256 NORTHERN ZOOLOGY. 



Family TENTHREDINID^. Tenthredinidans. 



CXLVIII. Genus ALLANTUS. Panz. 



(354) 1 . * Allantus leucostoma. White-mouthed Allantus. 



A. (leucostoma) atra, nitida, glabra; antennis thorace subbrevioribus ; naso emarginato ,■ labro, palpis, mandibulisque Lasi, 

 albis ; pedibusflavis; tarsis posticis tibiarumque apice nigris. 



White-mouthed Allantus, very black, glossy, naked ; antennse somewhat shorter than the thorax, with the notched nose, 

 upper lip, feelers, and base of the mandibles, white ; legs yellow ; with the posterior tarsi, and apex of the pos- 

 terior tibiae, black. 



Length of the body 6 lines. 



One specimen taken in Lat. 65°. 



DESCRIPTION. 



Body narrow, black, glossy, without hairs. Head scarcely so wide as the trunk, wedge-shaped ; 

 palpi, suborbicular upper lip, emarginate nose, and base of the mandibles, white ; apex of the latter 

 rufous ; antennas a little shorter than the trunk, nine-jointed, with the third joint longer than any of 

 the others ; neck constricted : tegulse testaceous : wings subhyaline with piceous nervures : legs 

 yellow, with the apex of the tibiae, and the whole of the tarsi of the posterior legs, black : abdo- 

 men linear, acute at the anus. 



This species comes near Allantus ater, but the mandibles are rufous at the apex ; the palpi are 

 whiter ; and the legs of a different colour. 



II. UROCERATA. Lat. 



Family SIRICIDiE. Siricidans, 



CXLIX. Genus SIREX. Linn. 



(355) 1. Sirex bizonatus. (Stephens.) Two-zoned Sir ex. 



Sirex bizonatus. Steph. Cat. 342, 3998 ; Illustr. Mandib. vii, 114, 2, t. xxxvi, / 1. 



Length of the body 18 ) lings 



Expansion of the wings 27 ) 



Taken in Lat. 65°. and in the Journey from New York. 



