192 MH. r. E. BEDDAED ON THE STEFCIUEE [Mar. 5, 



I^The alimentary canal conforms to the type characteristic of this 

 genus. The gizzard, which is distinctly stout, lies in the fifth seg- 

 ment. The oesophagus is rather a narrow tube up to the xivth 

 segment, where it dilates, but still retains its comparatively thick 

 walls and may therefore be still termed o3sophagus. A segment 

 or two later (I caunot unfortunately be precise) the thin-walled 

 intestine begins. In the three segments ix., x., xi., there are — 

 one on each — the usual three median and ventral calciferous pouches 

 whose relations call for no special comment ; they are apparently 

 common to all the species of this genus. The calciferous glands of 

 the xiiith segment are large and partly encircle the gut. They are 

 imperfectly divided into a dorsal and a more ventrally situated 

 half. From each arises a longish and slender duct which con- 

 vei-ges towards, and finally unites with the other before its opening 

 into the oesophagus. The two orifices are laterally situated upon 

 the oesophagus. 



Organs of Reproduction. — As my specimen was rather too large, 

 and not sufficiently well preserved to be conveniently studied by 

 the method of transverse sections, lam compelled to* limit myself 

 in describing the structure of the organs of reproduction to such 

 points as could be ascertained with the help of a lens. 



As in other species of the genus, the sperm-duct dilates into a 

 large oval chamber immediately after leaving the funnel. This 

 dilatation lies in the xith segment and is attached to its thick 

 posterior wall. 



In contact with and to the inside of each of these dilatations 

 of the sperm-duct is a thin-walled sac. The two sacs are not 

 fused or even in contact in the middle line, but they represent, 

 I take it, the sperm-reservoirs of other earthworms. They appear 

 to be continuous with the single pair of sperm-sacs through a 

 deficiency in the thick septum, which also allows the oesophagus to 

 pass into the next segment. 



The sperm-sacs, as is the case with the other species of this genus, 

 are of considerable length and are separable very distinctly into 

 two regions. The total length of each of the two sperm-sacs, in 

 the contracted condition of the worm, is about 30 mm. from the 

 septum to which they are affixed anteriorly to the point upon the 

 intestine where they terminate posteriorly. The posterior more 

 swollen region of each of the tvi-o sacs is longer than the almost 

 thread-like anterior portion ; it measured 18 mm. The demarcation 

 between the two regions is extremely abrupt, though the posterior 

 part of the sperm-sac has not at that point acquired its full dimen- 

 sions ; it becomes gradually wider later until it again gradually 

 narrows towards its posterior termination. The dilated region 

 of the sperm-sacs occupies some thirteen segments, where they for 

 the most part conceal the underlying dorsal vessel. Anteriorly 

 and posteriorly, but only for one or two segments at each end, the 

 sperm-sacs are not constricted by and do not bulge out between 

 the intersegmental septa. In the middle of the course of the sacs 

 there are these constrictions, which in the preserved and therefore 



