. Bulletin of the British Museum (Natural History), Geology. 124 P. E. S. WHALLEY 1962 Hypsothemis fraseri sp. nov. Fig. 9 Liassophlebia magnified Tillyard; Zeuner: 162 (part). Diagnosis. Discoidal cell with broader apical side. Single row of veins form large cells in between M and Cu. Name. After the late F. C. Fraser, a specialist on Odonata. Description. Incomplete hindwing with two antenodals. Discoidal cell with very long distal side and row of slightly sinuous veins between M and Cu. Large cell below discoidal between CuA and CuP at angle to long axis of wing; the cell may be divided but
. Bulletin of the British Museum (Natural History), Geology. 124 P. E. S. WHALLEY 1962 Hypsothemis fraseri sp. nov. Fig. 9 Liassophlebia magnified Tillyard; Zeuner: 162 (part). Diagnosis. Discoidal cell with broader apical side. Single row of veins form large cells in between M and Cu. Name. After the late F. C. Fraser, a specialist on Odonata. Description. Incomplete hindwing with two antenodals. Discoidal cell with very long distal side and row of slightly sinuous veins between M and Cu. Large cell below discoidal between CuA and CuP at angle to long axis of wing; the cell may be divided but this is not clear in the specimen. Anal cells in regular arrangement along basal margin. Some anterior basal sclerites preserved with long fine hairs attached. Holotype. ; Flatstones, Stonebarrow, Charmouth, Dorset. Jackson colln. Dimensions: 40 x 16mm (incomplete). Distance between antenodals, 5-5 mm. Other material. ; data as holotype. Discussion. Degagement of this wing has allowed a study to be made of many more veins than were available to Zeuner (1962), who incorrectly identified it as L. magnified Tillyard. In particular all the cells in the basal area of the wing have been exposed. The holotype is broadly similar to Hypsothemis jurassica Pritykina, but differs in having three rows of cells in the anal and four in the postcubital areas, whereas H. jurassica has only two in the anal and three in the postcubital area and is a smaller species. The genus Hypsothemis was previously known only from the type species from Asia. The Dorset specimen has part of the hairy base of the wing preserved near the costal margin. The exact shape of the cell (quadrangular) immediately below the discoidal cell is not entirely clear in the fossil but is probably longer than Fig. 9 Hypsothemis fraseri sp. nov. (Odonata). Holotype, , hindwing, 40 mm long. Family ARCHITHEMISTIDAE Handlirsch, emend. Cowley, 1942 Genus DORSETTIA nov. Type species. Dorsettia laeta sp
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