, Poll. (After Babor.) Figs. 18, 19. Tbe terminal ducts of the generative organs of Arion cceruleus, Ollge. alb.gl. Albumen-gland. LETTERING. f.ov. Free-oviduct. h.d. Hermaphrodite duct. h.gl. Hermaphrodite gland. Lv. Lower vestibule. ov. Oviduct. pr. Prostate. rd. Receptacular duct. r.m. Retractor muscles. r.s. Receptaculum seminis. s.d. Sperm-duct. u.v. Upper vestibule. v.d. Vas deferens. 3. Field-Notes on the Antelopes of the M a u District, British East Africa. By F R E D E R I C K J. JACKSON, F.Z.S. With Remarks by P. L. SCLATER. [Received February 15, 1897.] [Mr. Jackson, who is now in command of ' Ravine Station' at the edge of tbe Mau Plateau on the main route from Mombasa to Lake Victoria, has, in reply to some enquiries, kindly favoured me with the subjoined, field-notes on the Antelopes of the district in which he is resident.-P. L. S.] 1. BUBALIS COKEI (Giinth.). I am doing my best to ascertain the ranges of the various Antelopes, but find it somewhat difficult. 1 thought I had quite |