Feb., 1847.] 173 



front and side margins whitish, broadly at the anterior angles ; edges 

 dusky : scutellum dusky ; elytra darker than the thorax, shining, with the 

 basal and lateral margins broadly whitish, the latter abbreviated before the 

 apex, and containing three blackish spots, of which one is located on the 

 humeral tubercle ; middle of the base with a large dark reddish spot ; apex 

 whitish ; punctate- striate ; pygidium strongly punctured, with the apex 

 white; beneath blackish, tinted with rufous; two or three apical segments 

 of abdomen and feet rufous. This species varies much, and it is difficult 

 to determine which is the type. 



Var. a. As in the preceding; thorax with two oblique, abbreviated 

 whitish basal lines : elytra with the lateral margins not abbreviated, ma- 

 culate with rufous. 



Var. b. Smaller than the type ; head black, marked with white as in the 

 type ; thorax black, highly polished and scarcely punctulate, with the front 

 and side margins as in the type ; a transverse series of four impressed 

 points each side of the middle towards the apex ; elytra black, punctate- 

 striate ; basal edge, apex and lateral margins, white, inner side of the latter 

 bisinuate ; humeral tubercles black ; feet as in the type ; antennae color of 

 the feet ; beneath black ; a large quadrate white spot in the middle at base 

 of the abdomen. Cryptocephalus charus, Melsh. MS. The white basal ab- 

 dominal spot is present in almost every specimen. 



12. C. clathratus. Black; head, femora and thorax fulvous, the latter 

 with the lateral margins and two basal spots, yellowish ; elytra with about 

 sixteen yellowish spots. If 1. long. Pennsylvania. 



Crypto cephalus clathratus, Melsh. Catal. 



Head pale fulvous, scarce punctulate ; a slight longitudinal impressed 

 line between the eyes ; antennae fuscous, with the five first joints testace- 

 ous ; eyes plumbeous ; thorax fulvous, with two oblique, dilated, abbrevi- 

 ated yellow basal lines ; lateral margins yellcfw ; posterior and lateral 

 edges blackish ; surface obscurely punctulate ; scutellum piceous : elytra 

 deep black, punctate-striate, with about sixteen yellow spots, placed in 

 four transverse series, spots in the basal series six, all linear, eight spots in 

 the two intermediate series, and two at apex; pygidium strongly and coarse- 

 ly punctured : beneath dusky, tinted with rufous ; a whitish spot on the 

 middle of the abdominal base ; femora fulvous ; tibia? and tarsi color of 

 the abdomen. 



Var. a. Rufous or fulvous ; thorax immaculate; elytra black, with about 

 10 yellow spots. Cryptocephalus puleher, Melsh. Catal. 



13. C. sulphuripennis. Black ; elytra pale yellow, maculate with black ; 

 thorax with the lateral margins and two basal spots, yellowish ; feet pale 

 fulvous. 2 1. long. Pennsylvania. 



Head black, sparsely punctulate ; orbits, labrum and clypeus, whitish : 

 antenna} yellowish, dusky at tip ; thorax black, distantly punctulate, with 

 the lateral margins and two oblique basal spots, yellowish ; scutellum 

 black ; elytra pale yellow, with three transverse rows of small black spots, 

 apical row formed of four spots, and each of the two others six : punctate- 

 striate, punctures dusky ; pygidium black, immaculate, coarsely punctured; 

 beneath deep black : feet pale rufous. 



14. G.formosus. Deep black ; thorax with the lateral margins and two 



