95 
fascia media nigra a sequentibus optime disting* 
uendus. 
1 b. R. infuscatus: Ovalis, leviter convexus, subtus ni- 
ger, supra testaceus, vertice prothoracisque macula 
media transversim ovali nigris; elytris minus crebre 
pallido-irroratis ; pedibus flavis, femoribus posticis me- 
dio nigro-piceis. Long. 4 lin. 
Mas: unguiculis anticis elongatis, sequalibus 
Colymbetes infuscatus Er. Käf. d Mark. I. 151. G. 
Prsecedenti simillimus, sed paullo minor, fere latior, 
elytris minus crebre pallido-irroratis, femoribus posticis 
medio nigro-piceis, tarsis anticis maris minus dilatatis un- 
guiculis rcqualibus mox distinctus; a R. conspcrso anten- 
nis articulis apice fuscis , statura breviore mox discedens. 
Sällsynt; funnen vid Lund. 
2. R. bistriatus pag 51. 
Mas : unguiculis anticis elongatis, longitudine sequalibus. 
Obs. A prajcedentibus prothorace rufo, fascia abbreviata 
basali nigra mox discedens. 
9. R. collaris pag. 52. 
Mas: unguiculis anticis longissimis , subsequalibus, ti- 
bia llaud brevioribus. 
Obs. Prothorace corporeque subtus toto tlavis ab aftini- 
bus optime distinguendus. 
4. R. melanopterus pag. 5‘2. 
Mas: unguiculis anticis longissimis, subasqualibus. 
