212 Mr. A. G. Butler on the Genus Terias. 



cated on each side, and the thorax is moderately narrowed 

 behind, and not sinuated before the angles. 



Platysma retinens. 

 This belongs to Eccoptogenius (Chaudoir), a genus closely 

 allied to Remhus and having no near affinity with Trigono- 

 toma, near which Chaudoir placed it. Walker's species is 

 closely allied to, if not identical with, E. moestus, Chaud. 



Driinostoma marginale. 



A Harpalid, with upper surface finely punctured and frontal 

 furrows as in Bradgcellus and allies. _ The type being female, 

 its generic position cannot be ascertained. 



There remain four species of Walker of which I have no 

 notes, viz. Clivina rectUj Agonum placiduhim, Stenolophus 

 injixus, and Tach/s rufala. The synonymy of Tricondyla 

 femorata is given in the Munich Catalogue. Of Tricondyla 

 tumidida and sdtiscabra^ Mr. CO. Waterhouse informs me, the 

 types cannot be found. 



XIX. — Notes on the Genus Terias, with Descriptions of new 

 Species in the Collection of the British Museum. By 

 Aethur G. Butler, F.L.S., F.Z.S., &c. 



[Plate v.] 



I HAVE recently been rearranging the Museum series of the 

 Lepidopterous genus Terias, of which genus we possess most 

 of the named forms ; as I suspected, our species fully bear 

 out my expressed opinion that any attempt to associate the 

 allied forms without most careful attention to breeding, and 

 that through several generations (in order to avoid all possi- 

 bility of mistake) , will result in the union of the entire series 

 (the sections Xanthidia and Eurema being perhaps excepted) as 

 one variable species, a consummation devoutly to be depre- 

 cated. 



Of the various modifications of typical Terias we have in 

 the Museum series upwards of 150, some of which must 

 certainly be varieties, whereas others doubtless have a full 

 right to be regarded as genuine, because unvarying and 

 locally fixed, species ; but it is quite impossible for any one, 



