1867.] The Systematic Study of Annelids. 355 



moulded that the power of investigating anatomical and embryolo- 

 gical structures does not belong to them, whilst they may possess the 

 most acute perception of specific differences of form and exhibit 

 great patience and skill in the collection and arrangement of speci- 

 mens. There are other men who have no sympathy with the accu- 

 mulators of species, and see but little value in such work, devoting 

 themselves rather to anatomical and physiological researches. There 

 is work for both classes of zoologists, both are valuable labourers ; 

 for men combining the powers of the two are few and far between. 

 It is to the first class that we look for an extended knowledge of 

 the Annelida ; we believe we have shown that there is a wide but 

 well-defined field of study in the Chaetopodous Annelids — and trust 

 that some fresh workers may be induced to enter on it. 



One word remains to be said with regard to each of the books 

 in particular, the names of which stand at the head of this article. 



We must warn intending " scolecologists " against the ' British 

 Museum Catalogue of Worms,' which is very far indeed behind its 

 time, and will be of but little use. It would be unjust to blame Dr. 

 Baird for this, whose name stands as editor. The work is really the 

 old notes accumulated during many years by Dr. Johnston, and was 

 almost in its present condition ten years since, when it was quite up 

 to the time. Grube's researches on, and classification of, Annelida, 

 have since become everywhere recognized, and now the Catalogue 

 can only be found useful as furnishing a list of localities and some 

 few observations on habits, colour, &c, by that very excellent 

 observer, the late Dr. Johnston. 



Kinberg's work on the Ajohroditea, collected by the exploring 

 ship ' Eugenie,' is of great value, since it is written in Latin, con- 

 tains the definitions of many new genera and species, and is well 

 illustrated. 



Schmarda's work contains descriptions and coloured illustrations 

 of a great number of species from all parts of the world. 



Ehlers' Borstenwiirmer promises to be a most complete and 

 valuable work as far as the characters of genera are concerned. The 

 large, finely drawn plates are among the most beautiful we have 

 seen. The work is, however, chiefly interesting to the anatomist. 



In 1865, A. J. Malmgren, one of the indefatigable Scandinavian 

 zoologists who number amongst them Sars, Loven, Steenstrup, Lill- 

 jeborg, Kroyer, and Kinberg, published the first part of a work on 

 the North Sea Annelids (5), which will be of the greatest value to 

 the English Student. The descriptions, localities, and such matters 

 are given in Latin, and hence ignorance of the Swedish tongue need 

 not deter any one from using the book. The part already issued 

 contains the species belonging to the Aphroditacea, Polynoinia, 

 Acoetea, Sigalionina, Phyllodocea, Nephthydea. and Lycoridea, 

 illustrated with detailed drawings of the heads, seta?, feet, and other 



