172 [Feb., 1847. 



8. C tridens. Black; antennae and feet testaceous; head varied with 

 whit. ; thorax with the lateral margins broadly white, each with a large 

 subquadrangular black spot; elytra varied with white. 1J 1. long. Penn 



Cryptocephalus tridens, Melsh. Catal. 



Black : head irregularly punctured, varied with white ; antennas and feet 

 testaceous-yellow ; labrum white ; thorax profoundly and irregularly punc- 

 tured, with the lateral margins broadly white, each with a large subtrapezoi- 

 dal blackish spot : scutellutn black : elytra deeply and irregularly punctured, 

 some of the punctures, towards the middle and sides, ranged in irregular 

 series, their interstices convex: each elytrum with a cruciform spot and 

 apex, white ; pygidium varied with white ; epipleurae and margins of the 

 abdomen, white. Basal edge of the elytra most frequently, and occasionally 

 an abbreviated longitudinal line at the middle of the thoracic apex, white. 



9. C.flavicornis. Black; antennae, feet, lateral margins and two basal 

 spot3 of the thorax, yellowish ; elytra, each with two similarly colored spots 

 l 1. long. Pennsylvania. 



Black; head profoundly punctured ; eyes black, with the superior and an- 

 terior edges, and labrum, white ; antennae and feet, testaceous-yell jw : thorax 

 profoundly and* inequally punctured ; lateral margins, lateral third of ante- 

 rior and posterior edges, and two dilated short basal lines, testaceous, lines, 

 forming junctions at right angles with the inner ends of the colored basal 

 edge; scutellutn black: elytra deeply, finely and inequally punctured, to- 

 wards the lateral margins irregularly punctate-striate ; a lateral linear spot 

 a little before the middle and apex, whitish ; pygidium each side with a 

 small whitish spot. 



10. C. luieipennis. Black ; elytra luteous, with the lateral and basal edges 

 and suture, black ; thorax with the lateral margins and two basal spots 

 whitish. If 1. long. Pennsylvania. 



Cryptoeephalus fasciatus and binoiatus, Melsh. Catal. 



Robust, black: head sparsely punctulate, with a longitudinal impressed 

 frontal line ; clypeus white, a similarly colored transverse spot between the 

 eyes ; antennae fuscous or blackish, with the five first joints and mouth, tes- 

 taceous-yellow ; thorax sparsely, very minutely and obscurely punctured, 

 glossy ; lateral maagins narrowly, and a spot each side of the middle before 

 the base, testaceous, tinted with yellow : scutellutn black ; elytra luteous or 

 ochreous, with the suture, lateral and basal edges and humeri, black ; be- 

 hind the middle with a common, arcuated dusky fascia, being sometime? 

 formed of spots, and sometimes entirely wanting; finely punctate-striate : 

 interstices flat, impunctured ; pygidium with two small whitish spots at tip ; 

 feet black, with the tarsi fuscous ; coxas of anterior feet each with a whit*- 

 spot ; a similar spot each side of the anterior margin of postpectus. 



11. C. mutabilis. Dull rufous ; thorax with the anterior and lateral mar- 

 gins white ; base, lateral margins and apex, the same, the two former macu- 

 late with blackish spots. 22 1. long. Pennsylvania. 



Cryptocephalus nobilis, Melsh. Catal. 



Dull rufous, shining ; head sparsely punctured and impressed on the front . 

 orbits, clypeus and labrum white ; antennas pale brown, with five basal joints 

 testaceous ; thorax very minutely aud distinctly punctured, polished, with the. 



