1873.] ZEPHRONIA AND SPHCEROTHERIUM. 173 



Zephronia rotundata, Gervais, Ann. Sc. Nat. 2nd ser. vii. p. 42 

 (1837). 



South Africa (Sir Andrew Smith). B.M. 



2. Sphcerotherium glabrum, n. sp. (Plate XIX. figs. 1, 1 a.) 

 Pale castaneous, with head, nuchal plate, and posterior margins 



of dorsal segments dark castaneous, almost pitchy. 



Head smooth, shining, with two broad longitudinal sulcations, 

 above and between which is a small reniform depression ; coarse 

 punctures sparsely distributed all over, excepting in the centre ; 

 nuchal plate smooth, flattened, with indistinct series of punctures in 

 front ; dorsal segments smooth, shining, their lateral wings coarsely 

 punctured, especially in front ; last segment coarsely and somewhat 

 densely punctured all over, with central area somewhat tumid and 

 outer edge projecting, especially in the centre, so as to form a 

 sloping and consequently indistinct rim. 



Length 1 inch 10 lines, width 1 inch 1 line. 



Madagascar. Two specimens. Coll. Saunders.. 



Allied to S. rotundatum and obtusum. 



3. Sphcerotherium punctu latum. 



Sphcerotherium punctulatum, Brandt, Bull. Acad. St. Petersb. 

 1841 ; Rec. Mem. Myriap. p. 179. 



" Head subrugose, entirely marked with very close punctuations. 

 Collar subrugose, with punctuations arranged in a row in front and 

 scattered above. First dorsal segment and the following marked 

 with very dense punctuations, visible to the naked eye. Last 

 segment marked with more numerous punctuations than the others, 

 swollen behind and thickened. No shining lines upon the centre of 

 the last dorsal segments. Colour olivaceous ; hind margins of the 

 segments ferruginous." 



Cape of Good Hope (Brandt). 



Appears to be referable to this section, and seems almost identical 

 with S. obtusum. 



4. Sphcerotherium obtusum. 



Sphcerotherium obtusum, Koch, Myriapoden, i. p. 5, pi. 2. f. 5 

 (1863). 



Port Natal (Gueinzius). B.M. 



Sect. b. Anterior portion of the last segment not thickened. 



5. Sphcerotherium nigrum. 



Sphcerotherium nigrum, Butler, Ann. & Mag. Nat. Hist. ser. 4, 

 vol. x. p. 359. n. 4, pi. 18. fig. II (1872). 



South Africa (Sir Andrew Smith). Type, B.M. 



6. Sphcerotherium grossum. 



Sphcerotherium grossum, Koch, Myriapoden, i. p. 5, pi. 2. f. 6 

 (1863). 



Cape of Good Hope (Koch). 



