1887.] Mr Frank E. Beddard on Earthworms. 175 
are situated after the clitellum, i.e., in the neighbourhood of the 
male generative openings. Each of the segments 16-20 (inclusive) 
is furnished with a single median papilla, which occupies a precisely 
similar position to that occupied by the median papilla of segment 
9, that is to say, it lies near to the anterior border of the segment 
(see fig. 11). The 18th segment possesses, in addition, a pair of 
papillae, situated just within and close to the male generative orifices ; 
these papillae are almost on the border line between this and the 
following segment. The next segment (No. 19) has also an addi- 
tional pair of genital papillae ; these are placed below and a little 
to the outside of the generative pores ; hence they are placed very 
close to the anterior border of their segment. 
In its internal structure this species does not present any remark- 
able features. 
The gizzard is in segments 8 and 9, and as usual these segments 
are not separated by a mesentery. 
In the same two segments are situated the spermathecm (fig. 12), 
which (see p. 173) are not very different in shape to those of the 
last species. 
The vesiculce seminales are in segments 11 and 12. 
The ovaries are in segment 13. 
The termination of the vas deferens is furnished with a prostate 
gland, which has the usual lobulated structure. 
The hearts are in segments 12 and 13, as is generally the case in 
Perichceta. 
Perichceta antarctica , Baird. 
Megascolex [Perichceta) antarctica , Baird, Proc. Linn. Soc ., vol. xi. 
(1873) p. 96. 
This species has been described by Baird from a specimen in the 
British Museum in the following terms: — “Body consisting of 
about 180 rings. Setae, surrounding the body, short, black, rather 
distant. Bings not keeled ; larger and more distinct at the anterior 
extremity, closer at the posterior end, and all smooth. Length 7 
inches.” Capt. F. W. Hutton, in his “ Catalogue of the hitherto 
described Worms of New Zealand,”* mentions this species, which is 
a native of New Zealand, and simply quotes Baird’s description. 
* Trans. New Zealand Instit vol. xi. (1878) p. 317. 
