658 



FRESH-WATER BIOLOGY 



49 (50) 



Teeth 12-16 pairs; annul! VII a 3 and VIII a! enlarged, but only 

 slightly subdivided; color variable, usually blotched. 



Haemopis marmoratis (Say) 1824. 



XXIII 



FIG. 1006. Haemopis marmoratis. External morphology, 

 showing sensillae, annulation, and limits of somites. 

 c, clitellum; V-XXVII, somites; 6 ? , b 2 , a^, fe, 6e, the five 

 annul! of somite XV. X ii. (Original.) 



FIG. 1007. Haemopis marmoratis. Reproductive organs, 

 dissected, at, atrium or penis sheath; de, ductus ejacula- 

 torius; ep, epididymis; gXI-XVI, ganglia XI-XVI; 

 ga, albumin gland; gp, prostate gland ; os, ovisac; ode, 

 common oviduct; ov, ovary; 55, sperm sac; /i-3, testes; 

 va, vagina; vd, vas deferens; $ male orifice; 9 female 

 orifice. X 2. (After Moore.) 



50 (49) Teeth 20-25 pairs; annuli VII a 3 and VIII a', completely subdivided; 



color gray or plumbeus with no or few spots, usually a 

 median black and marginal orange stripes; size very large. 

 An aquatic and a terrestrial variety. 



Haemopis lateralis (Say) 1824. 



51 (48) Jaws absent or rudimentary; no teeth 52 



52 (S3) Upper lip relatively narrow and arched; $ orifice XI b*/b', 9 



XII b*/b 6 ; protruded penis very slender and straight; ven- 

 tral ground color paler than dorsal; dark blotches always 

 present; size very large. . Haemopi* grandis (Verrill) 1874. 



53 (52) Lip relatively broad and flat; genital pores near middle of XI 6 6 



and XII 6 6 ; protruded penis very long, rather thick and 

 twisted; ground color nearly uniform; dark blotches fre- 

 quently absent or few; size moderate. 



Haemopis plumbeus Moore 1912. 



