D y t i/ c u j, 503 



neftrata, & intra apicem altera, pierumque minor, 

 obfoletior. Corpus fubtus nigrum nitidum immacu- 

 latum. Pedes quatuor antici rufo-picei, pofteriores 

 nigro-picei; tarfi antici maris coar«2lati, breviores, 

 fed parum dilatati» 



35. D. affinis: oblongo-ovatus convexus 

 niger, fubtiliflirrte pundtato- fubflrigofus, 

 antennarum ba(i pedibusque rufis, elytris 

 lineoiis duabus peilucidis. 



Poijk, fn, I. 211. 21. Sclionfh Jtjneii. 2.7^, 4^, 



Habitat in aquis flagnantibus paffim. 



Defcr. liiter minimos hujus familioe, prsecedentl 

 fere triplo minor, obiongus, convexus, anguftior; 

 fuperficies fub oculo acute armato omnium fubtiiif- 

 fane & obfoletius reticulato- ftrigofa, Caput depref- 

 fum nigrum nitidum, ore & labro teftaceis ; in ver- 

 tice maculse duae transverfales rufefcentes ; palpi paU 

 lidi apice fufci» Antennae tenues, thorace longio- 

 res, pallide rufefcentes, apice fufc^e. Thorax bre- 

 vis transverfus, anterius paullo anguttior, iate emar- 

 ginatus, angulis porredis acutis, lateribus obliquis 

 rotundatis marginatis, poftice fere truncatus, angu- 

 lis fubreftis obtufis , iupra convexus niger nitidus 

 immaculatus; ftriga evidens punclata continua intra 

 apicem, & alia, in media iate interrupta, intra baftn, 

 ut in plerisque, Scuteilum breve latum triangulare 

 nigrum» Elytra eiongato- ovata, in medio non la- 

 tiora, apice rotundata, fupra convexa, tota nigra 

 nitida; in difco antico (eries tres irregulares e pun- 

 ftis impreiTis, pofterius vero punda plurima fparfa 

 rnordiuata; verfus apicem , juxta futuram, ordo e 

 punftis fimplici ferie digeftis; paullo pone medium^ 

 intra marginem, lineola parva pallido-pelluctda, fae- 

 pa obfoleta, & intra apicem alia obliqua, maj or, 

 evidentior, Corpui fubtus nigrura nitidum, confure 



li 4 ftri- 



