4 Catalogue of Chaetopoda 



refer to any of the marine worms above mentioned ; the description 

 of these is given in the following book, which is headed " De 

 Aquaticis." A similar practice was followed by a number of sub- 

 sequent writers, for instance, Eay and Linnaeus, who placed marine 

 worms among " Insects," and earthworms and parasitic worms in the 

 class " Vermes." 



During the next century and a half there appeared several 

 memoirs which included studies and figures of worms. Among these, 

 works by Columna ^ and Bonannus "^ are noteworthy for good figures 

 of a Serpulid and of a Nereid and its jaws ; Molyneux ^ gave figures 

 of the external characters and " an account of a not yet described 

 Scolopendra marina" evidently an Ajjhrodite ; Ellis * descril)ed and 

 figured tubicolous worms, and Peysonnel ^ published " Observations 

 upon the Sea Scolopendra," in which he described the external 

 features and the action of the pharynx of a nereidiform worm. 

 During this period there were also four works of more outstanding 

 importance by Willis, Eedi, Ray and Bonnet. In Willis' classical 

 account ^ of the earthworm the external features, gut, circulatory and 

 reproductive systems are described, and minutiae, such as chaetae, 

 dorsal pores, etc., are discussed. Eedi ^ described and figured 

 portions of the anatomy of Hirudo and Lwnibriais terrestris, he noted 

 the occurrence of different species of earthworms, figured Scolopendra 

 marina [a nereid] and its alimentary canal, gave descriptions and 

 figures of Hystrix marina [Aphrodite] and its alimentary canal, and 

 two figures of a Serpulid. Eay in his " Historia Insectorum " (1710) 

 divided " Insects " into those which undergo metamorphosis and 

 those which do not. The latter were subdivided into " Apoda " and 

 " Pedata." Among the " Apoda Terrestria " were placed Lumbrici 

 terrestres (of which Eay distinguished four kinds), and some parasitic 

 worms — "Lumbrici intestinorum " ; among the "Apoda Aquatica" 

 were ranged the Hirudines. The " Pedata " were classified according 

 to the number of feet present — six, eight, fourteen or many. Those 



1 Aquat. et Terr, aliquot Anim., pp. xxi, xxii, in Minus Cogn. Stirp., Eoma 

 (1616). 



" Recreatio Mentis et Oculi, in Obs. Anim. Test., Romae (1684), pars i, 

 cap. V, p. 30, tab. ii. 



='■ Phil. Trans. R. Soe. Lond., xix (1695), p. 405. 



* Nat. Hist, of Corallines, London (1755), p. 90, pi. 36, " Tubularia 

 arenosa Anglica" YSnhellaria] ; p. 92, pi. 34, " Corallina tnbularia nielitensis " 

 [a Sabellid] . • 



<■' Phil. Trans. R. Soc. Lond., li (1759), p. 35. 



" De Aninia Brutorum, Londini (1672), p. 47. 



" De Animalculis vivis. Ex Etruscis Latinas fee. P. Costac, Amstelae- 

 dami (1708), [1st Edit. 1684.] 



