62 
Nematodes in Elephants 
2. Parabronema africanum, sp.n. 
(Figs. 4-7.) 
Sclerostoma dathratum ($) Baird (1868), p. 262; Figs. 2 $, 2 a, 2 6. 
For measurements see Table , p. 65. 
This is a much larger form than the preceding, and the inequality in size 
between the sexes is less marked, the male attaining about two-thirds of the 
Fig. 4. Parabronema africanum . The head. A, dorsal view; B, lateral view; C, the extremity, 
seen from the front, a., auricular appendages; d.s., dorsal shield; /., lip; l.p., lateral papilla 
of lip; p.p., papillae of dorsal and ventral shields; s.l.p., sublateral papilla of lip. 
length of the female. The male, however, is easily distinguished by the well- 
marked spiral coiling of the tail, and it is rather astonishing that Baird did 
not suspect an error when he described the tail of the female S. clatliratum as 
“ obtusa, saepe convolutaF 
