438 Dr. W. B. Benham on some 



I am by no means certain that these oval areas are really 

 the remains of" copulatory papillse ; a careful examination 

 with a hand-lens shows that the epidermis is here rubbed off 

 and the circular muscles exposed. But since tliis abrasion ha-^ 

 affected spots symmetrically arranged and of the same size and 

 shape (roughly), and no other such spots occur on the 

 worm, 1 believe that the glandular epitlielium of papillge 

 projecting from these spots, and looser in character, lias been 

 rubbed away ; I have therefore figured them as papillae. The 

 same remarks apply equally to those in front of the male 

 pores. There are only three cha^tge between the two 

 " porophores " *, and it appears to me that there is one chasta 

 in the centre of each, immediately behind the male pore ; the 

 existence of only three cha^tse here is, I believe, unique ; 

 the pores are 5 millim. apart. The oviducal pore is median, 

 as usual. 



The spermathecal pores are not visible. 



The first dorsal pore is xii./xiii. 



The chcetcB present a slight dorsal gap, equal to about 

 twice the normal gap ; this is visible behind, but not recog- 

 nizable in front of the clitellum ; there is a very sliglit but 

 distinct ventral gap. 



The cha3t£e on segments ii., iii. are distinctly smaller than 

 those on the body generally, while those on segments iv., v., 

 vi. are slightly larger. 



On segment ii. there are about 50 chsetge, though occa- 

 sional gaps equal to about 6 or 8 occur. 



On segment iii., 92. 



„ xiii., 125. 



„ xxvi., 128 or 130. 



Internal anatomy. — There are two pairs of spermathecce, in 

 segments viii. and ix., with anteriorly placed openings. There 

 is no perceptible difference in size between the pairs. The 

 " sac " is oval, with a short thick duct, not well marked off 

 from the sac. The diverticulum, dilated at the end, but of 

 rather a different shape to that of the preceding species, has its 

 duct less undulating. 



The sjjermiducal gland is large, occupying segments xvi., 

 xvii., xviii., and of rather a peculiar form. The anterior 

 part of the gland is thicker than the rest, and the edge stands 

 up above the rest (fig. 3 Z»). It is possible, of course, that the 

 apparently peculiar shape of the gland may be due to strong- 

 contraction of the worm. It is only slightly notched, and 



* I suggest this term for the slight papillte uu which, iu uearly all 

 earthworms, the male pore is situated. 



