THE MYXOSPORIDIA OF THE BEAUFORT REGION. 2T9 



Proposed classification of the Myxosporidia : 



^ Order MYXOSPORIDIA Butschli. 



~> Suborder I. MYXOSPOREA. New suborder. 



Spores not compressed parallel to the transverse plane ; no iodinophilous vacuole in tlie sporoplasm . 

 Trophozoites with few exceptions living free in the gall or urinary bladders. Monosporous, disporous, 

 and polysporous. 



Family 1. CERATOMYXID^ Doflein. 



Spores longer than wide; valves rounded or pointed at the ends. Trophozoites usually pyrifomk. 

 Commonly disporous. 



Genus I. Leptotheca Thelohan. 



Valves of spore short and rounded. Sutiu'al plane usually slightly oblique to longitudinal axis. 

 Sporoplasm filling most of both valves. (See fig. 4, A and B.) 



Genus 2. Ceratomyxa Thelohan. 



Valves of spores produced into long, conical, or flattened processes, with roimded or pointed ends. 

 Sutural plane usually perpendicular to transverse axis. Sporoplasm usually unsymmetrically located, 

 extending only a short distance into one valve. (See fig. 3.) 



Family 2. SPH.«ROSPORID^. New family. 



Spores p)rramidal or approximately spherical; not distinctly longer than wide; with or without 

 lateral processes. 



Genus i. Myxoproteus Doflein. 



Spores roughly pyramidal; witli or without distinct processes from the base of the pyramid. 

 Disporous. 



Genus 2. Sphffirospora Thelohan. 



Spores spherical; without processes of any kind. Capsules distinctly pyriform; convergent when 

 viewed from above (i. e., at right angles to the longitudinal plane). Sutural line forming a straight 

 ridge around spore. (See fig. 4, C and £>.) Disporous and polysporous. 



Genus 3. Sinuolinea, new genus. 



Spores approximately spherical; with or without lateral processes. Capsules rounded, not conver- 

 gent when seen from above; capsular pores some distance apart, sometimes on nearly opposite sides of 

 the spore. Sutural line forming a prominent ridge, which takes a sinuous course around the spore. 

 Sutural plane usually distinctly twisted on its axis. (See fig. 5, A and B.) Disporous and polysporous. 



Family 3. MYXIDHDiE Thelohan. 



Spores distinctly elongated along longitudinal axis. Capsules at or near ends of spore and opening 

 in opposite directions. Suttu'al plane more or less twisted on its axis. 



Genus i. Myxidium Butschli. 



Spores more or less fusiform, pointed or rounded at ends, not truncated. Capsules mayor may not 

 open at ends of spore. (See fig. 5, C and D.) Monosporous, disporous, and polysporous. 



Genus 2. Sphseromyxa Thelohan. 



Spores fusiform, with tnmcated ends. Capsules opening at ends of spore. Filaments short and thick, 

 coiled parallel to the longitudinal axis. (See fig. 6, A and B.) Trophozoites flattened and leaflike. 

 Polysporous. 



Genus 3. Zschokkella Auerbach. 



Spores, when viewed from above, semicircular; pointed at ends. Capsules spherical; situated at 

 ends of spore, but opening on the flattened surface. 



