The genus Cerithidea Swainson, 1840 (Gastropoda: Potamididae) in the Indo-West Pacific region Author Reid, David G. text Zootaxa 2014 3775 1 1 65 journal article 36884 10.11646/zootaxa.3775.1.1 c2c6d40e-39c0-477c-9bc2-8eae0c3dd816 1175-5326 285731 D9FF6080-0316-4433-ABB8-7D6D6F2BF24B

TABLE 1. Comparison of members of the Cerithidea quoyii group: C. quoyii, C. dohrni and C. andamanensis.

	C. quoyii	C. dohrni	C. andamanensis
	Fig. 12B–J	Fig. 12A, Q–CC	Fig. 12K–P
Shape	Relatively broad	Narrow	Narrow
Spire	Convex	Straight to slightly convex	Straight
Whorls	Relatively flat	Rounded	Rounded
Periphery	Sharp keel	Angled	Weakly angled
Axial ribs on penultimate whorl	14–32	17–35	16–22
Axial ribs after ventrolateral varix	3–6, becoming weak on final 0.25 whorl	4–7, strong until just behind aperture	7–10, remaining strong to aperture
Spiral ribs visible on spire whorls	7	7, narrow	5–6, weak between axial ribs
Overall sculpture	Moderately strong axial and spiral ribs	Fine, sharp reticulation	Strong axial ribs with nodules
Distribution (Fig. 11)	SE Asia, Borneo, Java	Philippines, Sulawesi	Andaman Sea