LITHONOMA, 273 



and thickly and coarsely punctate ; in front and at the base is a mar- 

 gin of fidvous colour, which extends nearly to the lateral angles ; the 

 margination also is broadly fulvous. Scutellum triangular, impunctate. 

 Kliftra broad, depressed, subparallel (the greatest breadth being post- 

 medial), rounded at the apex ; covered throughout with deep and 

 closely arranged punctures : from the humeral angles extend longi- 

 tudinally two slightly elevated but distinct ridges, becoming obsolete 

 as they approach the apex ; from the humeral angles also proceeds (in 

 a line which inclines rather more towards the suture) a broad flavo- 

 fulvous marking, which terminates abruptly before it reaches the 

 apex by being deflected at an oblique angle to the margination ; the 

 murgination itself also is broadly navo-fulvous (more broadly at 

 the apex). Antennce robust, filiform, short, black. Leys robust, 

 black. 



This species appears to differ from its congeners, L. cincta and 

 L. Andalusiaca, not only in the very distinct pattern of coloration, 

 but also structurally. In none of the examples of either of these 

 species before me can I detect a trace of any longitudinal carinations 

 on the elytra. 



Tangiers. In the collections of M. Chevrolat and the llev. H. 

 Clark. 



2. Lithonoma cincta, Fab. (TAB. IX. fig. 8.) 



Galleruca cincta, Fab. Syst. Ent. (1775), pars 2. p. 26. no. 62. 

 Chrysomela cincta, Fab. Spec. Insect. (1781), i. 132. 90. 



Fab. Mantissa (1787), i. 76. 119. 



Altica cincta, Oliv. Encycl. Meth. (1789), iv. 106. no. 12. 

 Galeruca margmella, Fab. Smt. Eleut. (1801), i. 496. no. 96. 

 Ilalticn marginella, Uliaer, Mag. (1807), vi. 55. 



marginella, Oliv. Ent. (1808), vi. 688. 34. tab. 2. fig. 34. 



Lithonoma marginella, Foudras, Hist, des Altisides (1860), 226. 



Allard, Ann. Soc. Ent. France (1860), p. 44. 



L. ovata, lata, subdepressa, subparallela, punctata, niyro-cyanea, 

 nitida; capite longitudinaliter foveolato,punctato ; thorate trans- 

 verso, lato, emarginato, punctato, antice et ad basin fulvo-notato, 

 etiamque fulvo-marginato ; elytris latis, depressis, subparallelis, 

 ad apicem rotundatis, punctatis, maculis quatuor fulvo-flavis, 

 ad marginemque flams ; antennis jiliformibus, robustis, nigris ; 

 pedibus nigro-cyaneis, tarsis fusco suffusis. 

 Long. corp. 2 lin., lat. 1 lin. 



Ovate, broad, subdepressed, subparaUel, punctate, of a dark blue 

 colour throughout, glabrous. Head short, transverse, slightly pro- 

 duced : at the base of the antennae is a medial longitudinal groove 

 extending upwards nearly to the base of the head ; on either side of 



