'I'll!'; siioi; r-w I \(;i:i> sr.wi'.xdi:!; iii:r:i'ij:s. 437 



Southern liiilf of St;i1r: riv(|iiciil . M:\vvh 'ia-May 11. Taken 

 by sifting- iiiid iVoiii divny iiii; fruit. Oiic of the smallest of Staphy- 



Ii\'l. I'.KDKixTs (!i-av. ISOd. ((ii"., "a precious sloue.") 



Small. sIciidiT. councx species, spai'sely clotheil with erect haii"s 

 and liaNinu' the |)rosteniiiin shortened lietwcen and inidei' the ci)X:r. 

 not reaching mesosteranm ; neck one-third t he widt h of head, lahiaim 

 emai'u'iuale at apex; last joiiit o[' maxillary \);\\\)\ ohtiise; tarsi with 

 the fourth .joint hilobi'd heiieath. 'Phree species are known from 

 the State, all colored alike, heiuii' reddish-yellow, shining, with the 

 head and last two se<inieiits of abdomen black; elytra dark blue. 



KEY TO INUIAN.V SPEC IKS Ol' PyEDEKl'S. 



<i. Kl.vtra iiuicli slmrter than wide: (iistinctl.v shorter than tliorax, sparsely, 



coarsel.v .uid (l(>eiil.v imuctate. SoT. PALUSTRIS. 



(/«. Elytra suhqiiadrate. ai least as l(.ii^' as wide, and as lung as or longer 



than thorax. 



I>. 'I'liorax ovate; elylral innictni-es coarse, dee] >, rattier close-set throngh- 



ont. SoS. LITTORARIUS. 



hh. Tliorax ehaigate-oval ; elytra! lumctures sliallow. iiiucli less coarse 

 and very sparse, obsolete toward apex. S;!U. obltteratus. 



S.'{7 (2572). r.EDERis PALUSTRIS Aust., I'roc. Bo.st. Soc. Nat. Hist.. XIX. 47. 

 Elongate, slender. AntenniB piceons, the apical and lour basal .ioiats 

 pale, the outer .joints gradually thickened. Head suborbicular, as wide as 

 long, rather coarsely and sparsely ]»unctate. Thorax elongate-oval, slightly 

 narrower than liead. very sparsely punctate. Elytra as mentioned in key. 

 the basal angles very broadly rounded. Abdcanen as wide as elytra, mi- 

 nutely punctate. Length 4.5-5 nun. 



Starke, Knox and Posey counties; searee. April 18-June 17. 

 Sifted from debris along the margins of ponds and lakes. 



SnS (257:5). r.EDERrs littorarii s Grav.. Mon. Col. Micr.. isuij, 142. 



Elongate, slender, subparallel. Anteniue piceous at middle, tiie liase 

 and two or three apical .ioiiits pale, the outer .ioiiits not enlarged. Head 

 slightly longer than wide, base broadly rounded; surface, as well as that of 

 thorax and abdomeu, finely and very s]iarsely imuctate. Thorax convex, 

 slightl.v Icaiger than wide, a little iian-owei' than iiead ; sides feebly curved. 

 Elytra eipial in lengtli to and laic-luurtli wider llian fluu'ax. Abdomen a 

 little narrower Iban elytra, parallel. Male with llie slil of the sixth ven- 

 tral three times as deep as wide. r>ength ^.2 5.5 nun. 



Throughout the State; common. February 14-November 10. 

 Occurs especially in open Avciodland. llibiM'iiates beneath and be- 

 tween the leaves of nndlein. 



