NEW BRITISH SPECIES, ETC., IN 1864. 79 



that gentleman, Mr. W. Garners, and myself, at the end of 

 last August. 



6Q. Ch^tocnema aridula, Gyll., Ins. Suec. iv. 663, 

 42—43 {Haltica, striata)-, Allard, Gal. Anis. 567, 

 171 ; G. R. Crotch, Cat. Brit. Col. ; id. Zool. 9001 

 (1864), Plectroscells. 



" Cambridge." Mr. Crotch states this was named for 

 him by M. Allard. 



I possess a specimen taken on the south coast. It differs 

 from aridella in having the head and thorax very finely 

 punctulated, the two basal joints of the antennae with a black 

 mark on the upper surface, and the thorax longer. My 

 specimen is also larger than aridella. 



From confusa it may be known by the black marks on 

 the basal joints of the antennae, the darker tibiae, the duller 

 appearance of its thorax, on which the punctuation is finer, 

 and the finer punctuation of its elytra. In colour, also, it 

 differs, being bronze, as in aridella. 



67. Thyamis rutila, Illiger, Mag. vi. 67; Allard, Gal. 

 Anisop. 131, 78 {Teinodactylu) ; G. R. Crotch, Cat. 

 Brit. Col.; id. Zool. 9001 (1864). 



" Weston-super-Mare." IMr. Crotch states this was named 

 for him by M. Allard. 



From Allard's description (loc. cit.), T. rutila differs from 

 the common jacohcece in having brilliant red elytra, more 

 strongly and deeply punctured, and in being brown under- 

 neath. The basal joint of the posterior tarsi appears also to 

 be a little longer. 



T. jacohcecB often varies into a deep red colour, especially 

 evident when alive : it would therefore be as well for British 

 Coleopterists to examine these red varieties carefully. 



