NORTH AMERICAN COLEOPTERA. 299 



anus black, with a small white spot on each side. Venter black, the secoud, 

 third, fourth and fifth segments bordered with white, widely interrupted me- 

 dially, each side, having a prominent rounded indentation. 



'J, . — Head broader than lotig, abdomen narrow and elongate. All the abdom- 

 inal segments bordered with white, the border of the first segment being narrow 

 and interrupted. 



Var. — One specimen has a narrow white line on the scape of the anteunse and 

 a black spot on the mandibles. 



5 . — Resembles female, but the first abdominal segment has a narrow, inter- 

 rupted border of white, the other segments being more narrowly bordered than 

 in the 9, and the indentations not so prominent. 



Var. — One specimen has a small white spot on the scape of the antenuie. 

 Length 8i lines. 



Hah. — Pennsylvania, Virginia, New Hampshire, Colorado, Mon- 

 tana, Maine, Washington Territory, Massachusetts. 



Ten specimens, 9 > ^ > 5 • Collections of American Entomologi- 

 cal Society, Agassiz Museum and J. McFarland. 



This species is readily distinguished from V. arenaria Fubr. and 

 V. macidata Linn, by the approximation of the eyes and mandibles, 

 and the entirely black antennie (see table). 



Notes on some types of Morth American C'ERAMBYCID^ 

 in the British illusenm. 



BY c. J. GAHAN, London, England. 



Through a false impression, by which Dr. Horn regarded the 

 Liopufi higuttatiiK of LeConte as specifically identical with the 

 Graphimrus pustllas of Kirby, confusion still exists in the nomen- 

 clature of the North American Acanthocini. 



Graphisurus pusillvs Kirby is, as I believe Dr. Horn was the fii'st 

 to discover, a true Acanthocinm, and is synonymous with A. obsoletus 

 Oliv. Kirby's type in the British Museum collection proves this, 

 and consequently his genus as such cannot stand. The name Graph- 

 isurus must, however, still be retained for the genus, the characters 

 of which, as LeConte and Lacordaire gave them, apply to the two 

 species — triangulifer Hald. and fnsciatus De Geer, and the name 

 Urographis, employed by Dr. Horn for these species must properly 



