PLATE 40 
All figures approximately natural size 
Fig. 1. Thais lamellosa (Gmelin). Altitude 44 mm. Station 
D5781. 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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