
92 RECORDS OF THE S.A. MUSEUM 
Carapace with dorsal edge only slightly arched, two-sevenths of total length 
of animal, and twice as long as deep; moderately compressed, its width equal to 
depth; there is a thin, median longitudinal carina for anterior half of length, 
flanked on each side by a distinct depression, the posterior termination of which is 
marked by a slight but evident. emargination of the dorsal edge as seen from the 
side; posterior to this the carina is much less distinct (really a narrow, depressed 
area with a somewhat bifurcate appearance) ; there is a faint depression on each 

Fig. 19. Cyclaspis cretata, type male; A, lateral view; B, carapace from above; C and D, 
upper and side views of frontal portion of carapace. Allotype female; E, lateral view; F, carapace 
and anterior pedigerous somites from above; G, anterior portion of carapace (A, B, E and F, 
X 20; C, D and G, X 40). 
