356 The Systematic Study of Annelids. [July, 



appendages, executed with great care. We have also received from 

 Dr. Malmgren an illustrated Catalogue of the northern Annelids in 

 the Stockholm Museum, in which many additional species are 

 figured, and some valuable remarks on the species in the British 

 Museum collection examined by him, are given. The synonymy of 

 species, which is always a troublesome matter, is unusually per- 

 plexing in the Annelids, and Dr. Malmgren has devoted great pains 

 and research to setting it on a right basis. 



The brilliantly illustrated volumes published by M. de Quatre- 

 fages in 1865 will be found very useful. They contain most excel- 

 lent chapters on the anatomy and general natural history of the 

 class, and descriptions of many species. The absence of figures of 

 many r of the new species renders them rather obscure. M. de 

 Quatrefages has not consented to the minute generic divisions of 

 some of his contemporaries, and indeed we venture to think Dr. 

 Malmgren has carried this method of arrangement a little too far ; 

 in the family Polynoina, the genera proposed by Kinberg seem to 

 us sufficiently minute — they were six in number ; but Dr. Malm- 

 gren is not content with less than seventeen. 



A work on the British Annelids and Turbellarians is promised 

 by the Kay Society. Dr. Mcintosh is the gentleman who has 

 undertaken this gigantic task, and he really needs all the help that 

 can be given to him by local and other naturalists. Specimens and 

 coloured drawings from life are the only way in which this help can 

 be given, and we trust that Dr. Mcintosh may not long have to 

 grapple with the Annelids single-handed. 



EXPLANATION OF THE PLATE. 



Fig. 1 . Head of Lepidonotus squamatus, after Kinberg ; L. cephalic lobe ; pt. 

 prostomial tentacle ; a, antennae ; P. palpi ; p. c. peristomial cirri. 



Fig. 2. Head of Harmothoe imbricata, after Malmgren ; letters as in Fig. 1. 

 Fig. 3. Elytron of Lepidonotus squamatus. 

 Fig. 4. Elytron of Harmothoe imbricata. 

 Fig. 5. Notopodial seta of L. squamatus. 

 Fig. 6. Neuropodial „ „ 



Fig. 7. Foot and appendages of L. squamatus. ntc. notopodial cirrus ; nrc. neu- 

 ropodial cirrus ; s. setae. 

 Fig. 8. . Foot of H. imbricata ; letters as in Fig. 7. 

 Fig. 9. Notopodial seta of H. imbricata. 

 Fig. 10. Neuropodial seta „ „ 



Fig. 11. Notopodial seta of Nereis plagica (after Malmgren). 

 Fig. 12. Head of Nereis pelagica ; letters as in Fig. 1. 

 Fig. 13. Foot of N. pelagica ; letters as in Fig. 7. 

 Fig. 14. Seta of Sabellaria spinulosa (Malmgren). 

 Fig. 15. Head of Clione Duneri (Malmgren). 

 Fig. 16. Seta of Praxilla gracilis (Malmgren). 

 Fig. 17. Seta of Leprea textrix (Malmgren). 

 Fig. 18. Seta of Leucodore ciliata. 

 Fig. 19. Head of Clitellio arenarius. 

 Fig. 20. Seta of Phreoryctes Menkianus. 

 Fig. 21. Seta of umbricus terrestris. 



