THE CANADIAN ENTOMOLOGIST. 281 



well-impressed, grooves on face, which is evenly and closely 

 punctured ; antennae as long as the body, thickened and flattened 

 beyond the apex, the joints of flattened portion broader than long ; 

 thorax evenly punctured, more densely on the pleura ; scutellum 

 slightly reddish at apex ; metathorax above and at apex 

 transversely wrinkled, areola smooth, polished, carinae well 

 marked, tooth at hind angles large and distinct ; wings hyaline ; 

 abdomen shagreened, especially at base of second segment ; 

 petiole with two very well marked and angular carina}, not reach- 

 ing apex ; postpetiole finely shagreened ; gastroca2li large. 



$ . Metallic blue ; face, anterior and posterior orbital lines, 

 mandibles, annulus on antennte, scape beneath, short line beneath 

 the wings, scutellum, anterior legs in front, coxae, trochanters, 

 tibiae, tarsi and apex of femora in front white, rest of tibife and 

 tarsi of front 4 legs and tarsi of posterior legs ferruginous. In 

 other respects like the female. 



The type ? of this species was included by Cresson in his 

 redescription of clarus in Tr. Am. Ent. Soc, VI., 1877, p. 199, 

 and was the exception which he made as to the white scutellum 

 of that species. The male specimen was added to the collection 

 afterwards, and differs from the male of clarus in having the white 

 annulus on the antennas, as well as in the metathoracic character. 



Habitat.—^. H. ( $ type). Me. ( $ type). 



Types. — In the collection of the American Entomological Society. 



3. P. RUBRiCAPENSis, Provancher, 5 . 



1882. Phitylahus rtcbricapeiisis^ Provancher, $. Nat. Can., XIII., 



P- 329- 

 Habitat.- -Cdi^ Rouge, Canada. 



4. P. INCABUS, Davis, $ . 



1897. Platylabus incabus, Davis, 9 . Tr. Am. Ent. Soc, XXIV., 



P- 352- 

 Habitat. — Moscow, Idaho (Aldrich). 



5. P. scuTELLATUS, Provanchcr, ? , c? • 



1875. Ischnus scutellatus, Provancher. Nat. Can., VII., p. in. 



1 87 7. Platylabus scutellatus, Cresson. Tr. Am. Ent. Soc, VI., 



p. 200, ff . 



