109 



Laccophilus undulifer Motsch. 3 / 4 1. * 



— flaviceps Motsch. i i: f\ 1. * 



— basalis Motsch. l*/ 2 * 

 Colymbetes interclusus Walker 5 1 . 2 \\ 

 Hydaticus fractifer Walker 5*/ 2 h 



— discindens Walker 6 1. 



— vittatus F. 



— festivus 111. 



Dytiscus extenuans Walker. 8 1. 



Cybister limbatus F. 



Porrorhynchus indicans Walker 7 1. 



Dineutes spinosus F. 



Gyretes discifer Walker 3 3 4 1. 



Gyrinus nitidulus F. 



— obliquus Walker 3 1. 

 Hydrous rufiventris Nietner 9 1. * 



— inconspicuus Nietner 4 4 / 2 h * 

 Hydrobius stultus Walker l 3 / 4 1. 



Philhydrus nigropiceus Motsch. 



Elongato-ellypticus , convextts, subtiliter punctulatus, ni- 

 tidissimus, niger, corporis limbo pedibusque piceis, palpis, 

 antennarum basi tarsisque testaceis ; thorace transverso, 

 trapézoïdale, marginis angustissime rufis, angiilis posticis 

 acuitSj prominulis; elytris thoracis basi lalitudine, elongato- 

 ovatis, stria subsuturali aniice l j 3 parie oblilerata; femo- 

 ribus posticis infuscatis. 



Long. l' (J -17 a 1. - lat. '/,-«/, 1. 

 Colombo. 



Philhydrus fuscatus Motsch. 



Elongato-ellypticus , convexus, punctatus, nitidus, nigro- 

 fuscus, corporis thoracisque marginis, palpis pedibusque 



