. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 43. Diagrammatic representation of the suture of: A, Hellenites tnkkalmol Renz and Renz (1948: pi. 2, fig. 2b), at a diameter of 35 mm; B, H. praemofurus (Arthaber),—Renz and Renz (1948: pi. 2, fig. 8b), at a diameter of 30 mm; C, H. radlatus Renz and Renz (1948: pi. 2, fig. 13b), at a diameter of 20 mm; D, H. idahoense (Smith) (USNM 74994), at- a diameter of 1 3 mm. Specimens of figures A-C from Subco/umbifes fauna, Chios; specimen of figure D from Co/umb/tes fauna of southeast Idaho. Hellenites praematunis,—R
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 43. Diagrammatic representation of the suture of: A, Hellenites tnkkalmol Renz and Renz (1948: pi. 2, fig. 2b), at a diameter of 35 mm; B, H. praemofurus (Arthaber),—Renz and Renz (1948: pi. 2, fig. 8b), at a diameter of 30 mm; C, H. radlatus Renz and Renz (1948: pi. 2, fig. 13b), at a diameter of 20 mm; D, H. idahoense (Smith) (USNM 74994), at- a diameter of 1 3 mm. Specimens of figures A-C from Subco/umbifes fauna, Chios; specimen of figure D from Co/umb/tes fauna of southeast Idaho. Hellenites praematunis,—Renz and Renz, 1947: 60, 75; Renz and Renz, 1948: 44, pi. 2, figs. 3-3a, 7-7a; Kummel, in Arkell et al., 1957: L149, figs. 181, 6a-c. Hellenites praematuriis var. aegaeica Renz and Renz, 1947: 60; Renz and Renz, 1948: 45, pi. 2, figs. 6-6b, 8-8b, 9-9a. Hellenites trikkalinoi Renz and Renz, 1947: 60, 75; Renz and Renz, 1948: 46, pi. 2, figs. 1-la, 2-2b, 4-4b. Hellenites trikkalinoi var. graeca Renz and Renz, 1947: 60; Renz and Renz, 1948: 46, pi. 2, figs. 5-5b. Hellenites cf. praemattinis.—Chao, 1959: 145, pi. 41, figs. 1, 2 (not 3, 4). This species was established by Arthaber on the basis of two specimens, one of which he considered to be a variety. The preser- vation of both of these specimens leaves much to be desired. The measurements are as follows: D W H U W/D H/D U/D Holotype—Arthaber, 1911: pi. 24(8), fig. 9a, b. Paratype—Arthaber, 1911: pi. 24(8), fig. 10 a, b. The suture is not preserved on either of these specimens. This anomalous late Scythian species remained somewhat of a problem until the discovery of the contemporaneous Sith- coJumbites fauna from Chios. A number of specimens of H. praematunis have been well illustrated by Renz and Renz (1948). In addition to H. praematunis, these au- thors recognized a variety and another species based mainly on the relative promi- nence of the ribs. I
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