AQUATIC AND SEMIAQUATIC HETEROPTEEA. 



By Teiso Esaki. 



(With 6 Text-figures.) 



Although a few representatives of this group of insects have been described 

 from material collected in Fiji, the Marquesas Is., New Caledonia and the Society 

 Is., none have yet been recorded from Samoa. 



In the present paper ten species, representing four families, are mentioned 

 or described. All belong to genera typical of the South Pacific region, but they 

 include five new species, some of which may prove to be endemic. 



Unless otherwise stated, all the specimens were collected by Messrs. P. A. 

 Buxton and G. H. Hopkins. 



VELIIDAE. 

 Microvelia Stal. 



Besides those occurring in Australia, three species of this genus, Microvelia 

 oceanica Distant (New Caledonia), M. jpacifica Kirkaldy (Fiji), and M. prompta 

 Cheesman (Tahiti), are known to exist in the South Pacific Islands. Another 

 new species is now added to the fauna. 



1. Microvelia samoana, sp. n. Text-fig. 1. 



$. Black, covered with grayish pubescence. Head black, lateral portions 

 of vertex along the eyes brown, pubescence whitish along the median longi- 

 tudinal line. Eyes black, shining. Antennae dark brown, apical segment 

 darker. Rostrum dark brown, with the extreme apex black. Pronotum black, 

 with a conspicuous brown band along the anterior margin where the pubescence 

 is pale brown. Dorsal and ventral surfaces of meso- and metathorax, and of 

 abdomen totally black, connexivum sometimes slightly brownish. Legs brown, 

 with the apical one-third to two-fifths of femora, tibiae and tarsi much darker 



than the rest of femora, trochanters and coxae. 



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