Connexochiton, Kaas, 1979

Sirenko, Boris, 2021, Composition of the genus Connexochiton Kaas, 1979 (Mollusca: Polyplacophora Ischnochitonidae), Zootaxa 4950 (1), pp. 83-102 : 100

Identification key for the species of the genus Connexochiton

1(2). Head valve with nine radial ribs, postmucronal area of tail valve flattened........................... C. costatus n. sp.

2(1). Head valve without radial ribs, postmucronal area of tail valve convex

3(4). Dorsal scales with large and small spherules only............................................ C. solomonicus n. sp.

4(7). Dorsal scales with spherules and ribs

5(6). Dorsal scales with a distal row of 5–6 large spherules and 9–10 longitudinal ribs below.................. C. platynomenus

6(5). Dorsal scales with small spherules arranged in quincunx pattern in distal half and 11–14 interrupted longitudinal ribs in proximal half............................................................................... C. kermadeci n. sp.

7(4). Dorsal scales with ribs only

8(9). Jugal plate in valve II only, mucro central, dorsal scales with 14–16 longitudinal ribs......................... C. crassus

9(8). Jugal plates in all intermediate and tail valves, mucro posterior, dorsal scales with 8–11 longitudinal ribs........... C. kaasi