122 REPOKT OF THE OoMJiiSSiONEil OF FISH AND FISHERIES. 



Sporocyst (rejected): Synonym for spore. Employed by Pleitler.' 



Sporoplasm : Tlie " posterior mass," " plasmic mass," etc., of the spore. 

 This term is used as the eciuivaleut 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 hiiemal and nervous systems and 

 of an alimentary tract, the proper correlation of these surfaces with 

 the corresponding- ones in extra-myxosporidian organisms seems impos- 

 sible. Inter se, however, the superior surfaces may be correlated by a 

 greater convexity of the superior valve, but probably most frequently 

 by tha further projection forward of the supero-mediafi cornu, which may 

 C?) 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 Kraukheitserregei-; 1891, 2 ed., pp. 7, 8. 



