128 Miscellaneous. 



aMy translate.!, by Dr. Gilbert Bjurnc, the Linacre Professor of 

 Comparative Anatomy at Oxford. 



Designed for the advanced student, this volume, like its pre- 

 decessors, is of a hii^hly technical character, and bristles with 

 terminology as yet unfamiliar even to those for whom it is in- 

 tended. 8j fur from this being a drawback, however, it is, on the 

 contrary, a valuable feature — making for clearness, exactitude, and 

 condensation. 



Not since the appearance of Riy Lankester's article " MoUusca," 

 in the ninth edition of the ' Encyclopoedia Britannica,' has any work 

 on this group appeared comparable to the present volume ; hence 

 there can be no question absut the welcome that this latest contri- 

 bution will receive. The ' Eucyclopcedia' article marked an epoch 

 in the study of the lloUusca, and for many years, indeed, remained 

 ihe only effectual work of reference on the subject : no more 

 striking testimony as to its solid worth can be found than the fact 

 that all the more important conclusions therein arrived at find a 

 place in the volume now before us. 



In o!ie or two minor matters we find causo for complaint. The 

 chief of these concerns the unnecessarily vague statements as to 

 the number of living species of MoUusca. Thus on p. 35 we read : 

 " Descriptive zoologists have enumerated more than 28,000 species 

 of living MoUusca, of which more than half are Gastropods " ; while 

 on p. 142 we meet with the statement that "Some thirty thousand 

 species of Gastropoda have been enumerated, of which twenty 

 thousand belong to the present epoch." Comment of this kind may 

 .savour of " quibbling" : we do not mean to be hypercritical, but 

 desire simply to draw attention to a small point which might be 

 altered in a future edition. 



MISCELLANEOUS. 



Note of Correction. 



Parorchis, n. norn., for Zeur/orcJiis, NicoU, 190^1. By Wm. Xicoix, 

 M.A., B.Sc, Gatty Marine Laboratory, St, Andrews. 



The name Zeujorchis, proposed (Ann. & Mag. Nat. Hist. (7) xvii. 

 p. 519) for a Trematode genus represented by Z. acanthus, mihi, 

 from the cloaca of Larus arrjentatHS, having previously been assigned 

 by Stafford (Zool. Anz. sxviii. (1905) p. G91) to a genus parasitic 

 in Roptilia, it is necessary to alter this. In its place I propose the 

 name Parorchis. 



