144 Transactions. — Zoology. 



Smith, W. W. (gives a resume of some of Beddard's papers) : — 

 (1.) Trans. N.Z. Inst., 1892. 

 (2.) Trans. N.Z. Inst., 1893. 

 Spencer, W. B. : — 



(1.) " Preliminary Descriptions of Victorian Earthworms : 



Part 2." Proc. Eoy. Soc. Vict., vol. 5, 1892. 

 (2.) Further Descriptions of Australian Earthworms." 

 Proc. Eoy. Soc. Vict., vol. 13, part 1, 1900, p. 30. 



EXPLANATION OF PLATES II.-IV. 



The illustrations of the anatomy of the five earthworms described in 

 this paper are purely diagrammatic, indicating only the segmental posi- 

 tion of the various organs, the worm being supposed to be slit up along 

 the dorsal line and the body-wall pinned aside. 



A group of three diagrams refer to each worm herein described. The 

 left-hand diagram in each of the groups referring to a species represents 

 the external features. The location of the various genital pores is repre- 

 sented as round black dots (if on a papilla this is left white), the clitellum 

 is obliquely shaded, the tubercula pubertate are vertically shaded. 



In addition, the arrangement of the chaetse — labelled a, b, c, d — is in- 

 dicated in two segments in each case, usually in the 4th and the 21st ; 

 they are omitted in the remaining segments for clearness' sake. The 

 true relative spacing of the chastse is shown. 



The position of the nephridiopores is given for one segment, except in 

 the species of Acanthodrilus, in which it is necessary to note whether 

 there is a linear or an alternate (zigzag) arrangement. 



The middle figure represents the alimentary canal and so much of 

 the vascular system as is diagnostic. The latter is black. The gizzard 

 is indicated by vertical shading, the oesophageal glands by more or less 

 horizontal lines. The intestine is not represented as being constricted, 

 which is, however, the case in most worms. 



The right-hand figure shows the reproductive system. The gonads 

 are in black. The sperm-sacs are dotted. The sac with penial chsetae 

 (cop.) when present is indicated, and the muscular duct of the spermi- 

 duoal gland is transversely striped. 



No attempt is made to give the relative Bizes of the worms or of the 

 various organs. Nor has it been considered necespary to label the various 

 organp, since to any one who is familiar with the anatomy of any earth- 

 worm the structures here indicated will be sufficiently intelligible. 



