238 MB. F. E. BEDDABD ON NEW EARTHWORMS. [Mar. 19, 



individuals the colour was much more sombre and there was 

 hardly any indication of the white seta areas. 



The largest individual which was measured had a length of 52 mm., 

 a diameter of 3*5 mm., number of segments 60. This was one 

 of the more darkly coloured individuals, which might perhaps be 

 regarded on account of this slight difference as a variety. A more 

 typical specimen (as regards colour) was 32 mm. by 3 mm., with 56 

 segments. But there is a considerable range in size. 



The prostomium completely divides the buccal segment. 



The setae are not strictly paired, but the setae of the lateral 

 couples are farther away from each other than are those of the 

 ventral. The latter hardly come nearer to each other on the 

 segments in the neighbourhood of the xviith ; the approximation 

 is not marked, as in some species. 



The clitellum occupies segments xiii.-xvi., half only of the first 

 and last. 



The dorsal pores are present and appear to begin on the cli- 

 tellum. 



The gizzard is large compared to the size of the worm ; in the 

 smaller of the two individuals whose measurements are given 

 above it was in segments vi., vii. In a specimen sectioned longi- 

 tudinally the greater part of the gizzard was seen to lie in vi. The 

 intestine begins in xvii. Behind the gizzard are a number of septa 

 which, though not greatly thickened, are stouter than those which 

 follow them. The last of these bounds segment xiv. anteriorlv. 



The last heart is, as usual, in segment xii. The nephridia 

 commence in segment v. 



There is only a single pair of testes and funnels in segment x. 

 The sperm-sacs are large and racemose and lie in segment xi. 

 There is also a pair in ix. which are a good deal less obvious. 



The spermiducal glands are stout and of the tubular character 

 invariably found in this genus. The muscular duct leading to the 

 exterior is moderately long. The penial setae (two in a sac) are 

 longish (2-5 mm.) and quite unornamented. The free extremity 

 gradually tapers to a point. The sac of setae opens in common 

 with the spermiducal gland. The sperm-duct opens just separately 

 on to exterior. 



The spermathecae are in ix. The diverticulum is nearly as long 

 as the pouch, but has a mulberry-like appearance. In sections 

 the diverticulum shows much the same structure that I have 

 described above in M. gracilis. 



The same locality also produced three specimens of a small 

 Microscolex which I was at first inclined to regard as a distinct 

 species. I consider, however, that it is merely a small variety 

 of Microscolex diversicolor. The total length of the largest indi- 

 vidual is 30 mm., the diameter 2 mm., number of segments 100. 

 It is evidently therefore a more slender worm than the type. 

 The setae appear to be a little more paired than in the type. 



Hab. St. 41, Valdivia, Estancilla. St. 48, Corral. St. 38, 

 Valdivia. St. 36, Valdivia. St. 46, Corral. 



