658 



FRESH-WATER BIOLOGY 



49 (so) 



Teeth 12-16 pairs; annuli VII a' and VIII a' enlarged, but only 

 slightly subdivided; color variable, usually blotched. 



Haemopis marmoratis (Sai^) 1824, 



Fig. 1006. Haemopis marmoratis. External morphology, 

 showing sensillae, annulation, and limits of somites. 

 c, ditellum; V-XXVII, somites; h, Jj, a^, h, be, the five 

 annuli of somite XV, X li. (Original.) 



Fig. 1007. Haemopis marmoratis. Reproductive organs, 

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

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

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

 common oviduct; os, ovary; js, sperm sac; ii-3, testes; 

 Cfflj vagina; vd, vas deferens: 3" male orifice; ^ female 

 orifice. X 2. (After Moore.) 



50 (49) Teeth 20-25 pairs; aimuli VII a? 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 5a 



52 (53) Upper lip relatively narrow and arched; i orifice XI V/h*, ? 



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

 tral ground color paler than dorsal; dark blotches always 

 present; size very large. . Haemopis grandis (Verrill) 1874. 



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



and XII J'; 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. 



