KtirtMoorms from Iletidei'son Island, 257 



gut ; its dorsal e'l^^e is very convex and divided into 'iS to ;> 

 lobes. From the bilum of eacli gland orioinates a cylindrical 

 muscular duct, which de.sciibes an S and opens directly to 

 the exterior ; the terminal bursa copulatrix is wanting. 



Spermathecae, two pairs, in viii. and ix. segments. Each 

 spermatheca has a medial long and slightly bent muscular 

 duct. The main pouch has the same length, and is clearly 

 distinct from the duct. The diverticulum ends in a spherical 

 or oval distal extremity ; it is longer than the main pouch. 

 The duct of the diverticulum is S-shaped at its base and 

 diminishes in breadth at the same region (text-fig.). Before and 



Pheretima hendersoniana, sp. n. Spermatheca, x 0. 



behind each spermathecal pore, at the internal surface of the 

 body-wall, a whitish glandular mass [gK) is recognizable. 

 Loc. Henderson Island, S. Pacific (D. Tait coll.). 



Pheretima montana, Kinb., subsp. arthuri (Benham). 



Two specimens. 



Loc. Henderson Island, S. Pacific (D. Tait coll.). 



The two specimens agree ^particularly with Benham's 

 description and figures of Perichata art/ntri, Benh.*. This 

 species is arranged by Beddard f in the synonymic list of 

 Ph. montana, Kinb., with a number of otlier species ; but 

 more recently Ude X separates tliem again as a distinct species. 

 I prefer a middle course, and give to Benham's P. arthuri 

 the rank of subspecies only. 



In a specimen from the above locality the following cha- 

 racters are noticeable : the spermatheca) open to the exterior 

 ill intersegmental furrow vii/viii., but lie in the vii. segment; 

 instead of a single median female pore, there are two female 

 pores close to the middle line on the ventral side of tiie 

 xiv. segment. 



* Joum. Linn. Soc, Zool. xxvi. 1897, p. 212, pi, xvi. fig. 4rt, h. 

 t Proc. Zool. Soc. London, HXJO, p. G20. 

 X Zeitscbrift f, wiss. Zool. Ixxxiii. p. 448. 



