NO. 1777. ON JAPANESE SAWFLIES—ROHWER. 117 



Genus TENTHREDO Linnseus. 

 =Allantus Jurine. 



Latreille*^ fixed the type of Tenthredo Linnaeus as Tenthredo scro- 

 fhularix Linnseus. This species was originally included and comes 

 first in the group of Linnian species, which belong to Tenthredininae. 

 Tenthredo scropJiularix. Linnaeus belongs to the genus Allantus Jurine 

 and was named as the type of that genus by Curtis.'' Allantus Jurine 

 is therefore a synon^an of Tenthredo Linnaeus, the two genera being 

 isogenotypic. 



Tenthredo Linnaeus 1758. 



Allantus Jurine 1807. 



TENTHREDELLA, new name. 



= Tenthredo of authors. 



Tenthredo having Allantus as a synonym leaves Tenthredo of authors 

 witliout a name {Rethra Cameron not being a synonym of Tenthredo 

 of authors). For Tenthredo of authors the name Tenthredella may be 

 used. The type of Tenthredella is Tenthredo atra Linnaeus. 



TENTHREDELLA HAKONENSIS, new species. 



Perhaps related to Tenthredella adusta (Motschulsky), but has the 

 thorax largely black, and difTerent colored legs. 



Female. — Length 17 mm. Labrum wider than long, apex broadly 

 rounded; clypeus narrowly arcuately emarginate, lobes broad; head 

 shining; orbital carina not extending across the postocellar area; 

 postocellar area well-defined on all sides, wider than the cephal- 

 caudad length, with distinct, separate punctures; ocelli in an equi- 

 lateral triangle; antennae wanting in the type; mesonotum and 

 mesoj)leur8e punctured, the lateral lobes more finely so; scutellum 

 more sparsely punctured, the scutellar lobe with large punctures; 

 venation normal; prong on the inner spur of anterior tibiae nearly at 

 right angles and but little beyond the middle; sheath parallel-sided, 

 the lower apex rounded. Head ferruginous; a black spot inclosing 

 the ocelli and extending above and below it black; clypeus, labrum, 

 mandibles (apices piceous), palpi, cheeks, supraclypeal area, narrow 

 inner orbits, yellow. Thorax black; angles of pronotum, tegulse, 

 scutellum, scutellar lobe, metascutum, and notum yellow. Legs 

 yellow; bases of coxae and apical part of posterior femora black. 

 Abdomen rufo-piceous, the apical segments very dark. Wings 

 yellowish-hyaline, venation dark brown, stigma and costa yellow. 



Type-locality. — Hakone, Japan. One female collected July 27, by 

 Doctor Matsumura. 



Type.—C'^ii. No. 13334, U.S.N.M. 



aConBiderations Gen^rales, 1810, p. 435. 

 bBrit. Ent., 1839, p. 764. 



