162 MR. F. E. BEDDARD ON WORMS [Feb. 16, 



The male pores are upon segment xviii., comparatively near to 

 the ventral median line ; they are not, as is, for example, the case 

 with Perichceia affinis, at the sides of their segment. The setse of 

 segment xviii. are present l)etween the two pores, but they cease to be 

 visible some little way from the pores on each side. The pores them- 

 selves lie in the direct line of the circle of setae. Close to each of the 

 apertures of the atria is a group of rounded orifices, which in one 

 specimen showed the following arrangement : — There were four on 

 one side and five upon the other, each group of pores lyuig in a circle 

 below, and to the inside of, the atrial pores. The arrangement there- 

 fore, as well as the number of these pores, shows some differences from 

 PerichcBta aspergillum ; I occasionally observed fewer than four pores, 

 but never anything like so many as eleven, which Perrier states to be 

 the number found in Perichceta aspei-gillum. When the cuticle is 

 stripped oflP, these pores become very obvious and can be easily counted 

 with a lens. Examined under the microscope they do not present 

 the appearance of pores, but of solid papillae covered by a reticulation ; 

 they are in fact, as I have already pointed out ^ for Perichceta asper- 

 gillum and other species of the genus, the openings of masses of 

 unicellular glands. 



I could not see the spermathecal pores, and there was no develop- 

 ment of accessory papillae corresponding to those which have just 

 been described as occurring near the atrial pores. This is another 

 point in which Perichceta bermudensis differs from Perichceta asper- 

 gillum, where such papilllae have been described and figured by 

 Perrier. 



The ^^^■^■arrf occupies segments viii.-x., the septa of those segments 

 being absent ; the remains of the septa are to be recognized in a series 

 of ligamentous bands which attach the gizzard to the parietes ; of 

 these there are three pairs : two on each side are attached, close to 

 each other, not to the gizzard itself, but to the septum which lies 

 just in front of it ; they pass obliquely backwards and outwards ; 

 behind these and nearly at the posterior extremity of the gizzard is 

 another band on each side. The walls of the oesophagus behind the 

 gizzard are much folded (internally) and very vascular in segments 

 xii.-xiv., particularly in segment xiii. ; this region no doubt represents 

 the calciferous glands of other Earthworms, which do not here form 

 distinct diverticula. 



In segments v. and vi. are " hlood-glands" which present aracemose 

 appearance. 



The intestine is provided with the usual pair of caeca. 



The sperm-sacs are in segments xi. and xii. 



The curved duct of the atrium opens directly on to the exterior, 

 and not through a dilated terminal portion ; it is surrounded by 

 innumerable small white glands, which correspond to the pores 

 which surround the external orifice of the atrinm. 



The ovaries are in segment xiii. 



^ " Contributions to the Anatomy of Earthworms, with. Descriptions of some 

 New Species,"' Q. J. Micr. Sci. vol. ixx. p. 461 et seq. pi. xxix. figs. 3, 4, 5. 



