xii EXPLANATION OF PLATES 



PLATE V. 



Fig. i. Stuhlmannia. 



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

 ea, calciferous glands ; w, ventral blood-vessel ; dv, dorsal blood-vessel ; s, masses of perivisceral 

 corpuscles. 



Fig. 2. Octochaetus multiporus. 



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

 vessel ; , septum ; ca, calciferous gland ; TO, nerve-cord. 



Fig. 3. Eudriloides cotterilli. 



Transverse section, sps, gpennathecal sac with appended glands (gl). dv, dorsal vessel ; 

 ca, calciferous glands ; i, oesophagus. 



Fig. 4. Stuhlmannia. 



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

 cavity from general coelom ; vd, vas deferens ; n, nerve-cord ; dv, dorsal vessel ; 7, intestine ; 

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



ERRATA 



p. 183. To synonyms of Aeolonoma Itemprichn add Aeolortais hemprichii and Aeolonais decorum of 



GERVAJS. 



p. 184. To synonyms of Aelosoma quaternarium add Aeolonais quiiternarium of GEHVAIS. 

 p. 214. To synonyms of Lumbriculus variegatus add Tubifex yentilinus, DUGES (fide VAILLANT). 

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

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

 p. 266, 1. 13. For.Hemitubifex 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. dinguis read N. elinguis. 

 ]>. 313, 1. 15. For vermicvlus read vermicularis. 

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

 p. 348, 1. !<;. For E. hegemon read F. hegemon. 



p. 394. A few species (10) have been accidentally omitted from the list, 

 p. 481. To synonyms of Fletrlierodrilus unicug add Cryptodrilus pdewensis, MICHAELSEN. 

 p. 498, 1. 1 3. For C. gravidis read C. grandis. 

 p. 530, 1. 1 8. For A. eommunis read D. communis. 

 p. 552, last line. For A. multi^orus read 0. multiporus. 

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

 p. 66 1, 1. 29. For U. pairillata read U. papillifer. 



NOTB. Formal descriptions of Brachydrilus, Megascolex hallii, aud 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. 



