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Show 690 MR. F. E. BEDDARD ON NEW [Dec. 20, Colour (in spirit, and after corrosive sublimate) purplish dorsal surface and yellow beneath ; clitellum yellow. Clitellum xiii.-xix. On segment xviii. an oval depression 3 mm. wide round the male pores which lie behind the setae ; the latter are less modified than in P. excavatus. Oviducal pore single and median, in front of setae of segment xiv. Dorsal pores commence v./vi. Gizzard in vi.; intestine commences in xix. No septa very much thickened. The last pair of hearts is in segnent xiii. ; the first pair of commissural vessels in vi. Sperm-sacs in x.-xii. Nephridia commence in segment iii. IV. Genus MONILIGASTER. 13. Moniligaster bahamensis. _ This genus and the closely allied Desmogaster of Rosa have been hitherto only discovered in the tropics of the Old World ; India, Burma, Japan, and the islands of Luzon, Ceylon, and Sumatra have yielded all the known species. In the present paper I describe a form which I received alive together with a number of other species from Kew, whither it had been imported accidentally with plants from the Bahamas. The worm is small and slender, measuring about 25 mm. in length. Although this interesting genus has been now so frequently studied, there yet remain a few points upon which further information is desirable : some of the hitherto missing information I am able to supply in the present paper. The genus is chiefly interesting on account of the fact that it upsets in so many points the old distinction between "Terricolae " and " Limicolae." Though terrestrial in habit and in general appearance the anatomical structure is in many respects that of certain aquatic Oligochaeta. Our present information upon the genus is derived from the following memoirs :- (1) F. E. BEDDARD.-"Note on some Earthworms from Ceylon and the Philippine Islands." Ann. & Mas;. Nat. Hist. ser. 5, xvii. p. 89 (1886). (2) F. E. B E D D A R D . - " Note on the Reproductive Organs of Moniligaster." Zool. Anz. Bd. x. p. 678. (3) F. E. B E D D A R D . - " O n the Structure of three new Species of Earthworms, with Remarks on certain points in the Morphology of the Oligochaeta." Q. J. M. S. vol. xxix. p. 119. (4) F. E. B E D D A R D . - " Preliminary Notes on Oliogochaeta. (3) Note on Moniligaster:'' Zool. Anz. Bd. xii. p. 533. (5) F. E. BEDDARD.-"Observations upon the Structure of a Genus of Oligochaeta belonging to the Limicoline Section." Tr. R. Soc. Ed. vol. xxxvi. pt. i. no. 1. (6) A. G. B O U R N E . - " O n Indian Earthworms: Pt. L, Prelim- |