W. W. Smith.- — On New Zealand Earthworms. 171 



diffuse, and there is a particularly dense mass of tubes in the 

 anterior segments, which seem to represent the mucous gland 

 of Octochcetus multiporus.'''- 



" The dorsal vessel is double, and there are three pairs of 

 hearts in x.-xii. 



" All the gonads are attached to the front wall of their seg- 

 ments. 



"The spermatothecge (in viii., ix.) have a minute clump of 

 diverticula, presenting the appearance of a solid body, about 

 the size of a pin's head. 



" There are no penial setge. 



" This species is evidently perfectly distinct from the last ; 

 it is, however, clearly referable to the same genus, if this 

 genus be admitted. The diffuse nephridia, double dorsal vessel, 

 separate setae, abseiice of penial setae, and anterior position of 

 gizzard cause it to resemble the three other species which I 

 refer to the genus Octochcetus. It differs from 0. multiporus 

 and from 0. thomasi in the following points : — 



" (1.) The prominence of the atrial pores as seen from the 

 outside. 



" (2.) The position of the gizzard in segment v., and its 

 limitation to this segment. 



" (3.) The presence of two pairs of calciferous glands inxv., 

 xvi. ; in this the present species resembles 0. antarcticus. 



" (4.j The existence of only three pairs of hearts instead of 

 four. 



" (5.) Six thickened septa instead of seven. 



" (6.) The attachment of the gonads to the front wall of 

 their segments ; in this character 0. huttoni resembles 0. 

 antarcticus . 



" The next species which I describe is referable to the 

 genus Acanthodrilus (s.s.)." 



Acanthodrilus smithi, Beddard. Pro. Zool. Soc. Lond., 



1892, p. 675. 



I discovered the first specimens of this species underneath 

 large stones lying among the tussocks on the flat beneath the 

 main limestone rock at Albury. It is the most active form of 

 all the indigenous species of Acanthodrilus yet discovered. 

 Like A. rosce, its colour is rich brown, which changes only 

 slightly in alcohol. In the living worm the segments are very 

 clearly defined, and impart a neat effect to the animal when 

 crawling over the ground. Its rapid motions are similar to 

 those of Lumbric7is ruhellus, Hoffmeister, and Perichceta 

 intermedia, Beddard. While in the act of crawling the an- 



* I did not ascertain whether these opened into the buccal cavity, as iu 

 O. mziUiporus. — F.E.B. 



