172 



FRANK E. BEDDAED. 



Setae 



Epidermic 

 glands be- 

 tween setae 

 Prostomium , 

 Clitellum . , 

 ^ pore . . 

 Atria . . . , 

 Testes . . , 

 Vasa defer en- 

 tia funnels 

 Sperm-sacs 



Spermatliecse 



Nephridia 



Uroch^ta. 



Posterior 

 glands con- 

 nected with 

 nephridia 



Alimentary 

 tract 



Irregular in distri- 

 bution after Seg- 

 ment x ; /-shaped, 

 with bifid extre- 

 mity. Some of cli- 

 tellar setae orna- 

 mented with ridges 



Present 



Absent 



XV (XVl) — XXII 



xix/xx 

 Absent 



One pair in xi 

 One pair in xi 



One elongated pair 

 extending from XII 



to XIV 



Simple sacs without 

 diverticula in vii, 

 VIII, IX (opening 

 at anterior border 

 of segment) 



Anterior pair form- 

 ing a branched 

 " mucous gland " 

 opening on Seg- 

 ment II. First 

 pair of ordinary 

 nephridia in Seg- 

 ment IV. External 

 opening surround- 

 ed by a " sphinc- 

 ter" 



Present 



Three pairs of cal- 

 ciferous glands 



DlACH^TA 



Thomasii. 



Irregular in distri- 

 bution from the 

 first. /-shaped, 

 with pointed ex- 

 tremity. Clitellar 

 setae not different? 



D1ACH.ETA 



WiNDLEI. 



A.bsent 



Absent 



XX — XXXIII 

 XXII 



Absent 



One pair in xi ? 



One pair in xi 



One elongated pair 

 extending from xii 

 to XXXVIII 



Simple sacs without 

 diverticula in vi, 

 VII, VIII (opening 

 at posterior border 

 of segment) 



Anterior pair form- 

 ing a " mu- 

 cous gland," not 

 branched, opening 

 on Segment iii 

 Ordinary nephri- 

 dia commence in 

 Segment iv. No 

 sphincter. 



Absent 



No calciferous 

 glands 



First five segments 

 without setffi, irre- 

 gular in distribution 

 on remaining seg- 

 ments. Setae highly 

 specialised, there 

 being three forms : 



(1) simple/-shaped, 



(2) ornamented setae 

 as in Urochaeta, 



(3) large hooked 

 setae. 



Absent. 



Absent. 



XV—? 



? 

 Absent. 



Two pairs in x, xi. 

 Two pairs in x, xi. 



Two pairs (small) in 



XI, XII. 



Simple sacs without 

 diverticula in vii, 

 VIII, IX (opening at 

 posterior border of 

 Segments vi, vii, 



VIIl). 



Anterior pair form- 

 ing a " mucous 

 gland," not branch- 

 ed, opening on Seg- 

 ment IV. Ordinary 

 nephridiacommence 

 in following seg 

 nient. Orifices 



guarded by a sphinc 

 ter. 



Absent. 



No. 

 but 



calc 



ilciferous gland, 

 ^.<^ a portion of in- 

 testiue(in Segments 

 '"• -xrv) with 

 structure. 



XII 



si 



imilar 



