. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. 552 Annals of the South African Museum. had a very obscurely punctate membrane, although generally nothing of the kind could be discerned. 4. Costnarium holmiense, Lundell, Desni. Suec, Nov. Act. reg. soc. scient. Upsala, Ser. 3, viii, 1871, p. 49, Tab. II, fig. 20; W. & G. S. West, op. cit, iii, 1908, p. 1, PI. LXV, figs. 1, 2. Forma ad var. integrum, Lund, accedens. Long., 54-58/x; lat., 33-35 fx- lat. isthm., 15-17/* (Pig. 27). Sample 50 (very rare). Only two specimens were observed which agree
. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. 552 Annals of the South African Museum. had a very obscurely punctate membrane, although generally nothing of the kind could be discerned. 4. Costnarium holmiense, Lundell, Desni. Suec, Nov. Act. reg. soc. scient. Upsala, Ser. 3, viii, 1871, p. 49, Tab. II, fig. 20; W. & G. S. West, op. cit, iii, 1908, p. 1, PI. LXV, figs. 1, 2. Forma ad var. integrum, Lund, accedens. Long., 54-58/x; lat., 33-35 fx- lat. isthm., 15-17/* (Pig. 27). Sample 50 (very rare). Only two specimens were observed which agreed with the type, except in the nature of the apices ; these were either slightly refuse or slightly convex, the two forms occurring on the two semicells of the same individual (Pig. 27). These specimens should be compared with 5 5p-. Fig. 27.—Costnarium holmiense, Lund., forma. a form of var. integrum, Lund., described by Borge (Beitr. z. Algeufl. v. Schweden, 2, Bot, Notiser, 1913, p. 16, Tab. I, fig. 10), which, how- ever, lacks the small undulations of the lateral margins. 5. Cosmarium obtusatum, Schmidle, Engler's Bot. Jahrb., xxvi, 1898, p. 38; W. & G. S. West, op. cit., iii, 1908, p. 7, PI. LXV, figs. 13. 14. Sample 32 (rare). Side by side with specimens showing typical dimensions (lung., 03 /i ; lat,, 51 ,x; lat. isthm., 15/*), others were observed which were relatively broader (long., 66 /*; lat.,00,/; lat. isthm., 15/0). Theapex was moreover, in some cases, faintly undulate. It is possible that these variations indicate a distinct form. C. obtusatum has been recorded from the Karoo by G. S. West. 0. Gosmarium quadratum, Ralfs ; W. A G, S. West, op. iii. 1908, p. 57. PI. LXX, tigs. 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
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