170 



ROTATORIA 



latter niHch less than the anterior breadtli, two posterior spines which are usually unequal, or 

 one asyniinetrically placed spine, or without spines. 



f. c'iilga (Ehrenberg). Posterior spines well developed, rather sliort, unequal, the riyht 

 typically one-third and the left one-fourth of the length of the lorica. Punctate and reticulate 

 sculpture both present. 



f. asx)iiiiictric'a (P)arrois and Daday). Right posterior spine well developed, typically 

 about half as long as the lorica, left spine rudimentary. Punctate and reticulate sculpture 

 both present. Syn. f. heterospiiia Klauscner (1908) p. p. 



lOOy. 



Figure 4. — Kcralclla ralga (Ehrenberg), dorsal aspect of lorica of A, f. aspina (Fadecv) Weltevreden 

 West, Tvl. S. Africa; B, f. valga, Sohawa, P2; C, f. tropica (.-Xpstein) Ootacamund, NS; D, f. iropica- 

 asymmctrica Apstein-Barrois and Daday, Wular Lake, K43; E, f. tropica-iiwiistrosa Apstein-Barrois and Daday, 

 Wular Lake, K43. 



f. monstrosa (Barrois and Daday). Right posterior spine well developed, typically alxjut 

 half as long as the lorica, left spine absent. Reticulate and punctate sculpture well developed. 

 Syn. ? var. duinasi Richard (no figure or indication if this is really a form of valga) 

 var. asymmetrica Daday nee. Barrois and Daday 

 f. nionospina Klausener (1908) 

 i.monospUia Fadeev {\927 )^ tropica-motistrosa 



i. longieornis (Schtnarda). Both posterior spines well developed and practically equal, 

 typically about three-fifths as long as the lorica, reticulate and punctate sculpture both well 

 developed, as indicated in Schmarda's typical figure, or the latter reduced (Hartmann, 1918, 

 Figure 76). 



f. tropica Apstcin. Rigiit spine very long, typically about si.x-sevenths of the lengtli of 

 the lorica, left spine much shorter but well developed, about two-fifths as long as the 

 lorica. Reticulate sculpture developed, punctate often reduced. 



f. reducta Fadeev. Right posterior spine alone developed, short, about one-fourth of tlie 

 length of the lorica (typical figure may be taken as Fadeev, 1927, T. 2, fig. 12), punctate 

 sculpture absent, reticulate very reduced. 



