1873.1 31 



forming with the 10th and 11th joints an elongate slender clnb, the undilated part 

 of the 9th joint elongate and longer than the whole of the club ; they are of yellowish 

 colour, with the basal joint and the club blackened. Head nan'ower than the thorax, 

 clothed with fine, depressed, scale-like hairs ; it is a little transversely elevated on 

 each side in front of the insertion of the antennae, and has a fine, indistinct, elevated 

 line on each side, extending forwards from the inner margin of the eye. Thorax 

 transverse, quite as broad as the elytra, densely clothed with scales, those along the 

 middle generally paler than the rest ; a little roimded at the sides, the front 

 angles absent, the hind ones obtuse, the basal line not straight but curved towards 

 the scutellum in the middle. The elytra are about twice as long as the thorax ; each 

 has ten rows of punctures (including the marginal one), and a short accessory sutural 

 row at the base ; they are clothed with very fine scales, these are a little variegated, 

 and show some darjvcr obscure quadrate spots, most visible towards the extremity, 

 each has also an obscure elevation near the suture at the base. Under-side clothed 

 with pale grey, fine, hair-like scales. Legs pale greenish-yellow, sub-transparent, the 

 tarsi darker, especially towards the extremity. 



The males appear to vary greatly in the leugth of the antenna?, 

 and to present no external characters by ^vhich they can certainly be 

 distinguished from the other sex. 



Lawsonia variabilis, n. sp. 



Ohionga, sub-cylindrica, fusca, sqnamuJis griseis vestita, elytris 

 ante apicem circulo (vel lineis duahus ohJujuis pJus minusve dis- 

 tinct is) squamulorum iiigro-fuscorum ; pedihus sub-pellucidis,tarsis 

 fuscis ; aiitennarum cvrticuli noni parte gracili irevi, quam clava 

 Jiaud longiore. Long. corp. ^-2 lin., antennarum 1^-3 lin. 



This species differs from the L. longicornis by the structure of 

 the 9th joint of the antennae ; this difference might well be supposed 

 to be a sexual one, were it not that it is alvrays accompanied by a 

 difference in the colour and markings of the elytra, and also that I 

 have satisfied myself as to the existence of the tvro sexes in longicornis. 

 L. variahilis varies greatly in size, but the antennsB seem not to vary 

 in their development, except in ratio with the size of the insect. The 

 slender part of the 9th joint of the antennae is in this species so much 

 abbreviated, as not to be longer than the length of the club. The 

 elytra have towards the extremity two oblique dark marks ; these may 

 always be traced, though sometimes they are but little evident, and 

 sometimes the whole space between them is covered with dark scales, 

 80 that there is then near the extremity of the elytra a large common 

 circular blotch. The thorax appears to be always rather narrower, 

 and the elytra more convex and cylindrical than in longicornis, but iu 

 other respects the two insects seem quite similar. 



