LIXHONOMA. 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 

 marginatum also is broadly fulvous. Scutellv/m triangular, impunctate. 

 Elytra 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 

 margination itself also is broadly flavo-fulvous (more broadly at 

 the apex). Antenna robust, filiform, short, black. Legs robust, 

 black. 



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

 L. Anclalusiaca, 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 Rev. 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. Syst. Eleut. (1801), i. 496. no. 96. 

 Haltica margmella, Ittiger, Mag. (1807), vi. 55. 



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



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



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



L. ovctta, lata, subdepressa, subpardTlela, punctata, nigro-cyanea, 

 nitida ; capite longitudinaliter foveolato,punctato j thorace trans- 

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

 etiamque fulvo-marginato ; elytris Jatis, depressis, svbparallelis, 

 ad apicem rotundatis, punctatis, macidis quatuor fulvo-Jlavis, 

 ad marginemque flavis ; antennis filiformibus, robust is, nig r is ; 

 pedibus nigro-eyaneis, tarsi s fuseo suffusis. 



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



Ovate, broad, subdepressed, subparallel, 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 



