314 



CURCULIONID^E. 



867. Atlantis angustula. 

 Omias angustulus, Woll., Cat. Mad. Col 116 (1857). 



Habitat Maderenses (Mad.), sub lapidibus in graminosis apertis edi- 

 tioribus rarissima. 



The only two examples which I have yet seen of this Atlantis were 

 captured at a high elevation in Madeira proper beneath stones, on 

 the grassy slopes of the mountains above Funchal. The species is 

 closely allied to the ventrosa ; and although I believe it to be truly 

 distinct, its diagnosis can scarcely be regarded as satisfactorily esta- 

 blished until further material has been obtained for comparison. 



868. Atlantis ventrosa. 



Omias ventrosus, Woll, Ins. Mad. 382 (1854). 

 , Id., Cat. Mad. Col. 115 (1857). 



Habitat Maderenses (Mad.), sub lapidibus in graminosis apertis edi- 

 tioribus usque ad summos montes ascendens. 



A common insect in the higher elevations of Madeira proper 

 where it is found beneath stones on the grassy mountain-slopes 

 (principally above the sylvan districts), ascending to the very sum- 

 mits of the peaks. During the winter and spring it often occurs in 

 great profusion in company with the Atlantis vespertina, the Tarus 

 Maderce, the Antliicus Lubbockii, and certain other species of those 

 upland tracts. 



869. Atlantis aenescens. 



Omias senescens, Wott., Ins. Mad. 383 (1854). 

 , Id., Cat. Mad. Col. 115 (1857). 



Habitat Maderenses (Mad.), in locis similibus ac praecedens sed 

 multo rarior. 



Found in the higher altitudes of Madeira proper, in the same kind 

 of places as the last species indeed often in company with it, though 

 very much the rarer of the two. It is indeed most closely allied to the 

 ventrosa from which it principally differs in being (on the average) 

 a little smaller, as well as a little more shining and subsenescent, 

 in its prothorax (which is a trifle more cylindrical, or less rounded 

 at the sides) being somewhat more deeply and less densely punc- 

 tured, in its eyes being just perceptibly less prominent, and in its 

 limbs being usually rather more rufescent and robust. The erect 

 additional hairs, also, of its elytra are generally softer and longer 

 than those of the ventrosa. 



