44 Verm. 
XV. VERMES. 
NEMATHELMINTHES. 
NEMA TO DA 
(including Gordiacea). 
General Biology. 
Anatomy and Biology of Oxyuris curvula Rud.; Ehlers, H. (120): 
Oxyuris flagellum Ehr. and J scar is lumbricoides L.; Xassonow (278). 
Anguilluliasis; Pappenheim (291); Braun (55); Leichtenstern (198); 
Zinn (416). 
Ankylostomiasis; Looss (212); Leichtenstern (199 & 200); Korbelius 
(183); Anon. (6). 
Buccal armature of A scans conocephalu<s identical with that of A. lumbri¬ 
coides-, Guiart (157). 
Classification. Xematoda placed with Arthropoda in the series Chitino- 
phora Perrier ; Maupas (244). 
Cuticle of Ascai-is megalocephala ; Toldt (373). 
Development of Ascaris megalocephala ; Boyeri (50). 
Development without heterogony of Angiostoma fuscovenosum, n. sp.; 
Railliet (315). 
Ecdysis. Progressive exuviation (mues devolution) of intrinsic causa¬ 
tion distinguished from Seasonal exuviation of extrinsic origin as in 
Mammals, Birds and Reptiles: Exuviation and Encystment of Angiostoma 
limacis Duj., p. 590 et seq., correlation of exuviation and growth in Cepha- 
lobus ciliatus, independence of the two processes in Rhabclitis caussaneli , 
correlation between periods of exuviation and differentiation of genital 
organs in widely different forms ; Maupas (244). 
Eggs of Ascaris megalocephala. Two kinds of unfertilised eggs. The 
first polar mitosis may occur but the polar body is not extruded; 
Xussbaum (284). 
Encapsulement. Capsules and Encapsulement of Trichina , etc., distin¬ 
guished from the Cysts and Encystment of Rhabclitis, etc., pp. 599 & 600; 
Maupas (244). 
Encystment. Encysted larvae endure desiccation but the determining 
v O 
cause of the encystment is hunger ; Maupas (244) : Filaria quadrituber- 
cv.lata\ Leidy, in an eel ; Schulze, F. E. (343). 
Environment. Contact requirements (Contactbedurfnis) : Nematodes 
from Scomber kept alive for 1-3 months in a compressed sponge saturated 
with cod liver oil; Dewitz (113). 
Expulsion of Ascaris lumbricoides ; Alessandrini (3). 
Havoc wrought by Tylenchus devastatrix (Kuhn) ; Xypels (286). 
Histology. Phagocytic organs ; Xassonow (279) : quasi-peritoneal cells 
in Oncholaimus ; Schimkewitsch (335): cuticle of Ascaris ; Toldt (373). 
Historical account of Filaria loa ; Blanchard (40). 
Larval period comprises 4 stages each culminating in an exuviation ; 
when a cyst is formed it is a modification and specialisation of the second 
exuvia ; Maupas (244). 
Life history of Ascaris lumbricoides L. and Oxyuris flagellum Ehrb. ; 
Xassonow (278). 
Metamorphosis of Filaria bancrofti Cobb, in the body of Culex ciliaris 
L. ; Bancroft (17). 
Oviparity and Ovo-viviparity co-existing in the same species ; Maupas 
(244;. 
