120 Mr. F. FE, Beddard on the 
in diameter at the clitellum ; it is of an intense brown colour, 
almost black, the interseemental g erooves being grey. Perrier 
does not mention the colour of his specimens. 
The only points in the structure of the worm to which I 
wish to call particular attention are the calciferous glands, 
which were mistaken by Perrier for a part of the circulatory 
system; the structure lettered caw in his figure * is really a 
calciferous gland T of a conical form; a blood-vessel arising 
from the dorsal vessel enters this gland at the apex, and looks 
very much as if it were simply continuous with it ; however, 
in the specimen in the Vienna Museum the blood-vessel gives 
off a branch which ramifies over the surface of the gland 
before it enters its substance ; this does away with the resem- 
blance which the gland bears to a simple enlargement of the 
vascular trunk which supphes it. In the segment in front of 
this, z. e. the twelfth, is a large body which appears to be in 
connexion with the calciferous gland. This is really a 
dilated ‘heart,’ and there is another pair equally or nearly 
equally large in the next segment in front. The condition of 
this specimen did not permit of a conclusive settlement of 
this question; but I have been able to get some evidence in 
favour of this view of the anatomy of the parts. 
A portion of the contents of the body lettered H im the 
drawing (Pl. VII. fig. 2) was extracted and teased in gl 
cerine ; it was evidently simply a blood-clot. On the other 
hand, a portion of the contents of the body, lettered Ca, which 
I take to be a calciferous gland, showed a series of elongated 
blood-clots which were surrounded by a layer of granular 
débris ; these clots were highly suggestive of the coagulated 
contents of the bloeod-spaces which he in the folds of the 
calciferous glands of other earthworms; the granular sub- 
stance round the clots would be in this case the remains of 
the epithelium. As to the connexion between the calciferous 
glands of each side and the heart, which Perrier figures, it 
undoubtedly oceurs, though per haps it is more apparent than 
real. In the first ‘place “there is a septum between the two ; 
they occur in different segments, both being attached to the 
septum would give an appearance of an actual connexion ; 
} ? 
there may, however, be a short branch from the heart to the 
calciferous gland. 
The seta of Geoscofex are said by Perrier to possess no 
interesting peculiarity. 1 understand by this that he regarded 
them as similar to those of Lumbricus. I find, however (see 
* Loc. cit. pl. 1. fig. 15. 
ip JOye, 183 
3enham ons me that he has come to the same conclusion. 
