1G8 



General Index 



marina (A.), 83, 86-102; external 

 apertures of nephridia and stato- 

 cysts, 39 ; notopodial chaetae, 42, 

 43,46-48; crotchets, 48-50 ; gills, 

 55, 59 ; septal pouches, 62 ; oeso- 

 phageal glands, 63 ; burrows, 64, 

 65 ; food, 65, 98 ; castings, 65, 99 ; 

 statocysts, 67-69 ; nephridia, 71 ; 

 ova and sperms, 72 ; post-larval 

 stages, 76-79; relationship to 

 other species, 157-159. 



Mesnil, on Clymenides, 27, 76, 77 ; on 

 Arenicolo-Maldaniens, 27. 



Mesobranches (Latreille), 14, 24. 



Metastomial grooves of Arenicola, 38. 



Molyneux, 4. 



"montagui" (A.), = ecaudata, 134, 

 135. 



Mouth of Arenicola, 38. 



Miiller, on classification of worms, 8, 

 9, 10, 15. 



Nephridia, of Arenicola, 71 ; vestigial 



in post-larval A. branchialis, 82 ; 



of B. vincenti, 153. 

 Nereideae, 13, 19. 

 Nervous system, of Arenicola, 66 ; of 



B. vincenti, 153. 

 Neuropodia, two types of, in Arenicola, 



35 ; of B. vincenti, 149. 

 "nodosa" (A.), = ecaudata, 134. 

 Nolopodia, of Arenicola, 35; of B. 



vincenti, 149. 

 Nuchal organ of Arenicola, 38, 39 ; of 



B. vincenti, 149. 



Oesophageal connectives of Arenicola,, 



66. 

 Oesophageal glands, of Arenicola, 63, 



of B. vincenti, 152 ; variation in 



number of, in A. pusilla, 122, in 



A. assimilis, 131. 

 Oligochaeta, 17, 18, 19. 

 Opheliidae, affinities with Arenicolidae, 



160, 161, 162. 

 Ova, of Arenicola, 72 ; of A. cristata, 



74, 110; of B. vincenti, 153, 154. 



Pallas, 7, 8, 9, 10. 



Parapodia, 24 f.n. 3 ; of Arenicola, 34, 

 35, 37 ; of B. vincenti, 149. 



Pennant, 7. 



Peristomium, denned, 24 f.n. 2 ; of 

 Arenicola, 37, 78, 80 ; of B. vin- 

 centi, 149. 



Peysonnel, 4. 



Phanerocephala (Benham), 21. 



Pinna.te type of gill of Arenicola, 58-61. 



Pit on parapodia of A. cristata and 

 loveni, 35, 36. 



Pliny, 1, 2. 



Polychaeta (Grube), 17 ; classification, 

 18-25. 



Post -larval stages of Arenicola, 30, 

 75-77 ; of A. marina, 77-79, 100 ; 

 cristata, 79 ; assimilis var. affinis, 

 80; ecaudata, 80, 81, 137; bran- 

 chialis, 81, 82. 



Prostomium, defined, 24 f.n. J ; of 

 Arenicola, 33, 34, 78, 80; of B. 

 vincenti, 148. 



pusilla (A.), 84, 114-123; notopodial 

 chaetae, 41, 46-48; crotchets, 51, 

 53 ; gills, 59 ; septal pouches 

 absent, 62; Oesophageal glands, 

 63 ; ova, 72 ; development, 74 ; 

 relationship to other species, 157- 

 159. 



Pygidium, 33; chaetiferous segments 

 formed immediately in front of, 

 37, 75. 



Quatrefages, on classification, of 

 worms, 16, of Annelides, 19, 24. 



Eapacia (Grube), 18, 24. 



Kay, on classification of Insects, 4, 5. 



Redi, 4. 



Reproductive organs, of Arenicola, 72, 

 73 ; of B. vincenti, 153. 



Rondeletius, 3. 



Rostrum of crotchet, of Arenicola, 48- 

 54 ; of B. vincenti, 151. 



Relationships, of species of Arenicola, 

 156-159 ; of Arenicolidae, 159- 

 162 ; of -B. vincenti with Areni- 

 cola, 155, 156, 159. 



Sageblatter, 35 f.n., 45, 47, 48. 



Savigny, on classification of Annelids, 

 12, 13, 15, 24 ; on Telethusae, 13, 

 26. 



Scalibregmidae, affinities with Areni- 

 colidae, 159, 160, 161, 162. 



Scoleciformia (Benham), 24. 



Seba, 7. 



Sedentaires (Lamarck), Sedentaria, 12, 

 16, 19, 20, 21, 24. 



Segments, number and annulation of, 

 in Arenicola, 36 ; in B. vincenti, 

 149. 



Sense-organs of Arenicola, 66-70. 



