352 PHYTOPHAGA. [Longitarsus. 



of a pale yellow testaceous colour, which, however, is variable, and is 

 lighter when the insect is alive, with the antennae brownish towards apex, 

 and an in listinct spot on posterior femora darker ; the mouth parts are 

 also blackish ; thorax with very distinct margins, moderately convex, 

 very finely punctured ; scutellum small, smooth ; wings present ; elytra 

 much broader than thorax, with the shoulders well marked and the 

 sutural apical angles obtuse, finely punctured, the punctuation being 

 much more obsolete in some specimens than in others. L. 2-3 mm. 



Male with the first joint of the anterior tarsi dilated, and the last 

 ventral segment broadly foveolate, the fovea being impressed with a 

 smooth line in middle. 



On Senecio jarobaa (Rtgwort); common and generally distributed throughout the 

 greater part of the country. 



The colour of this species varies considerably, and is occasionally in 

 extreme specimens reddish-testaceous or dark reddish; these specimens 

 usually do duty for L. rutilus in our collections, from which species they 

 may be known by their distinctly finer punctuation ; the variety does 

 not appear to be named, and I would therefore propose to call it 

 v. rufesce.,s. 



It. rutilus, 111. Very closely allied to the preceding, but dis- 

 tinguished by its much stronger and more evident punctuation, which 

 on the elytra is disposed in striae near the base, and the longer and more 

 slender first joint of the posterior tarsi ; from all ordinary examples of 

 L. jacobcece it may be known by its deep reddish colour ; the specimens 

 I have seen are also rather smaller than is usually the case in the last- 

 named species; the food plant also appears to be different. L. 2~-3 mm. 



On Scrophularia aqualica ; rare ; the only specimens of the true T. rutila that I 

 have seen were taken by Mr. Moncreaff at Hayling Island, near Southsea ; it has also 

 been recorded from Weybridge and Hastings. 



Zi. ochroleucus, Marsh. This species may at once be known by 

 the very pale whitish testaceous colour of the upper side and the black 

 apex of the posterior femora ; the mouth is also black, and the apex of 

 antennas fuscous ; the breast is brownish ; the thorax is almost smooth ; 

 wings ample ; elytra much broader than thorax, with the shoulders well 

 marked, apex rounded, rather depressed on disc, very finely and closely 

 punctured; apical joints of tarsi and claws fuscous. L. 2-2j mm. 



Male with the last ventral segment of abdomen furnished with a 

 central furrow, which is dilated at apex into a triangular fovea. 



By sweeping herbage ; locally common ; Stephens records it as " extremely abundant 

 in several parts of the country in fields, especially where turnips are grown, in June 

 and July*;" Weybridge, Mickleham, Darenth Wood, Birch Wood, Horsell, Graves- 

 end, Sheernesn; Ditchingham, Suffolk; Wicken Fen ; Shipley, near Horsbam ; St. 

 Leonards ; Glanvilles Wootton ; Isle of Wight ; Devon ; Swnnsea ; Ticknall, near 

 Derby; Liverpool; Scotland, Edinburgh (Stephens) and Kircaldy (Power) ; Ireland, 

 near Dublin. 



