SCOLECIDA. 
601 
SCOLECIDA 
BY 
E. Perceval Wright, M.A., M.D., F.L.S. 
I. Separate Publications. 
Krabbe, H. Reclierclies Helminthologiques en Danemark et 
en Islande. 4to, pp. 66, with 7 plates. Paris, London, and 
Copenhagen, 1866. 
In this work, which is a French edition of a memoir pub- 
lished by the Poyal Academy of Sciences of Copenhagen, the 
author details his observations on the Entozoa causing such 
serious diseases in Iceland, and also gives the results of the pre- 
liminary researches made by him on the parasites of the dog 
and cat in Copenhagen. It is especially valuable on account of 
its statistical details. 
Pagenstecher, H. a. Die Trichinen, nach Versuchen im Auf- 
trage des grossherzoglich-badischen llandelsministeriums 
ausgefiihrt am zoologischen Institute in Heidelberg. 
Leipzig, 1866, pp. 112, with two plates. 
This is the second edition of a work originally published in ' 
1864, but which seems to have escaped the notice of the Recorder 
of that year. It contains the results of numerous experiments 
made by the author in conjunction with C. J. Fuchs at the 
Zoological Institute in Heidelberg, preceded by an historical 
account of our knowledge of the Trichinae, and followed by a 
natural history of those worms and a notice of the means 
(prophylactic) to be adopted for getting rid of, or at all events 
diminishing, this plague. 
Schneider, A. Monographic der Nematoden. Berlin, 1866, 
pp. 357, 28 plates and 130 woodcuts. 
This important monograph consists of two parts. The first 
contains a general introduction to the study of the Nematoid 
worms, and treats of the characters which the author has found 
of most importance in determining the genera and species. It 
further gives a detailed catalogue of all the species, of which 
many are described as new, in the collection of the Berlin 
Museum. The second part treats of the anatomy of the Nema- 
toids and of their development, and concludes with a chapter 
on the systematic position of the worms in general. 
