GKENEBAL INDEX 



Figures in thick type indicate the chief systematic reference. 



For synonyms, see tlie Systematic Index on pp. 163, 164. 



(Abbreviations^. = Arenicola, B. = Branchiomaldane.) 



Abranches (Cuvier), 12. 



Abundance of A. marina, 97, 100 



Achaetous body-segment of Arenicola, 

 36, 37; of post-lnrval A. marina, 

 78, ecaudata, 81 ; of B, vincenti, 

 149. 



Aelianus, 1. 



affinis, var. of A. assimilis, 84, 124- 

 132 ; external apertures of stato- 

 cysts and nephridia, 39 ; chaetae, 

 46 ; crotchets, 50, 51 ; gills, 60 ; 

 statocysts, 67-70 ; post - larval 

 stages, 80. 



Affinities of Arenicolidae, 159-162 ; of 

 B. vincenti with Arenicola, 155, 

 156. 



Albertus Magnus, 2. 



Aldrovandus, on classification of " In- 

 sects," 3. 



Alimentary canal of Arenicola, adult, 

 63-65, larva, 74, 75; of B. vin- 

 centi, 152. 



Annelides, 11 ; classification of Anne- 

 lids, 11-19, 



Annuli, segments subdivided into, in 

 Arenicola, 34, 36, 38, in B. vin- 

 centi, 149. 



Antsnnees (Lamarck), 12, 24. 



Apertures, external of Arenicola, 38, 

 39. 



Apodes (Lamarck), 12. 



Arenicola, 11, 13, 14, 20, 23, 24, 

 26, 27 ; distinguished from B., 

 28, 155, 156; defined, 29, 30; 

 historical account, 30-32 ; exter- 

 nal characters, 33-38, prosl.o- 

 mium, 33, 34, parapodia, 34-36, 

 peristomium, 36, achaetous body- 



segment, 36, tail, 37, 38, external 

 apertures, 38, 39 ; chaetae of noto- 

 podia, 39-48, of neuropodia (crot- 

 chets), 48-55; gills, 55-61 ; coelom 

 and septa, 61, 62; alimentary 

 canal, burrowing, 63-66 ; nervous 

 system and sense-organs (incl. 

 statocysts), 66-70 ; nephridia, 71 ; 

 reproductive organs, 72, 73 ; de- 

 velopment, 73-75 ; post - larval 

 stages, 75-82 ; the genus divided 

 into sections, 82, the caudate 

 species, 83, 84, the ecaudate 

 species, 84, 85 ; relationships of 

 the species, 156-159. 



Arenicolidae, 24, 25-28 ; inter- 

 relationships of members of, 156- 

 159 ; affinities of, 159-162. 



Arenicolites (burrows, fossil), 97 f.n. *. 



Arenicolo-Maldaniens (Mesnil), 27. 



Ariciea (Ehlers), 19, 20. 



Aristotle, 1. 



assimilis (A.), 84, 123-132 ; external 

 apertures of statocysts and ne- 

 phridia, 39 ; notopodial chaetae, 

 46-48 ; crotchets, 50, 51 ; gills, 60 ; 

 septal pouches wanting, 62 ; oeso- 

 phageal glands, 63 ; statocysts, 

 67-70; nephridia, 71; ova, 72; 

 post-larval stages, 80 ; relationship 

 to other species, 157-159. 



Audouin and Edwards, on classification 

 of Annelids, 15, 16, 24 ; on A. bran- 

 chialis, 139, 140. 



Bait, use as, of A. marina, 91, 99, 100 ; 



of A. brancTiialis , 144. 

 Easter, 7. 



