O. savignyi 43 



Lit. and Icon. : Savigny (1826, PI. IX, excellent figures of dorsum, venter, legs ; 

 less good of capitulum and mouthparts), reproduced by Walckenaer and 

 Gervais (1837-47, PI. XXXI, Fig. 2).-Guerin-Meneville, 1829-43, PL VI, Fig. 4, 

 mouthparts taken from Savigny without acknowledgement. — (J. L. Koch, 1844, 

 p. 2. — L. Koch, 1875, p. 1, notes (only) three specimens from vicinity of Anseba 

 river.— Murray, 1877, p. 182.— Megnin, 1880, p. 134 (nothing original). — 

 Laboulbene and Megnin, 1882, p. 324 (nothing original).— Berlese, 1889, 

 PI. VII.— Neumann, 1896, pp. 27-29, Figs. 27-32 ; here reproduced.— Pocock, 

 1900, p. 49.— Neumann, 1901, p. 256.— Lounsbury, 1899.— Braun, 1906, p. 372. 

 O. — Christophers, 1907, PI. I-V, two text figures, deals especially with internal 

 anatomy. Figure of larva here reproduced. — Donitz, 1906, p. 145, PI. Figs. 3 

 and 6 (here reproduced). 



Adult : Body (PI. II, Figs. 1 and 2) short oval, broadly rounded at 

 both ends and often slightly narrowed on a level with coxae III and IV. 

 Integument thick, and covered by distinct mammillae (100 to 200 /x in 

 diameter, PI. II and Fig. 59), except along certain tracts which appear as 

 furrows in unfed individuals, and are still recognisable by the absence 

 of mammillae in gorged specimens; their arrangement is best seen 

 from the figure. They are transversely wrinkled and present no 

 obvious discs. Numerous short hairs between the mammillae, more 



<3 



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Fig. 59. Fig. 60. 



Fig. 59. O. savignyi. Granulations of integument, x 65 (Nn. 1896, fig. 27). 

 Fig. 60. O. savignyi. A "fossette" or disc, x23o (Nn. 1896, fig. 28). 



numerous on the venter. Venter (PI. II, Fig. 2) : supra-coxal folds 

 well-marked, and bearing four eyes of equal size, one pair facing coxae I 

 and the other the intervals between coxae III and IV 1 ; coxal folds 

 slight ; pre-anal groove well-marked ; behind it, three pairs of 

 longitudinal furrows, especially noticeable in large specimens; a short 

 median depression in the form of an inverted Y ; anus wider than long 

 (400 x 450 fi). Spiracles above the supra-coxal folds, 600 fj. wide, 



1 See Figs. 1 and 83 of O. coriaceus where position of eyes is similar. 



