4c Canadian Arctic Expedition, 1913-18 
“Station 41x, C.A.E. On just dead Cottus scorpius L. Bernard harbour, 
Northwest Territories. End of August, 1915. F. Johansen, coll.” Four 
small ones. 
“Station 42m, C.A.E. On just dead Cottus scorpius L. Bernard harbour, 
Northwest Territories. Dark purple. F. Johansen, coll.’’ Three full grown 
specimens. 
“Station 49g, C.A.E. On skin of dead Cottus scorpius L. Bernard harbour, 
Northwest Territories. June 15,1916. F. Johansen, coll.’ Twelve specimens 
of various sizes. 
Oxytonostoma typica Malm. 
A single specimen having exactly the appearance of Malm’s figure of 
Pontobdella granulifera with which this species is probably identical. 
Length 22-5 mm., maximum width (behind middle) 4 mm. The body is 
strongly fusiform and in the posterior region slightly flattened but strictly 
terete anteriorly. Much enlarged caudad of the middle and tapered to ‘the 
very narrow anterior region which immediately behind the oral disc measures 
only one-tenth of the greatest diameter. Posteriorly it tapers less, the width 
at the anus being about one-fourth of the maximum. Oral sucker small and 
very deeply cupped. No eyes. Caudal sucker neither deeply concave nor 
strongly expanded, being about one-half the maximum diameter. 
Somites in the middle region are strongly marked, as though the body 
cavity were extensively developed and subdivided by disseppiments, as in 
earthworms. Twelve such are very distinct but the constrictions fade out 
toward the caudal end. There is here no trace of annulation. In the slender 
anterior region the somites are less distinct but there is some trace of annulation 
which extends onto the head also. On the ventral surface of the anterior half 
of the posterior region are six pairs of rather conspicuous, low, rounded elevations 
situated just behind the constrictions. In the center of each appears a small 
orifice (nepridiopore?). 
The integument presents a peculiar shiny surface as though covered by a 
thick cuticle like a tapeworm on which no papille, granules or sensille are 
visible. It is of a dirty brownish color, stained dark purple or slaty at the 
slight constrictions. The peculiar appearance is probably due to the stretching 
of the integuments as a result of extreme gorging of the digestive tract with 
blood. 
“Station 41, C.A.E. Bernard harbour, Northwest Territories. 3-5 
fathoms. July 20, 1915 (dark purple). F. Johansen, coll.’’ One specimen. 
Platybdella sp. 
The Victoria \Jemorial Museum at Ottawa also contains a fish leech from 
the Neptune Expedition. It is poorly preserved and cannot be determined 
by me. 
Length 13-5 mm., width at middle 1-4 mm., diameter of caudal sucker 
1-5mm. Noeyes. Caudal sucker prominent, thin and repand. No eye-spots. 
Somite appear to be triannulate with traces of the secondary furrows. 
“From Sclerocrangon boreas (Phipps). Neptune Exp. 1903-04.” 
