466 Mr. W. L. Distant on Ethiopian Heteroptera. 
five onchospheres. ‘The latter (without their envelopes) 
measure 15 wu in diameter. 
This appears to be only the second species of Davainea 
met with in this family of birds (Bucerotidea) ; the one 
hitherto described is D. emperus, Skrjabin, 1914*, from 
Buceros seratogynina. ‘The present species differs from 
D. emperus in the number of its testes, the absence of the 
well-developed sphincter-muscle of the genital cloaca, and 
other details. The scolex unfortunately cannot be compared 
in the two species, as that of D. emperus is unknown. 
XLVI.— Ethiopian Heteroptera: some new Species of Redu- 
viidee belonging to the Genera Pysttala and Platymeris. 
By W. L. Distant. 
PYSTTALA. 
Pysttala, Stal, defy. Vet.-Akad. Forh. 1859, p. 187. 
Platymeris, Lap. (part.), Stal, ibid. ; Hem. Afr. iii. p. 123 (1865). 
‘“‘Thoracis lobo postico quadrispinoso, antico multispinoso, hem- 
elytris spinulis armatis.” 
Type, P. ducalis, Westw. 
Although Stal subsequently relegated Pysttala to a section 
of the genus Platymeris, it is clearly entitled to generic rank, 
and I am now able to add four more species to it. Of the 
type, ducalis, Westw., I can only refer to Westwood’s figure 
and description, for the type cannot be traced by Prof. Poulton 
at Oxford; and although Westwood stated that another 
specimen was contained in the British Museum from Sierra 
Leone, no such example is now to be found in the National 
Collection. 
Pysttala samwelli, sp. n. 
Head, pronotum, corium, body beneath, and legs black ; 
membrane dark ferruginous brown, especially on its apical 
*area; a subquadrate spot near middle of corium, a broad 
subapical fascia to the femora, and somewhat large marginal 
spots to the abdomen sanguinegus; antenne with the first 
joint black, moderately stout, not quite reaching base of 
head, second joint ferruginous, about three times as long as 
first, third more ochraceous in hue, both second and third 
* C.B. Bakt., Jena (orig.), Ixxy. p. 69. 
