INSECTA MADERENSIA. 351 



272. Lixus vectiformis, Woll. 



L. angustus subopacus, pube cinere^ subtilissima adspersus et linea marginali albo-squamos& ornatns, 

 prothorace ruguloso-subpunctato, elytris leviter punctato-striatis, apice seorsum vix acuminatis 

 sed leviter siibrecurvo-dehiscentibus, rostro brevi ad basin ruguloso-subpunctato, antennis basi 

 rufo-ferrugineis. 



Long. Corp. lin. 4. 



Habitat in insula Portu Sancto, rarissimus ; a meipso Decembri mense a.d. 1848 semel tantum lectus. 



L. exceedingly narrow, and nearly opake, more evidently besprinkled with minute ashy pubescence 

 than the L. Chawneri ; but, like it, margined with a narrow whitish band. Head with the frontal 

 impression very distinct, and with the eyes rather prominent ; with the rostrum much shorter, 

 and proportionably thicker, than that of the last species, and somewhat rugosely punctured, or 

 variolose, at the base. Prothorax with the punctures not quite so well defined as those of the 

 last species, it being rather more variolose than punctured; and with the slightly-raised dorsal 

 line more evident. Elytra more lightly sculptured than in any of the other species, being more- 

 over punctate-striated rather than striate-punctate ; not more acuminated (each of them) at the 

 apex than those of the L. Chawneri, nevertheless with the appearance of being rather more so 

 on account of their being more divergent and just perceptibly recurved. Antenna a little shorter 

 than, but of the same colour as, those of the last species. 



The extremely narrow body of the present insect, in conjunction with its short 

 and thick rostrum, somewhat prominent eyes, and the subdivergent and svib- 

 recurved apices of its (lightly striated) elytra, will be quite sufficient whereby to 

 recognise it prima facie from the rest of the genus here described ; whilst from its 

 nearest ally, the L. Chawneri, its subsidiary distinctions may be readily gathered 

 from the above comparative diagnosis. It is hitherto unique, the only specimen 

 which I have seen having been captured by myself in Porto Santo, — in a small 

 barren ravine of the Campo de Baxo, diu'ing my residence in that island with the 

 Rev. W. J. Ai'mitage in December 1848. I may add that I lately forwarded it 

 (together with the previous two species) to Professor Bohemann of Stockholm, for 

 comparison vdth the Schonherrian collection, by whom it was pronounced as un- 

 questionably new. 



§ II. Elytra apice aut seorsum aut eonjunctim rotwndafa. 



273. Lixus angustatus. 



L. subuitidus, pube cinerea subtilissima adspersus et flavescenti-pollinosus, prothorace rugose scabroso- 

 punctato, elytris profunde striato-punctatis, apice eonjunctim rotundatis, rostro elongato inaequa- 

 liter punctatOj antennis longiusculis fusco-piceis. 



Long. Corp. lin. 6-8. 



