536 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
Iii fig. 80 a view of a longitudinal section of the body at the base of 
the proboscis sheath is given. The most obvious difference between 
these sections and those of adult Echinorhynchi appears to be the ab- 
sence of distinct canals in the subcuticular layer. 
Eciiinorhynchus carcharle. 
[Plate VII, tigs. 81 and 82. Plate vm, figs. 83 and 84.] 
Proboscis with about ten hooks visible on a side in a single trans- 
verse row, following one of the spirals, and about fourteen in longitu- 
dinal series. Hooks rather long, stout, sharp, strongly recurved, with 
bases as long as the spinous part. Neck conical, unarmed, nearly as 
long as proboscis. Sheath about twice as long as proboscis ; lemnisci 
about two-thirds the length of the proboscis. Body linear, tapering 
very gradually from about the middle to the posterior end, and slightly 
tapering near the anterior end. 
This description is based on a single specimen. The Eciiinorhynchus 
was not noticed at the time of collecting, but was found afterwards in a 
vial in which cysts from the walls of the stomach and intestine of a 
sand shark (Carcliarias littoralis) had been placed. 
The proboscis was retracted and partly inverted so that neither the 
number and arrangement of hooks nor the outline of the proboscis fcould 
be made out with certainty. The surface of the specimen in glycerine 
appears crackled or mottled, a feature which is apparently due to the 
subcutaneous, reticulated vascular system. The specimen is a female 
and contains numerous fusiform embyros scattered through the body 
cavity along with several oval, granular bodies (fig. 84). At the pos- 
terior end of the body the uterus persists as ,a narrow oviduct which 
is packed with fusiform embryos (fig. 83). 
The following measurements are taken from the specimen in glycerine 
slightly compressed. 
Measurements. 
Millimetres. 
Length 
22. 00 
Length of neck 
.f-0 
Lengtli'of proboscis 
. 80 
Diameter of proboscis at base 
.30 
Length of longest hooks 
.06 
Length of sheath 
1. 60 
Diameter of sheath __ __ __ 
. 36 
Length of lemniscus 
1.00 
Breadth of lemniscus 
.40 
Diameter of body, anterior end 
LOO 
Diameter of body, posterior end 
1.(0 
Greatest diameter of body 
1.70 
Length of embryos 
.07 
Diameter of embryos 
.02 
Diameters of oval granular bodies 
5 . 09 
\ .06 
Tne specimen may come from the intestinal tract, although, if such 
is the case, I can scarcely see how it could have been overlooked. At 
the time of collecting I have always carefully separated those entozoa 
