. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. Fauna and Stratigraphy of the Storm'bcrg Series. 331 ORDER PLECTOPTERA. FAM. EPHEMERIDAE. PHTHARTUS AFRICANUS, sp. nov. Text fig. 2. This is represented by several imperfect larvae of which the specimen figured (Cat. No. 5732) is nearly complete, lacking the head and lateral appendages. The cereal setae are faintly indi- cated • - and have been drawn in on the evidence of a second spec- imen (No. 5733) consisting of the hinder portion of an abdomen in which the long setae are well-marked. As preserved
. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. Fauna and Stratigraphy of the Storm'bcrg Series. 331 ORDER PLECTOPTERA. FAM. EPHEMERIDAE. PHTHARTUS AFRICANUS, sp. nov. Text fig. 2. This is represented by several imperfect larvae of which the specimen figured (Cat. No. 5732) is nearly complete, lacking the head and lateral appendages. The cereal setae are faintly indi- cated • - and have been drawn in on the evidence of a second spec- imen (No. 5733) consisting of the hinder portion of an abdomen in which the long setae are well-marked. As preserved, the body without the cerci is 15 mm. long and 3'5 mm. broad in the Fig. 2. PJithartus o/nccmus, Htn. The earliest Ephemerid larvae belong to the genus Phthartus Handl. from the Permian of Russia. The present form seems fairly similar to that genus, but the cerci an1 shorter and stonier. It may be grouped provisionally as Phthartus africanus sp. nov. Tijpe. Impression on shale • S. Afr. Mus. Cat, No. 5732. Locality. Road-cutting, Siberia, "Wodehouse, C. I'. Horizon. Shale-band near base of Cave Sandstone. ORDER ORTHOPTERA. FAM. MESOBLATTINIDAE, Handl. STRIATOTEGMEN AFRICANUM, gen. et sp. nov. Text fig. 3. Tillyard's emendation of the characters of this family runs as follows: - "Subcosta much reduced. Radial area extensive and strongly developed, sending numerous branches towards the anterior. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum; South African Museum. Annale van die Suid-Afrikaanse Museum. Cape Town [etc. , South African Museum, etc. ]
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