142 FAMILY II. — -carabid.t;. 



././". .Meiitnin w itli .-i siunll eiuari^inate tooth. 



XLV. Metahleti s. 



yy. habliil pulpi thick, oval: claws of tarsi iiioi-e or less serrate; 



length 3 mm. XLVI. Axinopalpus. 



ff. Tarsi with the fourth joint eiuarginate or Ijilolx-il ; tarsal claws 



serrate. 



A'. Thorax truncate at base; nientum toothed. 



/. Tarsi with fourth .joint biloliod ; elytra blue or green. 



XLV 1 1. Callida. 

 //. Tarsi with fourth joint eniargiuate. 

 }H:. Tarsi not hairy above; size niediuni, 7-11 mm. 



n. Last joint of labial )ial]ii more or less triangular or 

 hatchet-shai)ed ; thorax with sides rather widely 

 margined near base, which is squarely truncate. 



XLVIII. Plochionus. 

 iiH. Last joints of boili palpi similar, more or less cylin- 

 drical, truncate. XL IX. Pinacodera. 

 )iim. Tarsi hairy above; next to last joint of labial palpi 

 usually witli iiMiro than two setjie ; length 10-15 mm. 



L. Cymindis. 



A/,-. 'J'horax lol)e(l at middle of base; tarsi hairy above; last joint 



of labial palpi hatchet-shaped. LI. Apenes. 



CO. Mandibles without grooves on outer side ; mentum not toothed ; 



fourth tarsal joint nut dilated; claws simple. 



LII. Pentagonka. 



XXXIX. TETRAG()Noi>ERt"S Dej. lcS25. (Gr., "four + augled. ") 



Small piceous or brownisli-yellow beetles, separated from allied 

 genera mainly by the characters given in key. One species has 

 been taken in Indiana, while another may occur. 



key to INDIANA SPECIES OF TETRAGONODEBrs. 



(t. Elytra in great i)art piceous; legs and outer joints of antenna' picenus; 



prosternum margined at tip. inteksectus. 



ltd. Elytra more brownish-yellow than piceous; legs and anteume w^holl.v 



brownish-yellow: prdsternnm w*{ margined. 244. fasciatus. 



T. intersectns Germ.. 5-6 mm. in length, has been taken in Ken- 

 tucky and the Gulf States, and perhaps occurs in southern Indiana. 



'244 (SCC). Tetkagonoderus fasciatus Flald.. Proc. Phil. Acad. Nat. Sci., 

 L 1842, 298. 

 Ovate. sul)dei)ressed. Head and tlmrax i>iceous, bronzed, nunulely^ alu- 

 taceous; elytra grayish m- dull ydlnw. wilb a senucircular space about the 

 scutellum, a broad irregnlai- lirokcn liand at middle, and the apical fourth 

 piceous. Thorax one-hair wider Ih-in lung, sides curved, hind angles dis- 

 tinct; disk sniixilii. the niedian line distinct. Elytra oval, rather deepl.v 

 striate, the slri;e nut punctured: intervals convex, the third with two small 

 dorsal jjunctnres. Males witli three Joints of the front tarsi dilated and 

 clothed Willi small scales beneaih; last ventral notched at middle of hind 

 mai'iiin. r.ensrlh 4. .5 mm. 



