2'2 SJOSTEDTS KILIMANDJARO-MERU EXPEDITION. 12: 3. 



tidus (MAYE) ? but the hind lobe of the pronotum is less elongate, and the spiracles, 

 if darkened, are much more minutely and obscurely so. I have seen only females 

 of L. cegyptiacus. 



Gerris swakopensis STAL. 



1858 0. V. A. F. XV. 318. Seven (macropterous and apterous) examples from 

 Kilimandjaro (Jul. 12 and Sep. 22) in brine pools, Natron lakes. 



Tenagogonus albovittatus ST!L. 



1855 0. V. A. F. XII. 45. Sixteen examples (three apterous <j> adults and 13 

 nymphs) from Kilimandjaro, Kibonoto, (Jan. 1), river Sanya. STAL omitted this 

 species from the Hemiptera africana. 



Metrocoris distant.! KIRKALDY. 



1904 Entom. XXXVII. 62. Nineteen macropterous and apterous adults and 5 

 nymphs from Kilimandjaro; Kibonoto lowlands and steppe (Jan. and Aug.); Usam- 

 bara, Mombo (June). 



The basal margin of the pronotum in the apterous form is pale (interrupted 

 in the middle), not black, as misstated in the description. I will describe the ma- 

 cropterous form in my forthcoming Revision of the Gerridae. 



Ithagovelia nigricans (BURM.). 



KIRKALDY 1902 Entom. XXXV. 63. - Six examples from Usambara (macrop- 

 terous and apterous). 



Tenagoveliii gen. nov. 



Has the appearance of a large, elongata Microvelia, from which it differs by 

 the fore tarsi being bisegmentate, the others trisegmentate, the basal segment annu- 

 liform in each. It differs from Velia and Rhagovelia by the longer bead and the tarsal 

 segmentation, and differs from all three by the fore trochanter having a short median 

 spine beneath, and the fore femur having an antemedian spine beneath. The antennal 

 tubercles are strong, and the abdomen beneath is strongly sulcate. 



Tenagovelia sjostedti sp. nov. 



Apterous fornt : dark greyisk fuscous, with sparse silver pubescence. A rather 

 obscure transverse fawn-coloured submarginal line on the pronotum anteriorly. La- 

 bium partly, coxae, trochanters, basal two-thirds of fore femora and extreme base of 

 the other femora, pale orange-brown. Antennae 18. 11. 11. 12. 



Length 5 1 > mill., max. width about IVa mill. 



Usambara and Tanga, 7 examples. 



? Mesovelia proxima SCHOUT. 



1906 A. S. E. Belg. XLIX. 388. - Kilimandjaro (Sept 12) in brine pools. 

 I cannot separate the single (macropterous) example from my M. orientalis (which 

 MR. DISTANT absurdly synonymizes with M. mulsmtti), but it is not in very good 

 condition, and this is a very difficult genus. 



