254 Mr, J. S. Baly's Descriptions of 



indistinct ridge, the anterior edge of which is unidentate ; pos- 

 terior tibiae arcuate, the apex obsoletely mucronate. 



Hab. West Coast of Africa. In Major Parry's and my own 

 collections. 



At once separated from S. Murrayi, next to which species it 

 ought to stand, by the peculiar form of the anterior angles of the 

 thorax, and the acutely dentate mesofemora. 



Genus Cheiloxena. (Details, PI. XIV.) 



Antenncs paullura intra marginem interiorem oculorum insertse, 

 filiformes, robustse, articulo primo brevi, incrassato, secundo bre- 

 vissimo, tertio elongato, caeteris fere sequalibus. 



Mandibulce (fig. h) prominentes, robustae, apice bidentatae, dextrd 

 intus dentata. 



Labrum (fig. e) transversum, antice sub-sinuatum. 



Epist07)ia (fig. c) facie separata, hujus margine inferior! (fig. d) 

 fere occultato, apice membranacea. 



Palpi (figs.y, g) articulo ultimo obovato, apice truncato. 



Mentum (fig. g) transversum, concavum. 



Labium (fig. g) corneum, obtusum. 



Prostennim distinctum, postice ampliatum. 



i^apiit (fig. a) perpendiculare, faciei margine inferiori valde 

 emarginata, oculis rotundato-ovatis, intus vix sinuatis. 



Thorax (fig. e) sub-cylindricus, basi et apice paullo angustatus, 

 iateribus dentatis. 



Scutellam sub-trigonatum, apice obtusum. 



Elytra thorace multo latiora, oblonga, parallela, apice ro- 

 itundata, convexa, humeris lateralibus prominulis. 



Pedes raodice robusti, mediocres ; coxis quatuor anticis sub- 

 conicis, femoribus vix incrassatis, inermibns, posticis (fig. j) 

 icseteris non crassioribus ; tarsis (fig. h) articulis sub-trigonatis, 

 inter se latitudine aequalibus, tertio apice leviter emarginato, 

 uno-ue hoc duplo longiori, unguiculis dente brevi armatis. 



Abdomen (fig. k) segmentis intermediis angustatis. 



Cor2ms elongato-oblongum, convexum. 



Type Cheiloxena Westwoodii, Baly. 



This singular genus is remarkable for the possession of a free 

 epistoma, being separated by this peculiarity from the other 

 known phytophagous genera, in all of which the same part is 

 closely united in a single piece with thS face. In Cheiloxena the 

 epistoma is attached by its base to the inner surface of the head, 

 being more or less concealed (when viewed from above) by the 



