'I'liv: (iKOi'M) Hi;i;ri,i;s. l'?') 



'riiroliu'lloiit tlir St;ilc; (•(Miiinnii. 11 ihcnuilcs. ( I rcu-;iri(ills in 

 oold woatluMV J;iiiuai-\ 1 N'ovombci- 24. 



/'. crf)iul(ifns Tjec, r).5-(5 nun. in li'iiylli. is a nicnilxn- of tlu' 

 Austroriparian fauna, which may occur in the scnitlicni counties. 



*227 (821). Pr-ATYNTS bogemannt (J.vll.. Ins. Snec, III. isiu. t\'.)l : ohsn- 

 letvs Say, II. 4S1. 

 Elongate, slender. Black or piccniis, shining-, 'rimrnx lic;irt-sli,i|ie<I. 

 wider before the middle, rounded to a narrow l>asc. El.vtr:i ohlonir. twice 

 as wide as thorax, strijie very Hiic oi- ol)S(>lctc. not i)uncturtHl : lliird inter- 

 val with three very small dors;il pnnctares. Length 5.5-6.5 mm. 



Lake, Putnam and Vis^o counties: scarce. Ifibei-nates. .lanu- 

 ary 14- July 28. 



Group K. 



A small group of win<>"'^d species in which the thorax is roundi^d 

 oval or slightly cordiform, narrowly martjined. hind angles olituse 

 or rounded. ])asal impressions usually deep and punctiform ; elytra 

 nearly or quite twice as wide as thorax, with punctured striae and 

 three (rarely four) dorsal punctures placed along the middle of 

 llie third interval. 



KKV TO SI'KCTES OF GKOIJP K. 



(/. Tarsal grooves i)resent. 



b. Piceous bronze; stria' of elytra very tine; tarsal grooves on first 



joint. 22S. .KRLGiNosus. 



///-. r.Iack. legs lirown : siria' feel)ly i»nncturc(l; tarsal grooves on first 

 and second .ioiuts. 282. PUNcnKORMTS. 



ail. Tarsal gi'ooves wanting. 



c. Black or dark reddisli-hrown ; base of antenna\ pali)i. legs and sides 



of elytra brownish-yellow. 229. ltmbatus. 



cc. Black, legs reddish-yellow or reddish-brown. 



(I. Elytral strife coarsely punctured : larger. 7.5-8 nnn. 



230. CRENISTRIATUS. 



(1(1. Elytral strife finely ])unctured: smaller. 0.2-7 nun. 



2.31. RIHRIPES. 



*228 (824). Pl.\tynus .eruginosxs De.i.. Spec. III. 1827. 108. 



Elongate, very slender. Head and thorax piceous; antennae, elytra and 

 legs dai-k brown, bronzed, shining. Thorax oval, convex, very narrowly 

 margined: basal impressions very small or obsolete. El.vtra oval, convex, 

 emarginate at base; stri;p finely iiunctate; intervals flat. Length 5.5-6 ram. 



Throughout the State: common. Occurs in damp localities. 

 Hibernates. April 3-Deeemher 18. 



229 (825). PLATVNrs MMitAirs Say. Trans. Amer. Phil. Soc. TT. 182.3. 40; 

 ibid. II. 473. 

 F]longate, rather robust. Color as given in ke.v. Thorax subrotund, 

 margin very narrow, hind angles wholly rounded; basal impressions small, 



