THE ENTOMOLOGIST. 



pupation, the first specimens of the perfect insects nialiing 

 their appearance late in April, other individuals coming out 

 of their cocoons during June. 



The parasite of this species of Tenthredo spins up inside 

 the blotched leaf. — C. Healy ; 74, Napier Street, Hoxton, 



Notes on British Coleoptera. By G. R. Crotch, Esq. 



1. On the Genus Triplax. 



The rediscovery of one of Stephens's long-lost species will 

 make an analysis of this genus the more useful, and perhaps 

 lead to the identification of the other two. The diagnoses are 

 compiled from M. Bedel's monograph in the * Abeille.' 



A. Head and scutellum black. 



1. T. melanocephala, Latr. (ruficoUis, Steph) Black; 

 thorax and legs red; antennae pitchy red, with the inter- 

 mediate joints very close, moniliform and subequal. Long. 

 2 lin. Said by Stephens to have been taken near Windsor 

 in June. 



(The only other black-headed species is T. collaris, Schall., 

 which is oval, witli the last joint of the palpi much dilated, 

 and the antenna? of a clear red, with a brownish club.) 



B. Head and scutellum red. 



2. T. aenea, Schall. Bright red; elytra bluish green; 

 antenna? piceous. Long. 2 lin. Common. The colour of 

 the elytra at once distinguishes this species. The variety 

 bicolor of M. Bedel is not a variety, but merely an old greased 

 specimen. 



(The T. Gyllenhalii (bicolor, Gyll. nee Marsh.) is an oval 

 species, with black elytra and dilated palpi: it occurs in 

 Sweden, and will probably be found here eventually.) 



c. Head red; scutellum black. 



3. T. russica, Linn. Ferruginous ; scutellum, elytra, 

 antennae and breast beneath black. Long. 21- — 3 lin. Very 

 abundant; sometimes in large numbers under bark in winter. 



4. T. Lacordairii, Crotch (ruficollis, Lacorcl. nee Steph.) 

 Resembling the preceding, but about half the size, and more 

 parallel ; the abdomen also is black. This was placed in his 



