22(3 Mil. J?, B. BBDJ)Aai) ON KEW EABTHWOBMS. [Mar. 19, 



confine myself: to those characters which appear more or less to 

 distinguish the species. It is a small species, about an inch in 

 length ; there is no pigmentation at all discernible. The clitellum 

 occupies segments xiv.-xx., and is incomplete ventrally on the 

 genital segments, i. e. segments xvii.-xix. On those segments 

 only the inner o£ the two ventral setae are present. 



There is a not very well developed gizzard in segment vii. The 

 calciferous glands, as usual, are in ix. They are rather thick- 

 walled, but are without any folds of the lining epithelium. The 

 walls are vascular, but whether there is the mass of tubules which 

 I have described in the last species I am unable to say. The 

 intestine appears to begin in segment xiii. At any rate in this 

 segment the lining epitheUum undergoes a sudden change in 

 thickness, being from that segment onwards much thinner ; at the 

 end of the twelfth segment the thick epithelium projects into the 

 lumen of the gut of the next segment and forms a kind of trap 

 which would allow of the passage of food backwards, but would 

 not allow of its passage in the opposite direction. The first 

 segment of the intestine, however, as I find it, is of less calibre 

 than the section which commences in the fourteenth segment ; 

 but it differs from the section which begins in that segment by 

 being rather folded. 



The thick septa occupy segments v./ix., but the next two 

 are thicker than those which follow. The last heart is in xi. 



The spermathecse, without any diverticula, are in viii., ix. ; they 

 consist of a thick-walled duct and of a thin-walled portion which is 

 stored with sperm. The length of the two regions of the 

 spermathecae is about the same. 



The epithelium which lines the thick-walled section of the 

 organ which may be regarded as the duct is thrown into folds ; 

 there is no folding of the distal section. The testes are, as usual, 

 in segment x. This segment also contains the sperm-duct's 

 funnels. There seems to be only a single pair of sperm-sacs, 

 which are in segment xi., and are not racemose in character. The 

 cavity of the tenth segment contained a mass of developing sperm ; 

 but this cannot be regarded as the equivalent of a sperm-sac, for it 

 was not surrounded by any membrane. The sperm-ducts were 

 not developed in the specimen which I examined by means of 

 transverse sections ; on the other hand, the oviducts were fully 

 developed, and their openings on to the exterior in segment xiv. 

 were quite obvious. The spermiducal glands reached back as far 

 as the twenty-fifth segment. 



Hab. Valparaiso, Salto. 



Fam. Cetmodeilid^. 



The family Cryptodrilidse is represented in the present collection 

 by the genus Mia^oscolex only. Nor has any other genus belong- 

 ing to this family been recorded from the southern parts of the 

 American continent. Michaelsen's Crifjotodrilus spatulifer is the 

 only Cryptodrilid that we at present know from the temperate 



