NEW GENEKA AND SPECIES OF EARTHWOEMS. 277 



EXPLANATION OF PLATES XXV & XXVI, 



Illustrating Mr. Frank E. Beddard's paper on "Two New 

 Genera and some New Species of Earthworms." 



Figs. 1—6. — Trichochseta hesperidum. 

 Fig. 1. Diagrammatic longitudinal section through proboscis and anterior 



segments. Neph, First nephridium. Or. Its orifice. 

 Fig. 2. Seta. «. The whole seta. b. Tip of seta, more highly magnified. 

 Fig. 3. Part of sperm-sac. 

 Fig. 4. Anterior segments, twice the natural size. 

 Fig. 5. Speri]fiatotheca. 

 Fig. 6. A portion of sperm-sac, highly magnified. 



Figs. 7 — 12, — Polytoreutus magilensis. 



Fig. 7. Portion of female reproductive apparatus. B. o. Receptaculum 

 ovorum. 0. d. Oviduct. E. s. Egg-sac. a. Tube leading to sp., 

 spermatothecal sac. 



Fig. 8. Reproductive organs, v. d. Dilated extremity of vas deferens. 

 Sp. s. Sperm-sacs. e. Extremity of same, b, c. Spermatothecal 

 apparatus, a. Atrium. 0. d. Oviduct. Ca. Calciferous gland. 



Fig. 9. Spermatothecal apparatus, more highly magnified. B. o. Recep- 

 taculum ovorum. $ . Female pore. B. Bursa copulatrix. Other 

 letters as in Fig. 8. 



Fig. 10. Genital segments from below. Od. Oviducal pores : (^, male 

 pore ; ? , spermatothecal pore. 



Fig. 11. A spermatophore. 



Fig. 12. Section through a portion of the spermatotheca. m. Muscular 

 walls, ep. Lining epithelium, s. Spermatophores cut in every plane. 



Figs. 13 — 16. — Pygmseodrilus lacuum. 



Fig. 13. The worm, natural size after preservation. 

 Fig. 14. Prostomium and anterior segments, lateral view. 

 Fig. 15. Prostomium and anterior segments from above. 

 Fig. 16. — Spermatotheca. a. lining epithelium. 



Figs. 17— 22.— Siphonogaster Millsoni. 

 Fig. 17. Head end of the worm, natural size from below, p. Penial 



Fig. 18. One of the penes more highly magnified ; the three principal 

 blood-vessels are indicated, s. Seta. Sv. Sucker. 

 VOL. XXXIV. PART III. NEW SEE. T 



