536 
HENRY LESLIE OSBORN 
LuEHE,M. 1900 tiberdieGattungPodocotjde. Zool. Anz., Bd. 23, pp. 487-492. 
Odhner, Th. 1900 Gymnophallus, eine neue Gattung von Vogeldistomen. 
Centr. f. Bakt. u. Parasitenkunde, Bd. 27, pp. 12-23. 
1905 Die Trematoden des arctischen Gebietes. Fauna Arctica. 
Romer u. Schaudinn, Hft. 4, pp. 292-372. 
OsBORN, H. L. 1902 Bunodera cornutiim sp. nov. : A new parasite from the 
crayfish and certain fishes of Lake Chautauqua, New York. Bio- 
logical Bulletin, vol. 5, pp. 63-73. 
1903 Cryptogonimus (n.g. chili (n. sp.) A fluke with two ventral 
suckers. Zool. Anzeiger, vol. 26, pp. 695-696. 
1904 On the habits and structure of Cotj'laspis insignis. Zool. 
Jhrb. Anat. Bd. 21. 
Otto. R. 1896 Beitrage zur Anatomie und Histologic der Amphistomen. Deu- 
tsche Zeit. f. Thiermedicin u. vergl. Pathol. ,vol. 22. 
Stafford, J. 1905 Trematodes from Canadian vertebrates. Zool. Anzeig 
Bd. 27. 
Ward, H. B. 1894 On the parasites of the lake fish. I. Notes on the structure 
and life history of Distomum opacum n. sp. Proc. Am. Mic. Soc, 
vol. 15, pp. 173-182. 
1901 On the structure of the copulatory organs in Microphallus 
nov. gen. Univ. Nebraska Zool. Studies, No. 43, pp. 175-187. 
ABBREVIATIONS 
at, atrium or meeting place of the male 
and female ducts. 
cy, cyst wall. 
dej, ejaculatory duv.t. 
exa, anterior excretory cavity. 
exp, posterior exc. cavity. 
int, intestine. 
Ic, canal of Laurer. 
mi, sphincter muscles 
nv, nerve collar. 
oc, eye. 
od, oviduct. 
oe, oesophagus. 
OS, oral sucker. 
ov, ovary. 
pph, prepharynx. 
ph, pharynx. 
pr, prostate gland cells. 
svs, seminal vesicle. 
sh, edge of sheath of ventral suckers. 
shg, shell gland. 
spl, left spermary. 
spr, right spermary. 
uta, ascending uterus. 
utd, descending uterus. 
vsp, posterior ventral sucker. 
vt, vitellaria. 
vtd, yolk duct. 
vtr, yolk receptacle. 
All drawings unless other^\'ise stated are from outline camera lucida drawings, 
the Zeiss-Abbe camera being used in all cases. 
The scale drawn on many of the figures is a camera view of the lines of a 
stage micrometer of the same magnification as the object, it is either 0.1 mm. 
for low power or 0.01 mm. for high power views. 
