Etopkoruj. 135 



Fabr.fyft* eteut. ?. 27S. 8? Pnyk. fn> 1/246. 8. 

 Miiller in Iltig. Mag. 4. p. 209. 



Hydreena riparia Kageltanni in Schneid. Mag< 



5- 579- 

 Hydrophitus tongipatpis Marfh. ent. br. 1. 407 ii. 



Var. b. Griieo-teftaceus, capite nigricante. 

 Habitat in aquis fbgnantibus paffim. 



Defcr, El.pygraseo dimidio major, prsefertim Ion- 

 gior. Capat raagnum, porrecl:um, nigrum, parum 

 convexum, tenue punccalatum, foveis vix ullis im- 

 preffum, clypeo pjofunde., fed non late emarginato* 

 Paipi rufefcentes, apicr nigricante; anteriores fmgu- 

 lares, longiffimi, terciam partem totius corporis fa- 

 perantes , dum extenfifunt, articu.is 4 conftantes: pri- 

 mo brevi recto; -fecundo longi/iimo arcuato, tenui, 

 apice fub - crafliori ; tertio fere dinridio breviori, api- 

 ce incrauato ; qvarto iterum longiori, medio incrafta- 

 to, utrinqve attenaato, apice fubulato, nigro; in fta- 

 tu qvieto inOexi ita, uc artic, 1 antrorfom verfus,s 

 retrorfam, 3 transveriim & 4 iteram antrorfam juxta 

 capitts latera porreftus. Antennae paiiidss, etjam fin- 

 gularem gerunt ftructuram, tamen cura proxime prae- 

 cedentium effentialiter conveniunt, etii longiores; 

 artic. 1 , longus areuatus , apice incrafTatus , 2 seqvali 

 craffitie, fed brevior, ovatus; tunc feqvitur ftylus te- 

 nuis arcuatus obliqvus fubuiatus, cui intra apicem 

 impofita eft ciava eiongata fuiba, conftans articulis 

 fex coaretatis , ultimis rnajoribus. Thorax fub-qva- 

 dra.tus, lateribus angulato-dihtatus, parum convexus, 

 crebre punclulatus , fub - inaeqvalis. Eiytra oblongo- 

 ovata, parum csnvexa, nigra, creberirne punclato- 

 flriata^ ftriis. in fingulo pirciter 16 e punclis oblongis* 

 Corpus nigrum. Pedes Paiiide rufefcerites.j 



Obf. Hydrsena riparia Kugellanni certe huc perti- 



aes, led Paipos. anticos pro antennis, & vice verfa ii- 



I 4 las 



