150 LE CONTE.— LONGICORN COLEOPTEEA 



GOES. 



Thorax utrinque sub-imprcssus, lateribus spinosus. 



Sterna simplicia. 



Palpi articulo ultimo cylindrico, truncate. 



From Monohammus, with which these species have been confounded, they are 

 distinguished by the complete anterior acetabula, smaller front, less prominent gense, 

 and truncate palpi. The sexual character is only found in the antennae, which are 

 a little longer in the male. 



1. G. TiGRiNA, nigro-testacea, deusissime albo-pubescens, thorace punctis obscuris variegato parce punctate, 



subinsequali, callo ad medium laevi notato, elytris nigro punctatis, maculis irregularibus obscuris fascias 

 duas fere formantibus, scutello ochraceo-pubescente, antennis testaceis subannulatis. Long. 1-05. 



3Iono7iammus tomentosus Ziegler. P. Ac. 2, 47 : Hald. 51. 



Ceramlyx tigrinus De Gear. 5, 113, pi. 14, 6. (nee Oliv. 67, 10, 142.) 



Pennsylvania ; Mr. Ziegler. The base of the elytra is rough, with elevated points : 

 the pubescence beneath is varied with yellowish cinereous. 



2. G. TESSELATA, obscura, undique breviter fulvo-pubescens, thorace confertissime punctato, elytris punctatis, 



guttis parvis rotundis densius pubescentibus variegatis, versus basin scabris, subtus densius pubescens. 

 Long. 1-08. 

 Monohammus tesselatus Hald. 51. 



Georgia ; the antennae in my specimen are broken oif : the elytra are marked with 

 two or three extremely indistinct lines. The pubescence of the upper surface is 

 extremely short and fine. 



3. G. PULCHBA, obscure testacea, breviter fulvo-pubescens, thorace confertissime punctato, elytris ante 



medium punctatis, basi valde scabris, basi fasciaque postica late infuscatis, antennarum articulo l™" 

 obscuro. Long. '90. 

 Monoliammus j^ulclier Hald. 52. 



Pennsylvania, S. Carolina and New York : very rare ; Messrs. Guex and Ziegler. 

 The punctures of the elytra are almost obsolete behind the middle, the posterior 

 margin of both bands is very badly defined. 



4. G. PULVERULENTA, obscurc testacea, undique breviter cinereo-pubescens, punctis obscuris variegata 



thorace punctato, medio obsolete canaliculato, elytris parcius punctatis, testaceo subnebulosis, basi non 

 scabris. Long. '7 — -88. 

 Monoliammus ^yulverulentus Hald. 51. 



New York and Saratoga. 



5. G. DEBiLis, testacea, capite thoraceque fulvo-pubescentibus, hoc confertim grosse punctato, spinis lateralibus 



brevissimis, elytris punctatis minus dense fusco-pubescentibus ad medium cinereo-marmoratis, versus 

 apicem fulvo-marmoratis. Long. '56. 



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