BY J. J. FLETCHER, M.A., B.SC. 391 



ventral surface of xvii a pair of pores ventrad of the innermost 

 setae ; a second pair on small papillae just ventrad of the papillae 

 carrying the male pores ; a third pair on minute papillae on xix, in 

 front of the line of setie, and corresponding with the interval 

 between the first and second setae. 



In other respects this species is like P. australis, except that 

 there is an additional pair of calciferous pouches in xiii, and that 

 the genital duct is differently disposed, as previously mentioned. 



In a fresh specimen the calciferous pouches and the portion of 

 the intestine in xiv presented a white and glistening appearance, 

 the contents consisting chiefly of minute granules which effervesced 

 on the addition of acid. 



Hah.—Mt. Wilson. 



I have already referred to this species in speaking of P. aus- 

 tralis, from which, after having examined additional material, 

 1 find it to be readily distinguishable (1) by the greater breadth of 

 the dorsal interval devoid of setae in front of the clitellum and 

 a corresponding decrease in the number of setae, (2) the ventral 

 position of the spermathecal apertures, (3) the presence of an 

 additional pair of calciferous pouches, (4) the diiferent position of 

 the bend of the genital duct, (5) as well as apparently by accessory 

 copulatory structures, which were absent in all the specimens of 

 P. australis yet examined. 



Perich.eta canaliculata, n. sp. 



Thirteen (spirit) specimens varying from 9 cm. long and 8 mm. 

 broad to 14-5 cm. long and 8 mm. broad; number of segments 

 from about 120-160. Body cylindrical, tapering just anteriorly, 

 and more gradually for a considerable distance posteriorly. Colour 

 even in spirit specimens purplish or reddish-brown, paler below. 

 Prostomium dividing the buccal ring very slightly ; marked ante- 

 riorly and inferiorly by several (three or more) irregular longi- 

 tudinal markings ; superioi'ly with a median longitudinal groove, 

 continuing sometimes across the buccal ring, or not on to this, or 



