NO. 1912. 



.4 TfEW DISCODRILW WORM-ELU^ 485 



rcorsal and ventral dental plates dissimilar; anterior uephridia opening through a 



common mid -dorsal pore in the center of a small papilla. k „f tho 



c' Tpermatheca bifid; dental plates colorles^s; without sensory hairs about the 



■ 'Ztroralsens;ry papilla wanting; nine post-cephalic segments each with 



a conspicuous pair^of large clear glands opening to ^^^;^;^^y ^^ 



ventrally; penis eversible ^ uiuminatus (Moore). 



c^ Spermatheca not bifid; dental plates colored; sensory hairs about the mouth; 



"^ral sensory papilte present; no large clear glands in the nine P'-t-cephalic 



segments; penis not eversible, but bursa eversible. -Cambartnco/.,, new 



di Head as wide, usually wider than the greatest width of the body, campanu- 



■ late- lip single, circumoral and slightly crenate; mtestme rather straigh, 

 dorsal dental plate with 3 small teeth on each side, apical tooth conical; 

 ventral dental plate with 4 small teeth on each side; base of both even 



C. philadelphica (Leidy). 



cP Head elongate, width always less than the greatest width of the body, taper- 



■ ing in the anterior half; lips2; intestine much convoluted m the last three 

 segments through which it passes; dental plates each with lateral horns; 

 dorsiil dental plate with 2 promment teeth on each side, apica tooth cylm- 

 drical and pointed; ventral dental plate with a single pair o knob-shaped 

 teeth one on each side, the two apical teeth large, cylindrical and pomted ; 

 Dhar^^x with a distmct dorsal and a distinct ventral diverticulum. 



*^ •' C. macrodonta, new species. 



BIBLIOGRAPHY. 



1 Branchiobdella Odier, 1823. 



1. Branchiobdella pulchenima Moore. e • -di,-. i 4=^ isq^ 



Branchiobdella pukherrima Moore, Proc. Acad. Nat. Sci PhUa., vol. 45, 1893 

 p. 423, pi. 12, fig. 2 a, b, c, e (Watauga Co., North Carolina, on Cambarua 



hoTtOJl'l'l) 



Branchiobdella pulcherrima Smallwood, Biol. Bull., vol. 11, No^2, 1906 pp. 

 100 and 106, fig. 2 (Lake Clear, Harriettstown, Franklm Co., New York). 



2. Branchiobdella instabilia Moore. c, • -du-i i ^r; iftoq 



Branchiobdella insUibilia Moore, Proc. Acad. Nat. Sci. Phila., vo.. 45, 1893, 

 p.. 425, pi. 12, fig. 3 a, b, c, e (Watauga Co., North Carolma; Delaware Co., 



B^aMdella instabilia Smallwood, Biol. Bull., vol. 11 No^2, 1906, pp. 100 

 and 104, fig. 1, (Lake Clear, Harriettstown, Franklm Co., New ^ork). 

 3 Branchiobdella tetrodonta Viemntoni. 



Branchiobdella tetrodonta Pierantoni, Napoli Annuario Mus. I niv., vol. 2, 

 No. 4, 1906, (California on Astacxis, sp.). 

 2 Bdellodkilus Moore, 1895. „,,,,., •.> • . 



Moore, Journ. Morph., vol. 10, 1895, p. 497. Type. Bdellodr^lus ^llurmnalus 

 (Moore) = Branchiobdella illuminata Moore. 

 4. Bdellodrilus Uiuminatus (Moore). o • -dum ^ a<^ laa-i 



Branchiobdella illuminata Moore, Proc. Acad. Nat. Sci. Phila.. vol. 45. 1893, 

 p. 421, pi. 12, fig. 1 a, b, e, (Philadelphia, Pennsylvania; \\atauga (o.. 

 North Carolina; from Cambarus bartonii). 

 Bdellodrilus Uiuminatus. Moore, Journ. Morph., vol. 10. 1895, p. 497 «t seq., 



BdMHlus Uiuminatus Smallwood, Biol. Bull., vol. 11. No. 2, 1906, p. 100 

 (Uke Clear. Harriettstown, Franklin Co., New York). 



