Diniatys Iredale, 1936

Too, Chin Chin, Carlson, Clay, Hoff, Patty Jo & Malaquias, Manuel António E., 2014, Diversity and systematics of Haminoeidae gastropods (Heterobranchia: Cephalaspidea) in the tropical West Pacific Ocean: new data on the genera Aliculastrum, Atys, Diniatys and Liloa, Zootaxa 3794 (3), pp. 355-392 : 377

Genus Diniatys Iredale, 1936

Type species: Bulla dentifera Adams, 1850

This genus was originally named Dinia by H. and A. Adams (1854) as a subgenus of Atys . It has been placed as a subgenus of Cylichna in Scaphandridae ( Thiele 1931; Maes 1967), or as a genus of Scaphandridae ( Pilsbry 1921) and Haminoeidae ( Habe 1952; Burn 1978). Since Dinia was preoccupied by a group of lepidopteran insects ( Walker 1854), Iredale (1936) introduced the new generic name Diniatys with the type species Diniatys dentifer , which was originally described as Bulla dentifera ( Adams 1850) .

The traditional diagnostic character of the genus is the tooth-like projection at the end of columella. Shells are usually ovoid and broad with fine spiral grooves and without umbilicus ( Burn 1978). Three species were described in the Indo-West Pacific: D. dentifer ( Adams, 1850) , D. monodonta ( Adams, 1850) and D. truncatula ( Schepman, 1913) ( Burn 1978; Carlson & Hoff 2003; Qi 2004; Gosliner et al. 2008). According to Schepman (1913), D. truncatula was found at a depth of 522 m in the Sulu Sea off the Philippines (see Tab. 3 for diagnostic characters of species described here).