6 Verm . 
VERMES. 
[Burger, 0.] (2) Summary of Researches into the Anatomy and His- 
tology of the Nemertines, with Contributions to their Classification. 
Ann. N. H. vi, pp. 394-409. 
A translation of Burger (1). 
Camerano, L. (1) Primi Momenti della Evoluzione dei Gordii. Mem. 
Acc. Tor. xl, pp. 1-19, 2 pis. 
On the early stages of the development of Gordius. 
■ . (2) Nuove osservazioni intorno ai Gordii Italiani. III. Gordii 
di Sardegna. Boll. Mus. Zool. Anat. Comp. Torino, v, No. 83, 2 pp. 
Gordii from Sardinia. 
Cerfontaine, Paul. Recherches sur le Syst&me Cutan6 et sur le 
Syst&me Musculaire du Lombric terrestre. Arch. Biol, x, pp. 327- 
428, pis. xi-xiv (also in Mem. Cour. Ac. Belg. 4to, t. lii, 108 pp., 
4 pis., andipreliminary account ;in Bull. Ac. Belg. xviii, pp. 604-619). 
An important memoir on the anatomy and histology of the skin and 
muscles. 
Chatin, J. (1) Presence de YHeteraJcis maculosa chez le Faisan. Bull. 
Soc. Philom. ii, p. 26. 
, . (2) Sur l’Enkystement pr6mature de YHeterodera schachtii. 
T. c. pp. 26-28. 
. (3) Le Mouton peut-il propager V Heterodera schachtii ? C.R. 
Soc. Biol. 1890, pp. 17 & 18. 
The sheep is apparently unable to aid the dissemination of this beet- 
root enemy. 
Claus, C. On the Morphology and Phylogeny of the Organization of the 
Cestoda. Ann. N. H. v, pp. 416-429. 
Translation of memoir cited in Zool. Rec. 1889. 
Cobb, N. A. (1) Arabian Nematodes. P. Linn. Soc. N.S.W. v, 
pp. 449-467. 
Describes a formula to be used in describing Nematoda , e.g. : — 
Pharynx. Nerve-ring. ^gck^ Vulva. Anus. 
Lengths ... 1* 8*2 17*3 52* 93*3 
-1-77. 
Diameters . . *9 1'5 1'6 1*7 *8 
Pharynx. Nerve-ring. ^gck^ Vulva. Anus. 
1*77, the number to the right, represents the length of the Nematode 
in millimetres. All the other numbers are percentages of the length. 
The upper numbers give, in percentages of the total length, the distances 
from the anterior end to the bottom of the pharynx, to the centre of the 
nerve-ring, to the posterior end of the oesophagus, to the vulva, and to 
the anus. The numbers on the lower side of the line similarly relate to 
the diameters of the animal at these points. Several species are described, 
some new, and their formulae are given. 
