EXPLANATION OF PLATES 



PLATE V. 



Fig. r. StuMmannia. 

 Longitudinal section through anterior segments, hr, brain ; n, ventral nerve-cord ; g, gizzard ; 

 ca, calciferous glands ; im, ventral blood-vessel ; dv, dorsal blood-vessel ; s, masses of perivisceral 

 corpuscles. 



Fig. 2. Octoekaetus multiporus. 

 Transverse section through oesophageal region of young worm, dv, dorsal vessel ; vo, ventral 

 vessel ; s, septum ; ca, calciferous gland ; n, nerve-cord. 



Fig. 3. Eudriloides cotterilli. 

 Transverse section, sps, spermathecal sac with appended glands {gl). dv, dorsal vessel ; 

 CO, calciferous glands ; i, oesophagus. 



Fig. 4. StuMmannia. 

 Section through penial process, gl, glandular epithelium of penis ; m, septum dividing its 

 cavity from general coelom ; vd, vas deferens ; n, nerve-cord ; dv, dorsal vessel ; I, intestine ; 

 el, clitellar epithelium ; sps, sperm-sacs ; p, muscular sac opening at end of penis. 



ERRATA 



p. 183. To synonyms oi Aeolosoma he.mprichn add Aeolonais hemprichii and Aeolonais decorum of 



Geevais. 

 p. 184. To synonyms of Aelosoma quaternarium add Aeolonais quatemariwm of Geevais. 

 p. 214. To synonyms of Lumbriculus variegatus add Tuhifex yentilinus, Duoiis (fide Vaillant). 

 p. 229, 1. 14. For Telinatodrilus read Telmatodrilini. 

 p. 251, 1. 24. For bogdunovii read bogdemovii. 

 p. 266, 1. 13. For Sem,itubifex ater read Hemitubifex benedii. 

 p. 275. To list of genera of Naidomorpha add Ripistes. 

 p. 285, 1. 4. For O.josinae read N.josinae. 

 p. 288, 1. 12. For P. elinguis read N. elinguis. 

 p. 313, 1. 15. For vermiculus read vermicularis. 

 p. 332, footnote. For M. fusca read M. semifusca. 

 p. 348, 1. 15. For E. hegemon read F. he.gemon. 



p. 394. A few species (lo) have been accidentally omitted from the list. 

 p. 481. To synonyms of Pletcherodrilus unicus add Cryptodrilus pelewensis, Michaelsen. 

 p. 498, 1. 13. For C. gravidis read C. grandis. 

 p. 530, 1. 18. For A. commwnis read D. communis. 

 p. 552, last line. For A. muUiporus read 0. multiporus. 

 p. 608, 1. 23. For P. elongatus read P.finni. 

 p. 661, 1. 29. For V. papillata read U . papillifer. 



Note.— Formal descriptions of BrachydrUus, Megascolex hallii, and of Perichaeta dubia, have 

 unfortunately slipped out. But the principal facts in the anatomy of these species will be found 

 scattered through the volume, and can be referred to from the Index. 



