
THE AMERICAN NATURALIST. [VoL. XXXVI. 
A, Genital pore on edge of body. 
Genital pore on right edge of body opposite 
pharynx; suckers very large; testes in same 
transverse plane in front of acetabulum: in birds 
Stromylotrema Lss. (Fig. 66) (44. 45) 
i, Genital pore on left edge of body opposite acetab- 
ulum ; but one testis present: in fish 
Asymphylodora Lss. (Fig. 67) (44) 
J» Intestinal coeca very short, extending but little, if any, beyond 
the acetabulum, and often not to it; excretory vesicle usually 
wide, long, and V- or Y-shaped ; testes usually in same trans- 
verse plane. 
£y. Intestinal coeca reach about to acetabulum or a little beyond, 
and are S longer than the cesophagus ; yolk glands 
small soa . . Subfamily XIX. Pleurogenetinæ 
h,. Genital pore at left side of body near forward end; 
cirrus sac large. 
i, Testes small, lobate, just behind yolk glands and 
ovary, all being behind acetabulum: in fish 
Lepidophyllum Odh. (Fig. 106) (79) 
i, Yolk glands and ovary in front of testes: in amphi- 
bians and reptiles. 
jı- Testes one on each side of acetabulum ; cesoph- 
agus long; body elliptic 
Pleurogenes Lss. (Fig. 68) (43. 44) 
Jo. Testes far in front of acetabulum and ovary; 
body oval or round; cesophagus short 
Prosotocus Lss. (Fig. 69) (44) 
Ža Genital pore in or very near acetabulum 
i,. Genital pore in anterior border T acetabulum ; 
excretory vesicle Y-shaped and very long 
Gymnophallus Odhner (Fig. p" (69) 
i, Genital pore not in acetabulum 
Jj. Genital pore at left side at acetabulum ; yolk 
glands behind testes 
Levinsenella S. et H. (Fig. 71) (44 15) 
Ja Genital pore in front of acetabulum ; yolk glan 
in front of testes: in Corone 
Ochetosoma Brn. (9) 
£y Intestinal ceca very short, usually falling short of acetabu- 
lum; ovary usually near acetabulum; Ld glands small ; 
testes usually in same transverse plan 
Subfamily XVH: Brachycoeliinz 
Ay. Body shi ca and spiny. .— 
a. 

