Plate 36 



Figs. 1, 2. Sigmomorphina trinitatensis Cushnian and Ozawa. X 35. Hermi- 

 tage quarry, Dumfries Road, Trinidad. 



3. Sigmomorphina bornemanni Cushman and Ozawa. X 35. Middle 



Oligocene, Hermsdorf, near Berlin, Germany, a, side view; b, basal 

 view. 



4. Sigmomorphina gallowayi Cushman and Ozawa. X 45. Albatross 



D4807, off Japan, a, side view; b, basal view. 



5. Sigmomorphina trilocularis (Bagg). X 45. Albatross D4807, off 



Japan. 



6. Sigmomorphina yokoyamai Cushman and Ozawa. X 45. Upper 



Pliocene, Island of Sado, Japan, a, side view; b, basal view. 



181 



