the Species of Triplax. 131 



Sp. 5. Triplax rufipes, Steph. Illustr. iii. p. 90, pi. 17, f. 5 = 

 Triplax rujipes, Gyl!., Lacord. 

 Represented by two specimens in Mr. Stephens' Col- 

 lection — " found near Windsor." The insect is 

 much smaller than T. russica, and readily known 

 by its comparatively short form, and the abdomen 

 being black, excepting at the apex. Larger and 

 broader than T, riiJicoUis, Lacor. 



Sp. 6. Triphix rvficolUs, Steph. Illustr. iii. p. 90, pi. 17, f. 6, 



With regard to this insect (which is well figured) 

 Stephens says, '' the black head at once dis- 

 tinguishes this species from its congeners." I may 

 add, that the antennae are, moreover, relatively 

 stouter. By some singular accident Lacordaire re- 

 fers this insect to his Triplax riijicoUis, an insect 

 with a red head. Stephens' insect, however, seems 

 to be clearly the Triplax nigriceps of that author's 

 Monograph, p. 213. It is represented in Stephens' 

 Collection by a single specimen, supposed to have 

 been taken near Windsor. 

 Should any of our entomologists possess British speci- 

 mens of either of the two last-mentioned species, 

 and have it in their power to give us accurate infor- 

 mation respecting their capture, it is highly desirable 

 that it should be made known : as no positive au- 

 thority is given for the capture of those in Mr. 

 Stephens' Collection, it is of course somewhat doubt- 

 ful whether the species be really British. Very 

 many of the insects introduced into the works on 

 British Entomology stand in the same category. 

 Some, from their known habitats on the continent, 

 are so unlikely to be indigenous that I have not 

 hesitated to reject them from my catalogue. 



K 2 



