GENUS MIOROSTILBA. 215 



The European species not yet found in Britain are 

 pusilla, Giraud, villosa, Htg., and gracilis , Htg. (if the 

 last be distinct from pentatoma). 



1. COTHONASPIS PENTATOMA. 



PL XI, fig. 9. 



Cothonaspis pentatoma, Htg., Germ. Zeit., ii, 201, 9; Thorns., 



Oef., 1861, 400, 1. 

 ? Cothonaspis gracilis, Htg., Germ. Zeit., iii, 357, 26. 



Black ; the apex of coxae, base and apex of femora, the tibiae and 

 tarsi, piceous to piceous-red, the tibias darker in the middle ; base of 

 abdomen bare. Antennas with the 5 -jointed club abrupt. Abdomen 

 shorter than the thorax. Scutellum finely punctured, the cup minute. 

 Second abscissa of radius three times the length of the third ; the third 

 nearly as long as the basal pair united. Cubitus complete. 



The <^ has the antennas longer than the body, and the fourth joint 

 thickened and one-half longer than the third. 



Length 1| mm. 



Not common. Loch Aweside, June. 

 Continental distribution : Sweden, Germany. 



Genus MICROSTILBA. 



Hicrostilba, Foerster, Verh. z.-b. Ges. Wien, 1878, 346. 



Second abdominal segment without a hair-fringe. Antennas in $ 

 13-jointed, without a distinct club. Parapsidal furrows distinct, 

 parallel. Scutellum blunt above, the cup large, shallow. Median seg- 

 ment bicarinate. Radial cellule closed ; cubitus complete. 



The only other British genus without a hair-fringe is 

 Cothonaspis, from which Micro stilba is readily known 

 by the antennae not having a five-jointed club, and by 

 the distinct parapsidal furrows. Foerster distinguishes 

 three other groups with parapsidal furrows, namely, 

 Diplyphosema and Gronotoma, with the furrows strongly 

 converging and meeting at the scutellum : the former 

 has the radial cellule open and the latter closed ; and 

 Disorygma, which has the furrows parallel as in Micro- 

 stilba, and widely apart at the scutellum, which only 

 differs in having the radial cellule open. 



