400 Mr. H. W. Bates's descriptions of 



$ Segmentum 5 ventrale, apicc fortiter emavgiuato. 



$ Segmenta 5 et G apice fortiter arcuata ; hoc medio sul- 

 cato. Long. 15-l.S ]in. $ , ^ . 



Distinguished by the amplitude of the elytra, and the dark 

 1)vassy-green or greenish-blue colour, and the rich violet hue of 

 its velutine patches and stripes. The antennaj in both sexes are 

 nearly three-fourths the length of the body. In one $ example 

 the scutellum is much shorter than in the others, the narrow 

 apical prolongation being wanting. The single $ example has 

 the central part of all the femora red. 



Cameroons River. 



SYNAPTOLA, u. gen. 



Gen. l^ldlematio affinis : difEert autennis $ corpore breviori- 

 bus, thoracistpie lateribus tumidis, haud acute spinosis. Femora 

 omnia subtus acute dentata ; 4 antica pedunculata. Scutellum 

 haud elongatum plerumque transverse rugulatum. Prosternum 

 apice tumidum interdum tuberculatum. Maudibula? clougataj 

 aut subrecta? ant apice suljiter incurva^. 



Si/naptola hrevicornis. 



Saturate viridi-cyanea, nitida ; antennis pedibusque nigris, 

 tarsis argenteo-pilosis : mandibular elongata;, apice iucurvo ex- 

 cepto recta?, sinistra intus flexuosa nee dentata : thorace quam in 

 Mecaspis angvistiori, antice et postice sulcato-constricto, lateribus 

 tuberculo valido, conico, obtuso: dorso elevato, sparsim transverse 

 strigoso (linea dorsali abbreviata lajvi) disco utriuque tenuiter 

 nigro-velutino : scutello apice obtuso, traa^sversim ruguloso : 

 elytris passim subtihter subcrebre punctatis : prosterno apice 

 valide tuberculato : antennis $ dimidio corporis vix longiorilnis, 

 articulo 3 valde elongato 4-10 serratis. Long. 13 lin. $ . 



9 Segmentum 5 ventrale apice emarginatum. 



Approaches nearer to Mecasjris than the rest of its congeners, 

 in the tuberculation of the prosternum and the transverse ruga^ 

 of the scutellum. It has, however, an acute tooth on the under- 

 side of the hind femora. 



Sierra Leone. 



Synaptola armipes. 



Violacea, antanuis et pedibus nigris, femoribus 4 anticis medio 

 rufis, tarsis argenteo-pilosis : thorace antice (haiid profunde) et 



