90 PROCEEDINGS OF THE ACADEMY OF 



A. ciilta [_tuhi(lus, Fab.], A. siihbaUeata, and A. hivittata, Horn, 

 are distinct b}' the very sliort setose white erect pubescence; A. 

 gibbulo is verj- distinct bj' the prosternum produced and truncate 

 in front; this is also somewhat tiie case witli A. comota; A. gut- 

 tifera is also very distinct by the last three segments of the abdo- 

 men being closelj' and densel}^ punctate. 



Chrysobothris. 



This genus, no less than the last, is a trouble to students, but 

 here the sexual characters va^y be brought in satisfactoril}-. C- 

 soroi'^ Leseu7'i, ob>^cura^ semisculpta, and misella seem to me all 

 referable to the protean C. femorata. C. calcarata^ C. ciipraa- 

 cens, and C. contigua form a little group with the J* tibiae den- 

 tate within. C. texana resembles these in sculpture, but has the J* 

 tibia? as in C. dentijjes. C. californica on\y differs from C. den- 

 tipes b}' the larger size and hairy prosternum in the male ; C. vul- 

 canica resembles C. trinerma very closely, and ma3' be only a 

 large female of it. C. debilis and disjuncta do not appear to me 

 separable. C. deleta has the ej-es more widelj' separated on the 

 vertex. C analis I refer as a variety to G. O-signata. C. Har- 

 riai and C. seneola are distinct by the eyes much less approxi- 

 mate. G. pinyurata^ Bland, is a color variety of G. seneola. 



Agrilus, Meg. 



The somewhat numerous species of this genus are difficult to 

 determine with accurac}' ; if, however, they were collected with 

 care, and the sexes carefully determined, the labor would be much 

 reduced. There are three or four species in collections which I 

 have not described for want of suflScieut material. The charac- 

 ters are not entirely similar to the European species, especially 

 the sexual ones, which here consist of a hairy prosternum and 

 front, and a more or less distinct channel on the first two seg- 

 ments of the abdomen. These segments are connate, but the suture 

 is visible at the side in one or two species. The dorsal surface of 

 the abdomen varies remarkabh- iu the species, and might very 

 possibly afford good cliaracters ; I have only used it for the keel 

 on the last segment, which occasionall}' projects. The claws are 

 bifid in some European species, but not in any American ones 

 that I have seen ; nevertheless they differ importantly, as pointed 

 out by Leconte in his paper. 



