394 Recent Literature. [ April, 
examined seventy species out of a hundred and sixty-eight that 
are certainly known. The author considers Rhodope varani to 
be a nudibranch, and excepts the Microstomida and the,Nemer- 
tines from the Turbellaria. The former differ from other Turbel- 
laria in having a complete peri-cesophageal nerve-ring, as well as 
in being dicecious, and in their power of multiplying by budding. 
Thus the Turbellaria consist only of the Rhabdoccelida and Den- 
droceelida, the former of which Professor Graff divides into (1) 
Accela, forms without nervous system, or excretory organs; as 
well as without a digestive tract and parenchym tissue, but withan | 
otolith ; (2) Rhabdoccela, with all the foregoing except (usually) — 
the otolith, and (3) Alloioccela. 
Tux ZooLocicaL RECORD FOR 1881.1—This Record is aboutas 
bulky as its predecessors, in fact numbering thirty-six pages more 
than that for 1880, showing that the literature for 1881 was not 
less in extent than in previous years. The volume appeals 
promptly, within a year from the close of the year recorded. The — 
staff of recorders is eleven, not including the editor, Mr. Rye. It a 
appears that the year 1881 was, as far as work on mammals |S 
concerned, rather a dull one, no fresh, separate works of impor 
he number — 
work which may already have been done by some one py 
with the exception of the part on Vertebrates, promptly ee =| 
appearance the first of January. It is nearly twice as b s aland 
nglish Record, and fuller abstracts are given of morphol on f 
embryological papers and works, as well as the characte e e 
genera. The list of recorders amounts to thirty-four- P. Mayet | 
eral editor is Professor J. Victor Carus, assisted by De. pm 4 
1 The Zoblogical Record for 1881; being volume eighteenth of the Ra gro. o 
logical Literature. Edited by E. C. Rye. London, John van E ge i 
, *Loblogischer Fahresberich für 188r. Herausgegeben von der Zoölogische? E 
tion zu Neapel. Abtheilung i-iii. 1882. Leipzig, W. Engleman™ 
