509 



Charmatometra gcn. n 



In the « Entomologist » 1808, p 101, I described a new species 

 of Brachymetra Mayr, viz : B. Baheri. There are two spécimens 

 in the Royal Muséum of Belgium, and after a careful examination, 

 I hâve corne to the conclusion that it should form the type of a new 

 genus, characterised as follows : 



Belongs to the subfamily Gerrinœ (sens, lat.) ( 2 ) and to the 

 group HaloMtitœ ; employing Bianchi's table, it would enter into 

 the division ft'. 



Length of the head twice as great as its width at the base, 

 much wider at the base than between the eyes anteriorly. 

 Antennse : first segment subequal to the other three segments 

 together, four times as long as the second, third three-fifths 

 longer than the second, a little longer than the fourth; there is a 

 small node between the second and third segments. Pronotum 

 contracted posteriorly, latéral margins sinuate, subtruncate at the 

 base. Mesonotum (except laterally) and metanotum in front 

 (except laterally) concealed by the pronotum. Mesosternum very 

 large ; metasternum short, similar to the abdominal segments, but 

 separated from them by a sufficiently pronounced suture. 



Type : C. Baheri. 



20. Brachymetra Bakeri Kirkaldy, 1898, Entom., p. 101. 



Rostrum short, reaching a little beyond the apical margin ot 

 the mesosternum. Pronotum somewhat smooth, not carinate, 

 transversely subrugose towards the base, anterior part slightly 

 raised ail around — except in front — but scarcely constricted. 

 Metasternum not tuberculate. Anterior femora cylindric, stout, 

 shorter than the entire length of the bug (from head to apex of 

 abdomen), one-fourteenth longer than the tibise, the latter 

 (armed at the apex with a short, blunt spur) 5/6 longer than the 

 tarsi, first tarsal segment one-fourth longer than the second. 

 Intermediate and posterior femora subequal ; intermediate fémur 

 two-thirds longer than tibia, the latter five times as long as 

 tarsus.- Posterior fémur about three-fourths longer than tibia, 



(1) Not laticauda as usually written. 



(2) The Gerrinœ form two well-divided groups, viz : « Halobatitse [Halo- 

 bates, Brachymetra, Charmatometra, etc.) in which the interior margin of 

 the eyeis convex ; and p GeYrit2e(Gerris,Ptilomera,Cylindrostethus, Thauma- 

 stometra, etc.) in which the interior margin of the eye is distinctly concavely 

 sinuate. a forms the subfamily Halobatinœ of Bianchi, (3 the subfamily 

 Gerrinœ of the same author (1896, Ann. Mus. Petersh., p. 69). 



