656 



MR. f . E. BEDDARD OX A 



[May 22, 



width until that segment. The difference in size between the 

 anterior and posterior pairs of the sperrniducal glands is clear (spd.). 

 The sperm-sacs (sps.) are to be seen in the xith and xiith segments, 

 a quite usual place for them. 



Fig. 



2. 



General dissection of Benhamio budgetti. 

 G., gizzard; sps., sperm- sacs ; ca., calciferous glands : spd., spemiiducal glands. 



The intersegmental septa of this worm have the following arrange- 

 ment : — 



The first septum, which is fairly thick, marks the anterior end of 

 the anterior gizzard ; the next, aiso thick, the posterior end ; then 

 follows an excessively thin one. Another thin septum marks the 

 posterior boundary of the second gizzard. After this are four 

 closely crowded and also fairly thick septa. The two next, which 

 lie on the posterior boundaries of the xith and xiith segments, are 



