12 Mr. F. E. Beddard on the 
EXPLANATION OF PLATES I. & IL. 
(All the figures refer to Munna neozelanica. | 
Fig. 1. Dorsal view (taken from a rather small female), showing some of 
the appendages only. x 19. 
Fig. 2. Antennule, x 52, 
Fig. 3. Lateral portion of the head, showing the eyes and the insertion of 
the antennules and antenne (from a smaller specimen), X 52. 
Fig. 4. Upper lip, with front part of the head. a, from above, X 22; 6, 
from below, x 52. 
Fig. 5. Mandibles: a, extremity of right mandible, x 125; 0b, palp of 
mandible, x 90. 
Fig. 6. Lower lip, x 52. 
Fig. 7. Maxillipede, x 52. 
Fig. 8. First pair of legs: a, of female, x 52; 6, of a young immature 
male, X 52; c, of a young male, more developed, x 52; d, of 
fully developed male, x 25, 
Fig. 9. Second pair of legs (of male), x 23. 
Fig. 10. Fifth pair of legs (of male), x 25. 
Fig. 11. First pleopoda: a, of female, forming an operculum, x 23; 4, 
of male, forming male organ, from below, x 52; c, extremity of 
the same, from above, showing ducts &e., x 62. 
Fig. 12. Second pleopoda of male, x 52. 
Fig. 13. Third pleopoda, x 52. 
Fig. 14. Exopodite of fourth pleopoda(?), x 52. 
Fig. 15. Uropoda, x 90. 
I].—Note upon the Encystment of AXolosoma. 
By Frank E. Bepparp, M.A., F.R.S.E. 
THE observations to be recorded in the present note were 
made upon material kindly supplied to me by Mr. O. H. 
Latter, Science Master at Charterhouse. Knowing my 
interest in this group of Worms, Mr. Latter was so good as 
to forward me three tubes containing decaying plants from an 
aquarium, among which were a large number of specimens 
of one of the species of Mo/osoma with red oil-globules in the 
integument. ‘I'wo or three individuals were found in every 
sample of the water from these tubes examined with the 
microscope ; they were of varying sizes, some being twice or 
even thrice the bulk of others: reproduction by gemmation 
was not going on with any vigour—a fact possibly due to the 
commencement of the cold weather; nor, on the other hand, 
were there any indications whatever of sexual maturity. 
With the cessation of the asexual method of reproduction one 
would perhaps expect to meet with some indication of the 
acquirement of sexual organs; but no such indication was 
observable in any of the individuals which I submitted to 
exainination. ‘The sexual organs of dolosoma Ehrenbergit 
