200 DE. W. B. BENHAM ON 



The male pores are relatively close together, as there are only 

 four chsetge between them^ as counted on the stripped cuticle. 



There are two pairs of sj)ermathecal pores, between the seg- 

 ments vii./viii., VIII. / IX., appearing as wide conspicuous slits, 

 which under a hand-lens look double, as if each pore led into 

 two ducts. Between these pores are 4 to 6 chsetae. This 

 number is obtained by taking lines joining the two pores of each 

 side and counting the chaetse (on segment viii.) between these 

 two parallel lines. 



The first dorsal pore \s between segments xii./xiii. : the pores 

 are visible in the clitellar segments o£ this particular specimen,. 

 in which, however, the clitellum is not fully formed. 



The clitelhim occupies the normal position, and there are no 

 chsetse on the segments composing it. 



The clicBtal ring is complete, i. e. there is neither dorsal nor 

 ventral gap ; the chjet^ number : — 



32 on segment ii. 

 56 „ VI. 



72 „ XIII. 



74 „ XXVI. 



Internal Anatomy. — There are no particularly stout septa, the' 

 four following the gizzard being very little stouter than those- 

 behind ; but those around the pharynx are, as usual, thick. 

 The gizzard appears to occupy segments ix. and x., there being 

 a short piece of oesophagus in segment viii., in the place where 

 the gizzard usually commences. The paired caecum arises in 

 segment xxvii., and extends forwards into segments xxvi. and 

 XXV. ; its base, as in a few other species, being deeply notched so 

 as to form four short lobes (fig. 1 d). This phenomenon is 

 already recorded in some half a dozen species, in addition to three 

 recently described by myself from Celebes * ; but in most of" 

 these the lobes are more numerous: in P. trityphla, Bedd.f,. 

 however, there are only three lobes. 



The two sperm-sacs on each side are tongue-shaped, not lobed, 

 and lie in the usual segments. There are two pairs of sperma- 

 theccB, in segments vii. and viii., opening anteriorly : the thin- 

 walled sac is large and very distinctly marked off from the 

 duct (fig. 1 c) ; it contains a mass of yellowish-white substance 

 (secretion), compacted together to form a somewhat club-shaped 

 * Loc. cit, 

 t Beddard, P. Z. S. 1896, p. 205. 



