370 THE CANADIAN ENTOMOLOGIST. 



MISCELLANEOUS NOTES ON THE HYMENOPTERA CHAL- 



CIDOIDEA: THE GENUS ARTHROLYTUS THOMSON; 



HORISMENUS MICROGASTER ASHMEAD. 



BY A. ARSENE GIRAULT, BRISBANE, AUSTRALIA. 

 (Continued from page 354.) 



3. Arthrolytus rtigifrons Thomson. 



Thomson, 1878, p. 160. 

 De Dalla Torre, 1898, p. 155. 

 Schmiedeknecht, 1909, p. 359. 

 " 3. A. rtigi/rofis m : Viridis, antennis scapo pedibusque pro parte 

 pallidis, abdomine rotundo-ovato, ventre et basi saepe pallidis. ? Lon., 



2-3 mill. 



" Species statura, omino Merapori, sed antennis postannello baud 

 parvo, ab affinibus capite fortiter subrugoso-punctato, ocellis fere in 

 triangulum dispositis, mandibulis baud validis ; antennis infra medium 

 faciei convexae insertis, articulo 10 toto vel subtus pallido, ocellum baud 

 attingente, 20 baud parvo, 30 vix conspicuo, 40 discreto, 5-10 sensim 

 crassioribus, 50 vix, 100 fortius trans verso, clava baud parva ; thorace 

 collari angusto, medio subacuto, scutello convexo, metathorace brevi sed 

 baud declivi, punctata, plica et carina media disiinctis; alis hyalinis, apice 

 ciliato, speculo parvo, cellula basaU postice pilosula ; abdomine thorace 

 fere latiore, subtus parum convexo, ventre et postpetiolo pro parte pallidis; 

 pedibus minus validis, coxis aeneis, femoribus tibiisque fuscotestaceis 

 optime distinguenda. 



" Temligen sallsynt i norra och medlersta Sverige."° 



(Thomson. 1878, p. 160). 



With the exception of the citations, I have been unable to find further 

 notice of the species in the literature. 



4. Arthrolytus pimcticollis MoMer. 



Moller, 1882, p. 180. 



Sandahl, 1883, pp. 124, 223. 



De Dalla^ Torre, 1898, p. 155. 



Schmiedeknecht. 1909, p. 359. 



" 2. Arthrolytus puncticoUis. Nigro aeneus, scutello obscure purpur- 



ascente, scapo antennarum pedibusque partim rufescentibus, abdominis 



basi viridi, nitido ; thorax subtillissime alutaceus punctis majoribus parce 



impressis ; alse hyalinae; antennae flagello tenui. c^ $. Long., 1.5-3 mm. 



c. Tolerably rare, in northern and middle Sweden. 

 November, 1911 



