32 ROSENBERGIA MEGALOCEPHALA. 



Rosenberg ia megalocephala, v. d. Poll. 

 (Plate 1 , fig. 5 and 5a). 



Q. Castanea , omnino puhescentia alba tecta , densissime sub- 

 tus. — Caput insolita raagnitudine ; prothorax apice arcu 

 producto^ ante spinas laterales tratisversim valde incisus; scu- 

 tellum triangulare apice rotundato ; elytra apicem versus sub- 

 angustata^ humeris subrotundatis , consita granuUs magnis ^ 

 planis j nitidis, densissime ad humeros et sutnram versus ; sin- 

 gula elytra tribus costis tenuiter expressis, apice truncato, ad 

 suturam, subspinoso. 



Length 48 mra., breadth at the shoulders 17 mm. Length 

 of the antennae 57 mm. — Brown, entirely covered with a 

 close white pile , closest at the underside and at a narrow 

 stripe from the shoulders to the middle of the elytra; at 

 the upper side the brown colour is somewhat visible through 

 the white of the pubescence ; the tibiae outside and the 

 tarsi fuscous , the tarsi beset with some stiff black hairs. 



Head extraordinarily large , with the eyes and mandibles 

 large in proportion , the latter are black. — A few small 

 black granules along the upperlobes of the eyes. — The 

 3'"f' antennal joint not quite twice as long as the scape , and 

 one fourth longer than the 4*'^ joint, the 4^^ — 10^^ slightly 

 decreasing in length , the apical joint , which is suddenly 

 pointed at the tip , one third longer than the foregoing. 



Prothorax very prominent in front , rounded , deeply 

 transversely impressed at the forder part; on the disk be- 

 tween the lateral spines , which are strong and straight, an 

 irregular naked elevated transverse line, interrupted in the 

 middle , and a small longitudinal one in the middle , may be 

 seen , as well as some small granules on both sides of the 

 lower part. There are also a few granules below the la- 

 teral spines. — Scutellum triangular, broadly rounded at 

 the apex. 



The elytra are slightly attenuated towards the apex , with 

 a very small tooth at the shoulders , covered with nume- 

 rous , irregularly placed, shining, flattened granules , closest 



Notps from the Leyden TMnseiini , 'Vol. "VIII. 



