743 
ZOOLOGICAL LITERATURE. 
Filar la oculi des auteurs, observe au Gabon (cote occi- 
clentale d^Afrique) . Compt. Rend. lix. Novembre 7, 1864, 
pp. 743-748. 
Heck, M. Van den. Sur les Taenia d^Abyssinie, extrait d^une 
lettre a M. van Beneden. Bull. Acad, de Bruxelles, 2® ser. 
t. xviii. 1864, pp. 386-387. 
Knappert, B. Bijdragen tot de ontwikkelingsgeschiedenis 
der Zoetwater Planarien. Utrecht, 1865, pp. 1-39, two 
plates (reprint). 
Krabbe, H. Die Echinococcen der Islander. Arch. furNaturg. 
1865, pp. 110-126. 
Lespes, Ch. Sur quelques points de FOrganisation des Echino- 
rhynques. Revue des Societes savantes, p.370, Paris, 1864; 
and extract in Journ. de PAnat. et Physiol, p. 683, 1864. 
Leuckart, R. Zur Entwickelungsgeschichte der Ascaris nigro- 
venosa, Zugleich eine Erwiederung gegen Herrn Caiidi- 
dat Mecznikow. Reichert u. Du Bois-Reymond^s Archiv, 
1865, pp. 641-658. 
Helrainthologische Experimentaluntersuchungen. Nachr. 
Gesellsch. Wiss. Gott. 1865, pp. 219-232. 
Lindemann, K. Zur Anatomic der Acanthocephalen. Bull. 
Soc. Nat. de Moscou, 1865, pp. 484-498, pis. 10-12. 
The author describes a new genus and two new species. 
Macalister, a. On the presence of certain secreting organs 
in Nematoidea. Ann. & Mag. Nat. Hist. 1865, July, pp. 
45-48. 
The author describes a series of four small pyriform bodies, 
with long fine ducts opening just above the anus, which he 
regards as the representative of the Malpighian tubes in the 
Articulata. 
Marcet, W. Chemical examination of the fluid from the peri- 
toneal cavity of Ascaris megalocephala. Proc. Roy. Soc. 
vol. xiv. No. 72, p. 69 (read Eeb. 9, 1865). 
The author concludes that nutrition in these Nematode 
worms can be carried on by means of a fluid containing few 
other substances besides albumen and phosphate of potash. The 
principal constituent of the juice of flesh, however, is phosphate of 
potash, both tri- and bibasic : the ascaris- and flesh-fluid are 
both acid ; in both there is but a very small quantity of chlo- 
ride, very little or no soda, and little or no lime ; so that here 
we have an interesting parallel between the assimilation in the 
highest and lowest animals. 
