45 
According to Looss, S. pmtu bears thirty-six head spines, rather 
thick and strong, in two rows, and the body is covered with spines. 
My specimen was too far gone to show any spines. I think, how- 
ever, that there cannot be much doubt that it is S. pristis The 
already known hosts for this species are Gadus euxinus, G. minutus, 
and Motella vulgaris. The Cod, Gadus morrhua, is, therefore, a new 
host for it. 
The life history is not known. 
Looss examined Stossich's specimen of S. pristi,, but does 
not mention that Stossich's* figure shows the worm to have 
rhombic spines, and Stossich's description of the worm also 
mentions this fact. The figure given by Looss shows the spines 
to be of the ordinary shape and thickness. I have found in the 
\V luting, in the pyloric cteca, one specimen of another species of 
Stephanochasmus apparently undescribed, which has its head sur- 
rounded by two rows of very broad, flat rhombic spines, very like 
hose m Stossich's drawing. I think, therefore, that it is very 
Ukely that two or three worms very closely allied were mixed 
together in Stossich's material (Looss has already found 8. caducus 
with S. pnstis), and that Stossich's figure and perhaps the descrip- 
tion represented this other form to which I give the name of 
otrplumocliasmus rhombisjiiywsm. 
BHphanockmm rhombhpinosm, a. sp . (Plate II., figs 9_io ) 
u i very different from Loess's figure as remarked above, and it also 
differs ,n other ways, so that, I think, this certainly repreeZ 
a separate species. It occurred once only in the pyloric ^c" 
of the Whiting (December). It is a long, narrow worn, colourless 
and transparent, 5-10 mm. long, and about 0-30 mm. broad' 
tapering anteriorly. The body ia covered with spines to til' 
CfiTbtT r\ a ' ld ^ heaJ iS " roW<k " -ith't'rltf 
ZL oh £ • 7^ SPmeS ' SU ° h M are sho ™ in Stossich's 
figure of S. pruu, The exact number could not be determined but 
« e e appeared to be either thirtysix or thirty-eight. The oral and 
enw suckers are of eoual size, 0-16 mm. across. The prepha ■ v 
■SO 0 mm long; pharynx 010 mm. long, 0-08 mm. broad 
«^ha g „s short and broad, reaching to the" posterior Z of t 
^^ThejrenM sucker is just behind the intestinal fork. 
w.vmTS'a' " Cn "" aww in- a* em to. ttu*.rL,ms. 
