122 REPORT OF THE COMMISSIONER OF FISH AND FISHERIES. 
Sporocyst (rejected): Synonym for spore. Employed by Pfeitter.' 
Sporoplasm: The ‘posterior mass,” ‘“‘plasmic mass,” etc., of the spore. 
This term is used as the equivalent of the phrase “ protoplasm of the 
spore.” 
Surface, inferior: That upon which the inferior valve (q. v.) and the 
infero-median cornu are situated (see also next). 
Surface, superior: That upon which the superior valve (q. v.) and the 
supero-median cornu are situated. 
These are, respectively, the equivalent of dorsal and ventral, or of 
ventral and dorsal. In the absence of hzmal and nervous systems and 
of an alimentary tract, the proper correlation of these surfaces with 
the corresponding ones in extra-nyxosporidian organisms seems impos- 
sible. Jnter se, however, the superior surfaces may be correlated by a 
greater convexity of the superior valve, but probably most frequently . 
by the further projection forward of the supero-median cornu, which may 
(2) even reach the extreme anterior end of the shell cavity. | 
Valve: Each shell half. 
Valve, inferior: The less convex valve; see also next. 
Valve, superior: The more convex valve. The differentiation is prob- 
ably possible in only a few cases. The supero-median cornu will 
probably form a better guide to the discrimination of the superior and 
inferior surfaces. 
View, longitudinal, transverse, or vertical; view along the line of 
the corresponding diameter (q. v.). 
1 Die Protozoen als Krankheitserreger, 1891, 2 ed., pp. 7, 8. 
