OF AMERICA NORTH OF MEXICO. ■ 29 



20. C. GAZELLULA. — SubtillteF scaber, pallida fuscus, pronoto obscuriore elongato, postice angustato, subtus 

 et antennis obscure testaceis, elytris apice maculis 2 subbasalibus, fasciaque media transversa albis 

 tomentosis. Long. -3. 



Hald. 1. c. 



Pennsylvania. 



21. C. 4-MACULATus. — Niger, elytris pallide flavido-fuscus, pronoto utrinque macula flava ad angulum 

 sinsrulum. Long. -S. 



Pennsylvania, Hald. 1. c. 



Probably a variety of C. colomis. 



CYRTOPHORUS. 



Antennce lohgiusculre, filiformes, pubescentes, parce pilosse. 

 Oculi subtriangulares, superne emarginati, parte postica minima. 

 Thorax compressus, baud armatus, confcrtissime reticulatim punctatus. 

 Elytra basi gibbosa, pubescentia. 



All the species known to me have the elytra ornamented with two cinerous oblique 

 anterior lines, and one transverse line about the middle. 



1. C. VERRUCOSUS. — Thorace valde compresso-elevato, elytris basi valde gibbosis, pone gibbera oblique 



impressis, postice cinereo-pubescentlbus, apice oblique truncatis, antennarum articulo 3'" spina longa 

 armato. Long. -SS. 

 Chjtus verrucosus, Fabr. 



Varies in color ; usually piceous, with the base of the elytra and tlie middle of the 

 pectus testaceous. Sometimes the whole of the under surface, except the abdomen, 

 becomes testaceous, the transverse cinereous line is not confluent with the oblique 

 ones, and the apical pubescence extends nearly up to it. Found from Massachusetts 

 to Georgia. 



2. C. NiGER.-^Niger, thorace modice compresso ; elytris basi paulo gibbosis, postice cinereo-pubescentibus, 



apice Integra, antennis non spinosis. Long. .•32. 

 Lee. Agassiz Lac. Sup. 



One specimen. Eagle Harbor. The posterior oblique line is confluent with the 

 transverse one, and the apical pubescence extends scarcely one-half way to the 

 latter. 



3. C. DUPLicATUs. — Niger, thorace paulo compresso ; elytris basi gibbosis, lineis 2 obliquis, approximatis, 



transversa valde remota, pone medium sita, apice Integra ; antennis non armatis. Long. -22. 

 Ctytus duplicatus, Hald. 1. c 



Pennsylvania, rare. Smaller than the preceding, and remarkable for the distance 

 from the oblique lines to the transverse one ; the apex is not cinereous, and the 

 punctures of the elytra are smaller. 



