Macuocnema is one of Illiger's families of Haltica, charac- 

 terized by him in the 6th Vol. of his Magazine, which I have 

 never been able to obtain ; but Gyllenhal has transcribed them 

 into the Appendix of his 4th Vol. No mention however is 

 made of the anomalous antennae, which are only 10-jointed, 

 the 2nd joint being wanting or lost between the 1st and 3rd; 

 a character first pointed out by Mr. Haliday : it is also di- 

 stinguished by the length of the posterior tarsi, which are 

 attached in a groove on the inside, remote from the internal 

 angle. 



The following are recorded in the "Illustrations" as British 

 species, and they have all been taken in the neighbourhood 

 of London excepting Nos. 2, 7 and 8^. 



1. chalcomera III. Mag. P. Dulcamaras Ent. Heft. 



2. Hyoscyami Linn. 



2'^. unimaculata Curt. Brit. Ent. pi. 486. — M. August, 



amongst grass near the sea-shore. Isle of Wight, and 



on Hyoscyamus niger, near Poole. 



Linnaeus probably comprehended several of our speciesunder 



the name of Hyoscyami, and I should be inclined to consider 



our insect the same, if I had not examples different in shape 



and better answering to his description. Gyllenhal takes no 



notice of any rufous spot on the inside of the posterior thighs 



in his descriptions of H. Hyoscyami and Napi, and this latter 



species is only half the size of the former; and if Illiger's 



H. Bapce has the interstices of the elytra smooth (viz. impunc- 



tate) and the posterior femora black with the base rufescent, 



or rufous with the apex black, as stated in the Illustrations, it 



cannot be his insect, 



3. Napi Gyll. 3. 567. ^Q. 4^. Rapae ///. Mag. 



5. chrysocephala. Linn. — erythrocephala X/ww. var.? — Napi 



Fanz.21. 3. — M. July, Dover; Sept., gardens, Suffolk. 



6. rufilabris Ent. Heft. 



7. brunnipes Meg.'i — Near Dover and Cambridge. 



8. nigricollis Mar. 205. 91. — anglica Gmel. — sordida Kir. 



•Dar. — May and June, nettles and hedges, Suffolk. 

 8*. marcida ///. Mag. — April, Southend, Essex. 



9. picicornis Kir. — June and July, gardens, Southend and 



Suffolk. 

 9'. apicalis Ste. 

 10. exoleta Linn.l — nigriceps Kir. — Coombe and Oxford, 



amongst grass. 

 10\ pallida Bl. i\fa^.— Near Southend. 

 36. picinaMffA-s. 206.92.— May, nettles and hedges, Mr. Sa- 



mouelle. Yorkshire, Suffolk and Oxford. 

 36^ Ericae Ent. Heft. 



The Plant is Hyoscyarmis nigcr (Common Henbane). 



