K1RKALDY, GEKRIDAE, (OKIMDAK AND .NOT ONECTIUAE. 23 



llydronu'trii alltolineolata REUTER. 



1882 Oefv. Finsk. Forh. XXV. 38. - Twenty examples from Usambam and 

 Tanga. 



Corixidae. 



Micronecta sciitellaris (STAL). 



Sigam id. STAL 1858 0. V. A. F. XV. 319. - - One example from Kilinm- 

 itdjaro (Sept. 22.), in a brine pool. 



Micronecta sulcata (SIGNORET). 



Sigara id. STAL 1865 Hem. afr. III. 193. - Twenty examples from Kili- 

 iiidiidjdro. which agree exactly with STAL'S verry laconic description. 



Arctocorisa sp. n. ? 

 One immature adult from Kilimandjaro. 



Arctocorisa kilimaiuljaronis sp. nov. 



Allied to A. lateralis LEACH. Pale ivory white, pronotum and tegmina pale 

 cinereous, the former with about 11 or 12 thin blackish-brown lines, the latter 

 with irregular, nonserial, contortuplicated, abbreviated, dark brown markings. Corio- 

 membranal suture narrowly pale. Vertex a little swollen, rounded anterior, basal 

 half keeled medially, angularly produced behind; 2 rows of punctures on each side 

 of the middle. Pronotum long; keel very short, reaching to 4 th dark line. Pro- 

 notum and clavus slightly rostrate; corium hairy, not rostrate, punctured. Mesoxy- 

 phus acute. Middle tibia shorter than tarsus and claw together, claw rather longer 

 than tarsus. 



Facial depression extending from eye te eye, rather deep, reaching back 

 nearly as far as base of frons. Fore tibia ventrally keeled ; pala elongately cultrate, 

 curved in profile, with about 30 pegs, which lengthen towards the apex of the pala. 

 Strigil very minute. Length. 5 3 /4 mill. - KiUiiuindjaro (brine pools and Kibonoto 

 low lands, July 9 12). 



Arctocorisa sjosteilti sp. nov. 



Allied to A. pectoralis (FiEBER). Blackish brown; head and underside pale och- 

 reous; eyes greyish. Pronotum with about 8 verry thin, percurrent, yellowish lines. 

 Tegmina with very thin, yellowish, contortuplicate, abbreviated, nonserial lines, 

 which are straighter on the basal part of the clavus; membrano-corial suture verv 

 narrowly immaculate, fuscous, a darker spot on the exterior margin. Head very 

 slightly produced in the middle basally, vertex rounded in line with the eyes and with 

 4 rows of superficial punctures. Mesoxyphus acute, but not acuminate. Pronotum 

 and clavus rostrate, corium punctured. Middle tibia as long as the claws, one third 

 longev than the tarsus. 



