Plate 11. 



Fig. ]. I.iificmi sulcata. XIOO. After Balkwill and Wright, 

 li. I.agena sulcata, var. ai>icuJata. X50. D2144. 

 .'). Lagena trigoiio-iiiari/iiiata. XIOO. After H. B. Brady. 

 4. Lagena trigono-iiiarginata. XIOO. a. front view; h. aiiertiiral 



view. After H. B. Brady. 

 T). Lagena truncata. X75. After H. B. Brady. 



6. Ljtgena trnncata. XTo. a. front view; h. aiieiTnral view. After 



H. B. Brady. 



7. Lagena ungiiix. X'i'20. a and 1). opiios'te sides; c side view. After 



Heron-Allen and Earland. 



8. Ljtgena iriUi(nns<,iii. XIOO. " Bilocular." After Balkwill and 



Wright. 

 D. Laf/oia ?r////r/»/.so»/. XIOO. a. front view; h. apertnral view. After 

 ISalkwill and Wright. 



ISO 



