380 ENTOMOLOGICAL NOTES, 



coiistrictus, post medium late constrictus : elytra prothorace 

 latiora, linearia, apice rotundata, tarsi pentameri, articulus 1"". 

 brevis, obliquus, 2"'. ad 4""\ lobati. Generi Tillo certe affinis. 



Hydn. serrata. Nigro-cenetim ; antennis {capitido fusco excepto) 

 elytrorum maculis magnis 4, pedihusque pallide testaceis : caput 

 et prothorax suhtilissime punctata : elt/tra profunda punctata, 

 apice serrata. (Corp. long. '175 unc. ; lat. '06 unc.) 



Inhabits the United States of North America. Mr. Foster 

 took two specimens at Mount Pleasant in Ohio. 1 am indebted 

 to Mr. Westwood for the dissections in the cuts illustrating 

 this and some other genera, and for much valuable information 

 and assistance during the preparation of these notes. 



Genus. — Opilus, Latreille. 



Opil. castaneus. Castaneus, glaberrimus, pilosus; ocidi nigri : 

 prothorax remote et parce punctatus : elytra striato-punctata, 

 utrinque ultra medium^ macula magna laterali brunned sig- 

 nata ; \droqiie elytra quoque maculis 3 flavis signato quorum 

 1^. basalis 2^. lateralis, ante medium sita, 3^. subsuturalis, me- 

 diana. (Corp. long. S unc; lat. "1 unc.) 



Inhabits North America. Mr. Foster took a single speci- 

 men near Mount Pleasant in Ohio. 



Natural Order. — Lampyrites, Newman. 



Genus. — Digrapha, Newman. 



Caput parvum, sub prothorace fere reconditum ; antennae dimidio 

 corporis longiores; 1 1-articulatge, serratae; articulus l"^ mediocris, 

 extus incrassatus, 2''^ fere reconditus minutissimus ; casteri com- 

 press!, dilatati, magnitudine subsequales : prothorax parvus, 

 antice angustus, rotundatus, postice latus, truncatus, bisinuatus, 

 angulis acutis ; elytra complanata, dilataf a, carinata, carinse nervu- 

 ris numerosis transversis connexse, prothorace tripio quadruplove 

 latiores ; latitudo maximus pone medium ; apicibus rotundatis. 



Note. — Lycus reticulatus of Fabricius belongs to this genus. 



Digr. typica. Caput nigrum; antennce nigrtv, articulo9f favo, 

 prothorax quam D. reticulatae latior, niger, lateribus lat*' 



