Table 5.

Diagnostic comparisons of morphological characters of five sinistral Camaena from China.

Character	Camaena cicatricosa	Camaena obtecta	Camaena inflata	Camaena connectens	Camaena poyuensis sp. n.
SW (mm)	33.8–48.7	53.2–61.9	38.4–56.7	48.2–55.3	52.5–58.7
Umbilicus	half covered	completely covered	almost covered	almost covered	completely covered
Shell shape	depressed-globose	depressed-globose	globose	depressed-globose	depressed-globose
Shell thickness	thin	thick	thick	thick	thin
Basal lip	curved	straight	curved	curved	straight
Hump beside umbilicus	absent	humped	humped	humped	absent
Pilaster on inner penial wall	longitudinal, narrowly-spaced	transverse, narrowly-spaced	proximal: transverse, narrowly-spaced distal: longitudinal, narrowly-spaced	proximal: transverse, widely-spaced wrinkles distal: longitudinal, widely-spaced	proximal: transverse, narrowly-spaced distal: longitudinal, widely-spaced
Verge	long conic	conic	bluntly long conic	bluntly conic	short conic
Verge surface	longitudinal, dense, weak wrinkles	irregularly curly, weak wrinkles	Proximal: transverse, deep wrinkles distal: longitudinal, dense, shallow wrinkles	longitudinal, dense, deep grooves	longitudinal, deep grooves