. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . Figure 19 Morrowites mocamedensis (Howarth). x Ventral and lateral views of SAM-PC A1885. a homed adult. slightly toward the relatively broad, flattened venter. Costally the whorl section ispolygonal slightly higher than wide, with a weakly concave venter; intercostally it isbroadly ovate and compressed (H/W = ) (Fig. 20A, E), becoming more inflatedwith growth. Part of the poorly preserved suture is illustrated as Figure 30. Ornament, especially the strength of tuberculation and ribbing, is variable.

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. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . Figure 19 Morrowites mocamedensis (Howarth). x Ventral and lateral views of SAM-PC A1885. a homed adult. slightly toward the relatively broad, flattened venter. Costally the whorl section ispolygonal slightly higher than wide, with a weakly concave venter; intercostally it isbroadly ovate and compressed (H/W = ) (Fig. 20A, E), becoming more inflatedwith growth. Part of the poorly preserved suture is illustrated as Figure 30. Ornament, especially the strength of tuberculation and ribbing, is variable. There areabout 13 umbilical bullae per whorl on the best preserved specimen, but their strengthvaries and not all ribs develop bullae. Not uncommonly there is a weak arcuate bullabetween main bullae, unconnected to a rib. The main umbilical bullae give rise to fairlythick low ribs. These are adorally convex across the flank, weak at midflank, andseparated by up to three intercalatories. Main ribs are ornamented with inner and outerventrolateral tubercles, although the latte

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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory