. Bulletin of the Natural Histort Museum. Geology series. 104 ADRAIN AND FORTEY. PLATE 13 Figs 1-3 Oopsites hiheniicus (Reed in Gardiner and Reynolds, 1909). la-b, It. 26111, cranidium, dorsal and anterior views, xl5. 2a-b, It. 26112, cranidium and left librigena, dorsal and left lateral views, xl5. 3, It. 26113, left librigena, left lateral view, xl5. Figs 4, 5 Opipeuter aff. O. inconnivus Fortey, 1974 4, It. 26114, cranidium, right dorsolateral view, xl5. 5, It. 26115, right librigena, external view, xl5. Figs 6, 7, 9,10 Phaseolops ceryx sp. nov. 6, It. 12856, cranidium, dorsal vie
. Bulletin of the Natural Histort Museum. Geology series. 104 ADRAIN AND FORTEY. PLATE 13 Figs 1-3 Oopsites hiheniicus (Reed in Gardiner and Reynolds, 1909). la-b, It. 26111, cranidium, dorsal and anterior views, xl5. 2a-b, It. 26112, cranidium and left librigena, dorsal and left lateral views, xl5. 3, It. 26113, left librigena, left lateral view, xl5. Figs 4, 5 Opipeuter aff. O. inconnivus Fortey, 1974 4, It. 26114, cranidium, right dorsolateral view, xl5. 5, It. 26115, right librigena, external view, xl5. Figs 6, 7, 9,10 Phaseolops ceryx sp. nov. 6, It. 12856, cranidium, dorsal view, xI5. 7a-b, It. 12857, cranidium, dorsal and left lateral views, xl5. 9, It. 26116, cranidium, dorsal view, xl5; 10, It. 26117, cranidium, dorsal view, xl5. Fig. 8 Proscharyia platylimbata sp. nov. It. 26118, pygidium, dorsal view, xI5. Fig. 11 Glaphurus crinitus sp. nov. It. 26119, cranidium, dorsal view, xlO. Discussion. Ludvigsen (1980: 99) has fully discussed this genus, assigning it to the Bathyuridae. Foitey & Shergold (1984: 322) considered that it was related to Annamitella Mansuy, 1920, on the basis of glabellar characters, and assigned both to Leiostegiidae. Within the genus as conceived by these workers there is a group of similar species, including A. acheila (Harrington & Leanza, 1957), A. norrisi Ludvigsen, 1980, and A. pmematum Tjemvik, 1956. It is these species that most resemble Annamitella, and all have a rela- tively elongate anterior border, incised glabellar furrows, a concave-sided glabella, and a pygidium with a subdued border lacking raised lines. The Sunwaptan species described as Bellaspidella parallela Ludvigsen & Westrop in Ludvigsen et al. 1989, appears to share all of these morphological features, and may prove to belong there. All are seemingly related to the Chinese taxon Hexianella Zhang, 1983, to which they are transferred herein. The pygidia assigned to H. hexianensis and H. exigusulcata by Zhang (1983: pi. 75, figs 6, 8) do not
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