466 (90) Mr. G. R. Crotch's Revision of 



Triplax japonica.* 



Triplaxjajionica, Crotch, Ent. Ifo. 2Iag. ix. 189. 

 Japan (Lewis). 



Triplax collaris. 



SUpha collaris, Schall. Act. Hall. i. 256 (1783). 



Triplax , Bed. Abeille, v. 36. 



capistrata, Lac. Erot. 217. 



France, Germany, Austria, Dalmatia. 

 At once recognised by its black head. 



Triplax sibii'ica, sp. n. 



Ovata, siibdepressa, nigra, antennis pedibus thoraceqiie ferni- 

 gineis, hoc antice posticeque nigro, valde transverso, sat ci'ebre 

 pnnctulato; scutello magno, nigro, fere Isevi; elytris basi denticu- 

 lato-marginatis, subtiliter punctato-sti'iatis, interstitiis parce punc- 

 tatis, circa scuteUuni contuse punctatis. L. H lin. 



L. Baikal (Maack). 



The depressed ovate form conjoined with the black head will at 

 once distinguish it. 



Triplax flavicollis. 



Triplax Jlamcollis, Lac. Erot. 218. 



, Lee. J. Phil. (2) I. 'i\.—Proc. Phil. vii. 1G2. 



, Crotch, Tr. Am. Ent. Soc. 1873, 358. 



Var. conjinis , Lee. Proc. Phil. vii. 162. 



Pennsylvania, New York, Washing-ton, Illinois, etc. 



Triplax Goudoti. 



Triplax Goudoti, Lac. Erot. 205. 

 Madagascar. 



Triplax omogera. 



Triplax omogera, Lac. Erot. 206. 

 Madagascar. 



Triplax pauxilla. 



Triplax 2)aiixilla, Lac. Erot. 207. 



^Madagascar. 



Under-side as in T. omogera. Mentum quadrangular. 



