APPENDIX A 



167 



— Eyes absent. Dina ahsoloni (Johansson 1913) 



58. Gonopores separated by 4^10 annuli depending on 

 the degree of subdivision of the annuli. 



Trocheta suhviridis Dutrochet 1817 



— Gonopores separated by 2-4 annuli. 



Trocheta bykowskii Gedroyc 1913 



59. Vas deferens with a pre-atrial loop reaching to ganglion 



XI (Fig. 21) 61 



Fig. 21 



Fig. 22 



Fig. 21 and 22. Dissection of reproductive systems in region 



of genital pores, ventral view; 21, Trocheta; 22, Mooreobdella, 



after Moore, g.a., genital atrium; g. XII, twelfth ganglion; 



O.S., ovarian sac; p.l. preatrial loop of male duct. 



— Vas deferens without preatrial loop (Fig. 22); every 

 fifth annulus subdivided as in 56 above. 



Mooreobdella Pawlowski 1955 60 



60. Atrium ellipsoidal, wider than long, with horns shorter 

 than diameter of median atrium; 3 annuli between 

 gonopores Mooreobdella microstoma (Moore 1901) 



— Atrium globular with prominent horns longer than its 

 diameter; gonopores separated by 2 annuli and nor- 

 mally on the rings, not in the furrows; eyes 4 (or 3) 

 pairs; length 5 cm. 



Mooreobdella fervida (Verrill 1874) 



— Atrium globular as above; gonopores separated by 



2 annuli and lying in the furrows ; eyes, 3 pairs ; length 



3 cm. Mooreobdella bucera (Moore 1947) 



