Naserde* ] HETEROMERA. Gl 



N. melanura, Schmidt (lept unifies, Thuiib.). Elongate, subparallel, 

 reddish-testaceous, with the apex of elytrn, femora, breast and abdomen 

 black, rarely entirely fuscous ; head with eyes as broad as thorax, 

 antenna? long and slender ; thorax rather shining, cordiform, more so in 

 male than in female, in the former sex being furnished with a black spot 

 on each side, closely and distinctly punctured except on centre of disc : 

 scutellnni truncate behind ; elytra dull, parallel, very closely punctured, 

 clothed with short and fine yellowish pubescence, with traces of raised 

 lines. L. 7-12 mm. 



Male with the antenna? 12-jointed, the last ventral segment of 

 abdomen bilobed, and the centre of forehead and spots on thorax 

 fuscous. 



Female with the antenna 11-jointed, the last ventral segment of the 

 abdomen broadly and slightly emarginate, and the thorax unicolorous. 



On old posts and timber on the sea shore and near the mouths of large rivers ; 

 sometimes introduced further inland with timber ; rather common locally ; Surrey 

 Canal and Peckham (probably introduced with timber) ; Harwich; Doverscourt; 

 Walton. on-Nuze ; Chatham; Sheerness; Graveseud : Southend ; Deal; Dover; 

 Folkestone ; Hastings ; Portsmouth ; Southampton (about rotten railway sleepers) ; 

 Isle of Wight ; Devonshire, Plymouth, &c. ; banks of Humber and Severn; Borth, 

 Wales; Bridlington jetties; Manchester; Northumberland and Durham district, 

 Sunderland, and on the wing near South Shields; Ireland, Glasnevin Gardens, 

 Dublin. 



ISCHNO1VIERA, Steph. (Asclera, Schmidt ) 



The members of this genus may be known by the strongly securiform last 

 joint of the maxillary palpi, and the oval, almost round, eyes, which are 

 very slightly emarginate in front ; the antennae are filiform and elongate 

 with the third joint about twice as long as the second ; the head is 

 scarcely produced before antennae ; the thorax is rather strongly nar- 

 rowed at base, and the elytra are long and parallel-sided ; the legs are 

 long and the claws plainly toothed at base ; all the tibia? are armed with 

 two spurs at apex ; the genus contains about fifteen species, six of which 

 occur in Europe, and the remainder in Japan, North America, Cuba, the 

 Australian region, &c. ; two are inhabitants of Britain. 



The larva and pupa of I. ccerulea are described and figured by Seh'ddte (xi. pp. 545 

 547, t. xvi. 11, 12 and 13) ; the larva so closely resembles a rather small larva of 

 JV. melanura, that it might well be mistaken for it ; it appears chiefly to differ in 

 having the head rather narrower and more exserted, the prothorax more produced in 

 front, and the first three abdominal segments angled in middle of sides ; the remain- 

 ing segment?, also, are more conical ; the pupa differs considerably from that of 

 Nacerden, having the cephalic region rounded, and being thickly furnished with stout 

 setose " styli motorii," which are almost absent in the latter pupa ; the larva mines 

 dead wood. 



I. Tliorax green, or bluish-green, unicolorous with elytra . I. CCERULEA, L. 

 II. Thorax bright red or yellowish-red I. SAXGCIXICOJ.LIS, F. 



X. ccerulea, L. Elongate, parallel-sided, blue-green or blue, a little 

 shiny; head large, eyes large and prominent projecting beyond anterior 

 angles of thorax, front distinctly but rather finely and not very closely 



