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Show 176 MR. A. G. BUTLER ON THE GENERA [Feb. 4, body slightly elevated, rather more projecting longitudinally at its centre." Hab. unknown. Museum of St. Petersburg. This species may perhaps belong to the S. tit anus group. 15. SPHcEROTHERIUM HIPPOCASTANUM. Zephronia hippocastanum, Gervais, Hist. Nat. des Insectes, Ap-teres, iv. p. 83 (1847). ? Zephronia acteeon, White, Ann. & Mag. Nat. Hist. ser. 3, vol. in. p. 405. n. 1, pl. 7. f. 5, 5a, 56 (1859), type. Madagascar (Madame Ida Pfeiffer). B.M. The differences which Mr. White gives to distinguish his species from S. hippocastanum are not so great as between the different examples which we possess of some other species, and I much doubt its specific distinctness. Mr. W . W . Saunders has an example measuring nearly 3 inches in length, and 1 inch 8 lines in breadth ; this specimen has yellow eyes, whereas both S. hippocastanum and S. acteeon are described with black eyes. I suspect the colour of the eyes, as well as of the segments of the body, varies considerably. 16. SPHcEROTHERIUM LATUM. Spheerotherium latum, Butler, Ann. & Mag. Nat. Hist. ser. 4, vol. x. p. 358. n. 1, pl. 18. f. 3 (1872). North Madagascar (L. Bouton). Type, B.M. 17. SPH^ROTHERIUM KLUGII. Spheerotherium klugii, Brandt, Bull. Acad. St. Petersb. p. 360 (1841). " Head entirely covered with punctuations. Collar provided on its front margin with a series of points, without punctuations at its centre and behind. First dorsal segment strongly punctured in front, slightly at its centre, and not at all behind. The others up to the last strongly marked in front and at the middle by very large punctures, smooth at their hind margin. Segments 6 to 11 somewhat sloping at their hind margin. The last segment entirely punctured, including its hind margin. The colour appears to be dark olivaceous, with the posterior margin of the segments ferruginous." Cape of Good Hope. Museum St. Petersburg. 18. SPHcEROTHERIUM CONVEXUM. Spheerotherium convexum, Koch, Myriapoi'en, i. p. 31, pl. 14. f. 27 (1863). New Holland (Koch). 19. SPHcEROTHERIUM ELONGATUM. Spheerotherium elongatum, Brandt, Bull. Nat. de Mosc. vi. p. 199. n. 5 (1833) ; Koch, Myriapoden, i. pl. 14. f. 28 (1863). Zephronia elongata, Gervais, Ann. Sc. Nat. 2nd ser. vii. p. 43 (1837). Cape of Good Hope. Coll. W . W . Saunders. |