243 



LIST OF DUTCH 



, A A E I 



SIXTH part: 

 HYDRAOHJSTELLAE Latr. 1802 



witli synonymical notes , 



BY 



Dr. A. C. O V D E 91 A X §. 



HYDRAOHNELLAB Latr. 180S. 



Hydraclinidae Lebert 1874. 



HYDRAGHNIDES Koch 1842. 



Hydrodroma Koch 1837. 



1. Hydrodoma umhrata Müll, [rubra de Geer) [punìcea Koch). 

 Sneek, March., Apr., June, July; Warnsveld, Apr,; Utrecht, 

 Apr. , May. 



Hydrachna Müll. 1769. 



2. Hydrachna geograpjiica Müll. — Utrecht, Apr. — 



3. llydraclina crußnta Müll, {globosa de Geer) {globator Fabr.) 

 globulus Herm.). — Ächlysia on Nepa cinerea, Sneek, Apr.; 

 on Notonecta glauca , Sneek , Mrch. ; on Dytiscus marginalis , 

 Sneek, Apr.; — imago. Patria, Dr. Everts; Sneek, Mrch., 

 May, June, July; Offingawier, June. 



Diplodontus Dug. 1834, 



4. Diplodontus filipes Dug. — Sneek , May. 



