150 Acta Societatis pro Fauna et Flora Fennica. I. 



thorace elytrisqve subtilissime punctatis; abdomine segmentis 2— 4 

 profunde punctatis, 5 — 6 sublaevibus. Long. 1 lift. 



Mas: fronte foveolata, abdominis segmento 7:o dorsali gra- 

 nulato-punctato, apice rotundato, eodem ventrali leviter producto. 



Femina ignota. 



Species abdominis punctura basi profunda fere ut in spe- 

 ciebus generis Stenus valde insignis et a congeneribus mox di- 

 stingvenda. — Caput prothorace distincte angustius, subrotunda- 

 tum, nigrum, nitidum, subtiliter punctulatum et griseo-pubescens, 

 fronte convexiusculum et foveola parva distincta impressum (forte 

 tantum in mare), ore palpisqve dilutioribus. Antennae apicem 

 versus distincte incrassatae, brunneae, basi testaceae; articulo se- 

 cundo tertio distincte longiore, 4:o parvo, oblongo-qvadrato, qvam 

 qvinto distincte minore, 5:0 et 6:o qvadratis, 7—10 sensim distin- 

 cte latioribus, ultimo penultimo transverso plus qvam dimidio lon- 

 giore. Prothorax transversim qvadratus, elytris paullo angustior, 

 subconvexus, basi obsolete impressus, fusco-piceus, vix visibiliter 

 punctatus et griseo-pubescens. Elytra prothorace l U longiora, 

 opaca, subtilissime punctata, fusco-nigra, tenuissime griseo-pube- 

 scentia. Abdomen nigrum, sublineare, segmento 6:o qvam 5:o ta- 

 men paullo angustiore, segmentis 2 — 4 profunde concinne puncta- 

 tis, 5:o et 6:o sublaevibus, 7:o obscure flavo, in mare punctis 

 parvis elevatis pallide testaceis instructo. 



Sallsynt; jag har funnit den flygande om aftonen pa uorra Oster- 

 bottens slattland i Juni 1873. — U. F. M. 



430. A. socialis Pay k. — Thorns. Sk. G. Ill, 76, 21 et IX, 

 276, 21. — Aleochara Sahib. 1. F. 270, 46. — Homalota trino- 

 tata Kraatz I. D. 272, 76. — Sharp Brit. Horn. 194, 88. 



Allman i utsipprande tradsaft och under ruttnande vegetabilier i 

 sodra Finland, men jag har ej funnit den nordligare an i Ruovesi (62°). 

 — Utbredd ofver storre delen af Eur. — U. F. M. 



431. A. hybrida Sharp. Nigro-picea, subtilissime punctu- 

 lata et tenuissime pallido-pubescens, pedibus elytrisqve testaceis, 

 bis circa scutellum angulisqve apicis obscure fuscis, antennis dilute 

 fuscis, apicem versus vix incrassatis, articulis 4:o et 5:o latitudine 

 fere longioribus, G— 10 parum transversis, ultimo elongato, atte- 

 nuato; prothorace transverso, basi obsolete impresso; elytris hoc 



