clxxx Descriptions of two New Longicorns. 



Antennae closely approximate ; prothorax with nearly parallel sides, but armed 

 with two large dichotomous tubers on its back, and between these having a mesial lon- 

 gitudinal depression ; elytra broad at the base, gradually narrowing to the apex, where 

 each terminates in a very oblique truncature and an obtuse exterior point, at the shoul- 

 ders they have a bifid tooth, and on the centre of each, near the base, is a prominent, 

 erect, pointed tuber; about the base they are nearly covered with deep and almost con- 

 fluent punctures, but these are smaller, shallower, and more scattered towards the apex. 

 The colour of the insect is black, with the exception of the costa of the elytra, which 

 is clear brown ; on the head, prothorax, abdomen and legs is a gray pilosity, and the 

 elytra are sprinkled with small white downy spots. 



Hab. — New Holland. Described from a specimen in the cabinet of the British 

 Museum. 



MONOHAMMUS HELENOK. 



Fuscus, vitta faciei utrinque, altera gence utriusque, altera prothoracis utrinque flaves-** 

 centibus, elytrorum maculis numerosis lanuginoso-jlavis. (Corp. long. 1 unc. 

 Elytrorum lat. max. *4 unc.) 



One antenna is entirely wanting, of the other, 6 joints remain, and these united are 

 about equal in length to the body, the basal joint is moderately long and stout, the 

 second small and very short, and both these are uniformly brown, the third is as long 

 as the first and second together, brown at the apex and fulvous at the base, the fourth 

 is shorter than the third, the fifth than the fourth, and the sixth is scarcely half the 

 length of the fifth, all these have the same distribution of colour as the third. The 

 entire insect is velvety black, adorned with the yellow velvety markings described be- 

 low ; from the centre of the anterior margin of each eye an oblique line descends to the 

 lower extremity of the cheek, and a second, shorter and parallel with this, descends 

 from near the inferior extremity of each eye ; a slender silvery line crosses the clypeus 

 just above the labrum ; two short lines originate side by side between the bases of the 

 antennae, and, immediately separating, terminate upon the epicranium ; on each side 

 of the pronotum a vitta traverses its entire length, and at its anterior extremity is in- 

 creased by a concolorous spot on the head, immediately behind the eye ; the anterior 

 margin of the prosternum is yellow, and its disk clothed with pale down : the apex of 

 the scutellum is yellow, which colour is prolonged towards the prothorax into an acute 

 point : on each elytron there are about one hundred and twenty roundish yellow spots, 

 infinitely varied in size, the larger ones being arranged in two series on each elytron, 

 the first of these is somewhat sinuous, and composed of six spots, commencing at the 

 prothoracic vitta, and terminating in the apical area, the second is costal, and com- 

 posed of four spots. 



Hab. — The East Indies or East-Indian Islands. In the cabinet of the Zoological 

 Society ; presented by the late Sir Stamford Raffles. 



Edward Newman. 



EDWARD NEWMAN, PRINTER, DEVONSHIRE STREET, BISIIOPSGATE. 



