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. SpHiEROTHERIUM HIPPOCASTANUM. 



Zephronia hippocastanum, Gervais, Hist. Nat. des Insectes, Ap- 

 teres, iv. p. 83 (1847). 



1 Zephronia actreon, White, Ann. & Mag. Nat. Hist. ser. 3, vol. iii. 

 p. 405. n. 1, pi. 7. f. 5, 5a, 5b (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. actceon 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. 



Sphcerotherium latum, Butler, Ann. & Mag. Nat. Hist. ser. 4, vol. 

 x. p. 358. n. 1, pi. 18. f. 3 (1872). 



North Madagascar (L. Bouton). Type, B.M. 



17. Sphcerotherium klugii. 



Sphcerotherium klugii, Brandt, Bull. Acad. St. Pe'tersb. 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 1 1 some- 

 what 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 fer- 

 ruginous." 



Cape of Good Hope. Museum St. Petersburg. 



18. Sphcerotherium convexum. 



Sphcerotherium convexum, Koch, Myriapoc'en, i. p. 31, pi. 14. f. 

 27 (1863). 



New Holland (Koch). 



19. Sphcerotherium elongatum. 



Sphcerotherium elongatum, Brandt, Bull. Nat. de Mosc. vi. p. 199. 

 n. 5 (1833) ; Koch, Myriapoden, i. pi. 14. f. 28 (1863). 



Zephronia elongata, Gervais, Ann. Sc. Nat. 2nd ser. vii. p. 43 

 (1837). 



Cape of Good Hope. Coll. W. W. Saunders. 



