INSECTA MADERENSIA. 401 



(rarius obsoletis). Antenna mediocres aut breviuscula;, sat validfe; scapo subrecto, ad apicem 

 clavato ; funiculo 7-articulato, articiilis primo et secundo plus minusve obconicis, tertio ad sextum 

 brevibus transversis, septimo majore clavse arete adpresso; clava acuminata, quadri-articulata. 

 Pedes longiusculi : femoribus subclavatis : tihiis ad apicem internum in uncum dctlexum pro- 

 ductis. 



The Cleoni are insects of a considerable size, of a principally elongated-oblong 

 outline, and of either blotched or fasciated surfaces. They may be further recog- 

 nised by their subconical prothoras, by their apically-subdilated rostrum (and by 

 the form of its lateral scrobs, which is curved beneath, in a deep channel, almost 

 to the inferior margin of the eye), and by the joints of their funiculus, — the first 

 and second of which are (especially in the Madeiran representative) obconic, the 

 third to the sixth short and transverse, whilst the seventh is larger and closely 

 applied to the club. Their elytra, likemse, are usually sUghtly callose, or irre- 

 gularly subnodulose, towards their extremity (as in many of the species of Acalles) ; 

 and their tibiae are generally produced at the inner angle into a downwardly- 

 (Hi'ected spine. They reside for the most part in gravelly or barren localities, 

 more or less free from vegetation, — secreting themselves amongst stones during 

 the day, with which their obscurely daj^pled, or submaculated, bodies often display 

 a remarkable similarity as regards colouring ; particularly when clothed with dust, 

 which in such positions they are constantly liable to become. 



307. Cleonus plicatus. 



C. niger, squamvJia cinereo-brunneis suberetaceis undique densissime teetus, rostro sulcato, prothorace 

 costis plurimis undulatis instructo, elytris profunda striato-punctatis, faseiis duabus communibus 

 (una sc. antica luniformi sed in medio latissime interrupta, et altera subapicali transversa dentata 

 integra) vix pallidioribus ornatis. 



Long. Corp. lin. 6-7. 



Curculio plicatus, Oliv. i:nt. v. 83. 322. pi. 6. fig 65 (1807). 

 Rliytideres plicatus, Scliou. Cure. Disp. Meth. 150 (1826). 

 Cleonus plicatus, Schon. Oen. et Spec. Owrc. ii. 203 (1834). 

 Cleonis ■plicatus, Dej. Cat. (S'^-^^ edit.) 281 (1887). 



Habitat in Portu Sancto et Deserta Grandi, prsesertim inter lapides in rupium fissuris jacentes, hinc 

 inde non infrequens : in Madera milii non obvius. 



C. large, black, but most densely clothed with whitish-brown or brownish-white scales, of a somewhat 

 cretaceous, or chalky, nature, — and which are always of a paler colour beneath the insect than 

 on the upper side. Rostrum rather long, and deeply channeled longitudinally (both in the centre 

 and at the sides). Prothorasc subconical, and closely beset with longitudinal costse, which are 

 more or less undulated or waved, — especially the one on either side of the central canal. Elytra 

 a good deal broader than the prothorax, and nearly parallel ; deeply striate-punctate ; and with 

 two transverse fasci:e (one of which is situated on the anterior portion, and is large and luniform, 

 though broadly interrupted in the centre, thus constituting an oblique band on either elytron, — 



3 F 



