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Show 896 MR. F. E. BEDDARD ON THE [Dec 4, From the foregoing account of its structure may be abstracted the following brief definition of Amyntas virgo, 11. sp. Length 152 m m . Setae of anterior segments rather larger. Clitellum xiv.-xvi., without setae. Male pores far apart. No genital papillae. Gizzard-septa wanting. Caeca present. Last hearts in xiii. Sperm-sacs small, in xi., xii. Spermiducal glands confined to xviiith segment, with circular terminal sac Spermathecae very minute in vii., viii., ix., with equal-sized diverticulum. Hab. Malay Peninsula. (7) Amyntas perichaeta, n. sp. Although I have had for examination only a single example of this species, there is no possible doubt, in m y opinion, of its distinctness as a species. It furnishes, moreover, an excellent example of how necessary it is to dissect an earthworm merely for the purpose of discovering whether it is known or not described. Externally, the present species might readily be confounded with many others. But its somewhat negative external characters combined with several internal features of very positive value enable it to be placed with accuracy. It is a stoutish worm of 170 m m . in length. The number of segments is 116. The setce are more or less equal in size ; those of the anterior segments show no special differentiation. I could find no genital papillce of any kind. The clitellum occupies the usual segments and is quite free from setae. The male pores are conspicuous orifices separated from each other by a fairly wide interval. The gizzard-septa appear to be w7anting. The intestine commences in the xvith segment. The usual cceca of moderate length are present. The last hearts are in segment xiii. The sperm-sacs lie in segments xi. and xii.; they are fairly large and solid bodies. The two sperm-ducts of each side unite verv shortly after they have emerged from the sperm-reservoirs. The spermiducal glands are on the whole very compact, although they are much divided into small lobules. They occupy segments xvii.-xix. and they have a kidney-like outline. Their duct is not long; it runs forward and then backw ard, after the very prevalent fashion, and then debouches iuto a fairly large terminal bursa of approximately circular outline, which is confined to the xviiith segment. A pair of small egg-sacs occur in the xivth segment, attached of course to the anterior wall of that segment. There are three pairs of spermathecce. These lie in segments vi., vii., and viii., and are lateral in position, occupying the average place that these organs occupy in the members of the genus |
