. Bulletins of American paleontology. 44 Bulletin 332 Description. — Shell size average for the group. Spire elesated; inflation of whorls variable with resultant change in overall shape. Eight whorls in the adult; protoconch polished, bulbous, consisting of I Vi whorls, axis eccentric. Three narrow varices developed on the earliest post-nu- clear whorls, a single spine produced at the shoulder; occasionally small open spinelets on the anterior portion of the vances at the intersection with the primary spiral threads. Between the varices three to five narrow sharp axial ridges. Radial sculptur
. Bulletins of American paleontology. 44 Bulletin 332 Description. — Shell size average for the group. Spire elesated; inflation of whorls variable with resultant change in overall shape. Eight whorls in the adult; protoconch polished, bulbous, consisting of I Vi whorls, axis eccentric. Three narrow varices developed on the earliest post-nu- clear whorls, a single spine produced at the shoulder; occasionally small open spinelets on the anterior portion of the vances at the intersection with the primary spiral threads. Between the varices three to five narrow sharp axial ridges. Radial sculpture of primary and secondary threads with some tertiary threadlets; about 16 pri- mary threads on the body whorl and pillar, .^pe^ure vanable from almost circular to oval; outer lip crenulated by about ten denticles; labium appressed at posterior portion, standing free at anterior por- tion, bearing eight to ten rugae. .Anterior canal long and almost straight. (Yokes, 1963a, p. 106) Diagnosis. —TnyavicaXe muricid. each varix orna- mented by short sharp spines. Labium rugose entire length. Siphonal canal long, narrow, weakly deflected dorsally. G. 83 948 (selected by Pflug, 1961, p. 45). Type locality. —LocaWxy TU 1293 (here restricted), Gurabo Formation; Rio Mao, west bank, bluff" just below Paso Chorrera, or about 12 km (by road) south of Mao (= Iocs. USGS 8519, 8520; Bluff 1 of Maury; see Saunders. Jung, and Biju-Duval, 1986. text-fig. 29). .Material. —Over specimens, all from the Gur- abo Formation. Measurements (in mm).—. specimen height diameter locality BMNH G. 83 948' TU 1293 USNM 323871 TU 1250 USNM 323872 TU 1211 USNM 323873 TU 1210 USNM 323874 TU 1210 USNM 643762 USGS 8528- USNM 643763 ^ USGS 8528- USNM 323876 TU 1214 USNM 323877 TU 1206 USNM 323875 TU 1210 NMB H 16989 NMB 16864 TcM-hgufL- 19. —Apertural and abapertural views
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