— 312 — 



tum, intus et extus subdentatum . (/i. sp.) 15. pedipalpus. 



— Elytra posterius, inter séries ordinarias, 

 geminato-striata. Tibiae anticae exterius 

 geniculatae. Carina sternalis antice haud 

 sulcata (in Ç apice elevata). — cf. Palp. 

 maxill. articulus 2 linearis, art. 3 clavatus, 

 subtus concavus^ articulum ultimum haud 

 involvens; tibiarum anteriorum calcar inter- 



num haud truncatum, simplex 16. latipalpus. 



19. Elytra posterius, inter séries ordinarias, 

 manifeste geminato-striata. Segmenta 2-5 

 lateribus anguste lanuginosa(SpeciespaZae- 

 arcticae) 20. 



— Elytra posterius^ inter séries ordinarias, 

 haud vel indistincte geminato - striata . 

 Segmenta 2-5 lateribus latius lanuginosa 

 (Species americanae) 23. 



20. Linea média segmentorum 2-5 tectiformis 



vel elevato-carinata 21. 



— Linea média segmentorum 2-4 simpliciter 

 convexa, segmento 5 postice vix plicato. — 

 o^. Tars. ant. articulus 5 in laminam obtuse 

 triangularem expansus 21. aterrimus. 



21. Elytrorum sutura spinula apicali vel dente 

 armata 22. 



— Elytrorum sutura apice rotundata(l). — cr'. 

 Tars. ant. articulus 5 in laminam acute 

 triangularem et expansus; unguis exterior 



haud incrassatus 20. pistaceus. 



22. Cuspis carinae sternalis basin segmenti 2 

 vix superans. Viridi-olivaceus. — o^. Tars. 

 ant. articulus 5 in laminam brève mexpan- 

 sus; et unguis exterior haud incrassa- 

 tus, apice acutus 18. viridicollis. 



— Cuspis carinae sternalis apicem segmenti 2 

 fere attingens. Nigro-subolivaceus. — cf. 

 Tars. ant. articulus 5 in laminam obtuse 



(l)Hic verisiiTiiliter inscribendus S. aansuensis Semen. (a» 20 bis) p. 319. 



