INSECTA MADERENSIA. 439 



added to their curiously concave, obtuse mandibles (the apex of which is broad and 

 cleft into large porrccted teeth, like those of a trident), and the extremely mem- 

 branous nature of their lower oral organs (in which indeed the ordinary robust- 

 ness is scarcely required, since they are protected by the somewhat produced 

 anterior region of the presternum), at once offer peculiarities exceedingly charac- 

 teristic. In the subpalpiform outer division of their maxiUse they agree with the 

 greater portion of this section of the Fhytophaga. 



333. Cassida uebulosa. 

 C. oblongo-ovata dilute flavescens, infra (limbo pallido excepto) nigi-a, prothoracis angulis posticis 



rotundatis, elytris pvofunde punctato-striatis nigro irroratis, interstitiis elevatis. 

 Long. Corp. lin. 3^^. 



Cassida nehulosa, Linn. Fna Suec. 468 (1761). 



et ajjiiis, Fab. Iliit. S^st. i. 293 (1792). 



, GyU. Ins. Suec. iii. 442 (1813). 



, Stepb. m. Brit. Ent. iv. 3G7 (1831). 



Habitat Maderam, rarissima; exemplar unicum in museo Loweano, a Dom. Heinecken prope urbem 

 Funchalensem olim captum, vidi. 



C. oblong-ovate, nearly opake, and of a dull brownish-yellow. Body beneath black ; with the excep- 

 tion of its margin, which is paler. Prothorax and elytra with the sides much expanded horizon- 

 tally, and slightly recurved ; the former coarsely punctui-ed, with its posterior angles rounded, 

 and with slight indications of a dorsal line,— especially behind, where there is a somewhat raised 

 tubercle on either side of it. Elytra shghtly convex, and with their humeral angles porrected 

 and greatly rounded ; besprinkled with small, irregular, black spots, or broken Unes ; deeply 

 punctate-striated (the punctures being large and ocellate) ; and with the interstices, particularly 

 towards the suture, raised. Antenna and legs a little paler,— the apex of the former being some- 

 what dusky. 



An insect wHch is found throughout most parts of Europe, and in certain 

 districts rather abundantly. In Madeira it would appear to be exceedingly rare, 

 the only specimen which has come under my observation being a very old one, 

 from the collection of the late Dr. Heinecken, and presented to me by the Rev. 

 R. T. Lowe. It differs from its more northern representatives in being somewhat 

 paler, and in having the two rounded elevations, which are but just perceptible on 

 the hinder portion of the prothoracic disk in the ordinary examples, tolerably 

 distinct. In every other respect it coincides with the usual type. 



334. Cassida hemisphserica. 

 C. brevis rotundato-ovata flavo-viridis convexa, capite pectoreque nigris, prothoracia anguhs posticis 



acutis, elytris confertissime punctulatis. 

 Long. corp. lin. 2^. 



