LONGICOHNIA. 



251 



which are found almost exclusively in Northern and Central Asia and 

 in Europe ; one or two, however, have occurred in Algeria ; of the 

 sixteen European species one only is indigenous to Britain, although a 

 second, A. mi-cans, has been very doubtfully introduced ; A.lineatocollig, 

 as above pointed out, has the power of emitting a powerful and disagree- 

 able odour, and also of making a strong stridulating noise by moving 

 the thorax up and down, so that it rubs upon the neck of the elytra ;* 

 the larva of A. lincatocollis is found in the stems of thistles (Cirsium) ; 

 it scarcely differs from that of A. asphodtli, which is figured in profile 

 by Ferris (Larves des Coleopteres, pi. xiii. figs. 5, 18); it is not much 

 narrowed behind, and has the dorsal tubercles rather strongly developed ; . 

 the legs are wanting, and there is scarcely a trace of ocellL 



A. lineatocollift, Don (angusticollis, F. ; Saperda cardui, Steph.). 

 Elongate, black or pitchy black, pilose, clothed with yellowish pubes- 

 cence, which is very thick on the under-side ; head long, pubescent in 

 front and at sides, and with a thick line on vertex, strongly punctured, 

 antennae ringed with white ; thorax about as long as broad, very slightly 

 narrowed in front, strongly and rather closely punctured, with three 

 strongly-marked longitudinal lines of pubescence, of which the central 

 one continues the line on vertex ; scutellum densely clothed with 

 pubescence ; elytra coarsely punctured at base, more finely at apex, 

 irrorated with more or less close pubescence, and presenting a finely 

 mottled appearance ; legs rather stout, clothed with greyish pubescence. 

 L. 12-18 mm. 



Male smaller and more slender, with the antennae longer than the 

 body and the fifth ventral segment broadly emarginate at apex. 

 Female larger and broader, with the antennae as long as the body. 



On thistles and Heracleum spondylium ; very local ami, as a rule, rare; Darenth 

 Wood and West Wickham Wood ; Monks Wood ; Norfolk ; Weston-on-the-Green, 

 Oxfordshire ; Wicken and Burwell Fens ; Whittlesea Mere ; I have taken it in 

 abundance in Langworth Wood, near Lincoln, on a patch of Heracleum tpondylium, 

 not yet in flower; on June llth, 1885, I took fifty specimens, and a few days 

 previously as many as these had been taken in the same ride in the wood. The Rev. 

 J. A. Mackonochie has found it in the same locality this year (1889), but much more 

 sparingly. 



SAPERDA, Fabricius. 



This genus is closely allied to the preceding, from which it differs in 

 having the antennas 11 -jointed; it contains about fifty species, which 

 are widely distributed throughout the world, and inhabit Europe, North, 

 Central and South America, South Africa, &c. ; one or two also have 

 been described from the Australian region ; they differ very much in 

 size and general appearance, and have been divided into several tmb- 

 genera by Mulsant ; of the eight European species three are found in 



1 am not sure whether this sound in not, in part at least, produced by th 

 friction of the back of the bead against the under side of the front of the thorax. 



