102 WILLIAM BLAXLAND BENHAM. 



no funnel, opens to the exterior at the hinder region of the 

 same somite. In somite viii is a pair of spermatheese, occu- 

 pying the position of the anterior pair of testes of Perrier's 

 form. 



In the * Zool. Anzeiger/ 1886, p 342, Beddard discusses the 

 relation of the ovary to the spermatheca in Eudrilus, as de- 

 scribed by Perrier ('Nouv. Arch. Mus. d'Hist. Nat.,' 1872, 

 viii), from whose figures and description it appears that the 

 ovary is grafted on to the spermatheca, from the opposite side 

 of which springs a coiled diverticulum. 



Beddard comes to the conclusion that the ovary is in con- 

 tinuity with the oviduct — Perrier's coiled "diverticulum" — 

 and, moreover, that the ovary has a very different structure 

 from that of Oligochaeta in general, in that it is surrounded by 

 a fibrous tunic, continuous with the wall of the oviduct, and 

 the cavity is divided by trabeculse into chambers, in which lie 

 ova in different stages of development. 



At a recent meeting of the Zoological Society of London, 

 Beddard pointed out certain variations in the position of the 

 genital pores of Perionyx excavatus, E. P., as seen in a 

 large number of specimens. 



The development of the seminal reservoirs in Lumbricus 

 is described by Dr. R. S. Bergh (*Zool. Anzeiger,' 1886, p. 

 231) in a preliminary note. 



It consists essentially of a bulging of the septa of the 

 somites x and xi, so as to give rise to the anterior and posterior 

 sacs on each side of the first, and a posterior sac on each side 

 of the second of these somites [as mentioned in a footnote on 

 p. 259, of my previous paper] . There is a similar arrangement 

 in connection with the ovaries — " receptacula ovorum " — which 

 consists of small backward, saclike protrusions of the posterior 

 septum of somite xiii. Each spermatheca is developed as an in- 

 vagination of the epidermis, forming a sac which is surrounded 

 by the muscular layers of the body wall. 



A memoir by Hermann Ude ('Zeit. fiir wiss. Zool.,' xlvi, 

 pp^ 85 — 142) on the dorsal pore of Earthworms, deals chiefly 

 with the structure of the body wall ; unfortunately figures are 



