PLATE 40 
All figures approximately natural size 
Fig. 1. Thais lamellosa (Gmelin). Altitude 44 mm. Station 
D 5781. Tabulated and rough. 
Fig. 2. Thais lamellosa (Gmelin). Altitude 45 mm. Station D. 
Cream-white and rough. : 
Fig. 3. Thais lamellosa (Gmelin). Altitude 44 mm. Banded 
and rough. 
Fig. 4. Thais lamellosa (Gmelin). Altitude 41mm. White and 
smooth. 
Fig. 5a. Thais lamellosa (Gmelin). Altitude 52 mm. Station 
D 5801. White and smooth. 
Fig. 5b. Thais lamellosa (Gmelin). 
Fig. 6. Thais lamellosa (Gmelin). Altitude 38 mm. Red rock. 
Tabulated and smooth. 
Fig. 7. Thais lamellosa (Gmelin). Altitude 37.5 mm. Station 
D 5796. Banded and smooth. 
Fig. 8. Thais lamellosa (Gmelin). Altitude 38 mm. Station 
D 5796. Banded, smooth, high spire. 
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