308 PROCEEDINGS OF THE NATIONAL MUSEUM vol.84 



evident when suaveolens is compared with the description of niger, 

 for it disagrees in almost every particular. In a subsequent reference 

 to Cainpoplex niger, Provanclier ^ himself expressed the opinion that 

 it is nothing more than a variety of "Limneria genuina Say" (undoubt- 

 edly Casinaria genuina [Norton]), and still later he * actually synony- 

 mized it with genuina. His type specimen without the original name 

 label is probably among those placed by him under genuina. The 

 last-named species agrees entirely with the description of Camjyoplex 

 niger, and the synonymy is doubtlessly correct. 



It is obvious, then, that the lectotype designated by Gahan and 

 Rohwer can not serve in that capacity; that Cainpoplex niger Pro- 

 vancher is not synonymous with Exetastes suaveolens; that Exetastesi 

 niger Davis (not Cresson) and Exetastes provancheri Dalla Torre and 

 the lectotype of Campoplex niger Provanclier must go into synonymy 

 with suaveolens; and that therefore Exetastes provancheri Dalla Torre 

 can not be accepted as a new name for Campoplex niger Provancher, a 

 synonym of Casinaria genuina (Norton). 



Recognizable immediately by its pale yellow tibiae and tarsi con- 

 trasting with the black body and otherwise black legs. 



Female. — Very similar in size and structure to anthracinus as de- 

 scribed above, except that the malar space is fully three-fourths basal 

 width of mandible, the ocelli much more than half postocellar line in 

 diameter, antenna with four or five fewer joints, punctation of thorax 

 somewhat finer and denser, notauli more distinctly impressed, liind 

 femur very slender, inner calcarium much more than half basitarsus, 

 and apical tarsal joint much shorter than third. 



Black with all tibiae and tarsi and front and middle femora apically 

 yellow; wings dilutely infumate, paler at base; ovipositor sheath black 

 at base, brown at apex. 



Male. — Dift'ers from female in the usual way, larger ocelli, shorter 

 malar space, and less attenuate antennae, and also in having the front 

 and middle femora more extensively yellow and the %\dngs usually 

 •paler. 



Type locality. — Of suaveolens, Illinois (?); of quehecensis, Quebec. 



Type. — Of suaveolens, destroyed; of quebecensis. Public Museum, 

 Quebec. 



Remarks. — Within its range in the Northeastern States and south- 

 eastern Canada this is one of the commonest species of the genus. 

 Among about 75 specimens before me the following States and Prov- 

 inces are represented: New Brunswick, Quebec, Ontario, Manitoba, 

 Maine, New Hampshire, Massachusetts, New York, Michigan, Ohio, 

 Pennsylvania, Maryland, and Virginia. Included in this series are 

 specimens in the Canadian National Collection, American Museum of 



3 Petite faune entomologique du Canada . . ., vol. 2. Hym6n., p. 786, 1883. 



* Additions et corrections au volume ii do la Faune entomologique du Canada . . ., indet, 1889. 



