ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
Ml 
musculo-glandular wall, and the uric granules are swept out by the 
genital funnels which are modified nephridia. 
Notes on Annelids.* — Prof. W. C. M £ Intosh points out the specific 
distinctness of Lepidonotus Waldbergi Kinberg and L. clava Montagu, 
which Baron de Saint-Josepli has recently united. He also shows that 
Sigalion squamatum Delle Chiaje, S. Mathildse Aud. and Ed., and S. 
Buslcii M‘Intosh, are distinct. 
Epitokous and Polymorphic Forms of Dodecaceria concharum.f 
— MM. F. Mesnil and M. Caullery continue their study of the “ poly- 
morphic development” of this Cirrhatulid. They distinguish five 
forms which differ (1) structurally (in the form of the setae) ; (2) as 
to their parasites ( Gonospora is constant in two of the forms, and always 
absent in three) ; and (3) in their mode of development. There seems 
little doubt that there is but one species, but a satisfactory solution of 
the relations of the different forms requires that the development of 
each be traced cib ovo. 
Early Stages in Development of Serpulidae.J — M. Albert Soulier 
has studied this in Serpula infundibulum and Eydroides pectinata , with 
special reference to the formation of the mouth and anus in the trocho- 
phore. He finds that the blastophore gives rise to both, and that its 
apposed lips form the longitudinal cellular strand which extends 
between them on the ventral surface of the trochophore. 
Proboscis of Glyceridae.§ — M. Ch. Gravier describes (a) the pha- 
ryngeal sheath, ( b ) the pharyngeal proboscis, and (c) the ventriculus, 
which compose the massive proboscis-organ of Glycera convoluta and 
allied forms. He gives an account of the complex innervation and the 
highly developed sensory structures. The proboscis has a veritable 
nervous autonomy, accessory to that of the body generally. 
Degeneration in Earthworms. || — Dr. K. Hescheler continues hi* 
study of regenerative phenomena in Allolobophora terrestris Sav., All. 
caliginosa Sav., and Lumbricus herculeus Sav., especially the first. The 
first five segments were removed, and the re-growth observed. 
The earlier stages, lasting until about the end of the first week, 
were somewhat as follows. A scar-tissue, consisting of lymph-cells, is 
first formed ; in a few hours spindle-shaped cells appear and are arranged 
in regular rows, continuing the longitudinal musculature. The scar- 
tissue is covered in a few days by a new and homogeneous epidermis, 
apparently formed from the old one. The gut closes by the fusion of 
the cut surfaces, and is always separated from the epidermis by the 
scar-tissue. Most of the other organs end with their stumps in the 
scar-tissue, and a special cap of this covers the end of the nerve-cord. 
Mitoses are rarely to be seen, and the elements with large nuclei 
which afterwards occur are still absent. 
In the next stages the new-formation of the central nervous system 
and the fore-gut are the great events. Mitoses occur abundantly, and 
* Ann. Nat. Hist., ii. (1898) pp. 103-18 (1 pi.). 
f Comptes Rendus, cxxvi. (1898) pp. 1069-72. 
X Tom. cit., pp. 1666-9. § Tom. cit., pp. 1817-20. 
|| Jenaische Zeitschr. f. Natimviss., xxxi. (1898) pp. 521-604 (6 pis.). 
