386 APPENDIX. 



Order RHYNCHOTA. 



The small collection of insects belonging to this order, made by- 

 Mr. F. Oates, comprised only eight species, all belonging to the family 

 Pentatomid^e ; of these, however, four prove to be undescribed 

 species, thus showing that Matabele Land possesses a Rhynchotal 

 fauna of which at present we know very little. The collection also 

 proves of considerable interest in the study of geographical distribution, 

 as it included a species of the oriental genus Erthesina, of which 

 no Ethiopian representative was previously known to entomological 

 science.— (W.L.D.) 



Family PENTATOMIDiE. 



ti. Plonisa plagiata, Signoret, Ann. Soc. Ent. Fr., ser. 6, i. p. 

 327, pi. 7, f- 52 (1 881). 



f2. SOLENOSTETHIUM LILIGERUM, Thunberg. 



Cimex liligerus, Thunberg, Diss. Nov. Ins. Sp., ii. p. 32 (1783). 

 t3- Erthesina Africana, Distant, n. sp. 



Closely allied to the common eastern species E. fullo, Thunberg, 

 but differing in the following respects ; the size is much smaller, and 

 whilst the colour and markings above are very similar, the corium is 

 without the discal dark patch. The body beneath is much darker 

 than in Thunberg's species, the margins of the prosternum and the 

 under surface of the head being black ; the abdomen is castaneous, 

 with a very large opaque black macular patch on each side, occupying 

 the whole of the disk, excepting the two basal and two apical segments ; 

 legs very dark, castaneous or blackish. 



Other peculiar structural characters differentiating this species from 

 E. fullo are the more symmetrical head, which is more tapering, has 

 the lateral margins more regular and not notched, the apex regularly 

 and profoundly sinuate, both notched in front and channelled above, 

 and the eyes a little more removed from the base, the pronotum having 

 the lateral angles a little broader, and the slightly larger scutellum with 

 two large dark rounded fovese at the basal angles. The membrane is 

 pale fuscous, with the veins dark and very distinct. (Antennae mutil- 

 ated.) The tibiae are only slightly dilated. Long. 19 mm. Exp. 

 pronot. angl. 10 mm. 



This is the only African species of Erthesina yet described, and, 

 despite some slight structural peculiarities as detailed above, it is still 

 in all fundamental respects congeneric with the other species of the 

 genus, which are wholly oriental. m L Distant. 



t4- CiENOMORPHA IMPLEXA, Distant, n. sp. 



Obscure ochraceous, thickly but irregularly covered with coarse, 

 dark fuscous punctures. Head and eyes black, the central lobe for 

 two-thirds of its length from the base regularly margined with con- 



