from the Island of St. Vincent. 3S|1 



Genus Xenoglceus (nov. gen.). 



Corpus sat parvum, subquadrato-oblongum, calvum : fronte ad 

 latera vix elevata, ad apicem truncata (baud emarginata) : prothorace 

 magno, transverso-quadrato, antice vix emarginato, angulis posticis 

 subrectis, margine postico obtuse sinuato ; prosterno carinato (carina 

 postice lobiformi abrupte terminata) : elytrorum angulis ipsis hume- 

 ralibus exstantibus acutis : scutello transverso-triangulari : alis obso- 

 letis. Antennce prothorace rix breviores, apicem versus moniliformes 

 leviter incrassatse, articulo 1™° paulo robusto breviusculo, 2^*° brevi, 

 3**° longiore, reliquis latitudine gradatim crescentibus (ultimo sub- 

 globoso). Labrum subquadratum, postice vix angustius, • antice 

 versus angulos anticos rotundatum, apice truncatum integrum cili« 

 atum. Mandibulce validse, cornese, subtriangulares, apice incurvse 

 acutse, intus in medio profunde fissse coriacese. Maxillce bilobae, 

 lobis valde pubescentibus : externa brevi, lato, apice longe setoso : 

 interna paulo breviore, intus longe setoso, ad apicem subito et valde 

 infiexo incrassato et ibidem tectiformi concavo obtuso (nee uncinato). 

 Palpi clavati : maxillares articulo 1™° sat parvo subgracili, 2"^° magno 

 crasso flexuoso apice clavato, 3**° paulo minore breviore, ultimo 

 maximd securiformi : labiales post ligulam inserti, articulo 1™° sat 

 parvo flexuoso, 2'^° multo crassiore subgloboso, ultimo hoc multo 

 majore subovali ad apicem internum oblique truncato. Mentum ro- 

 bustum, corneum, cordiformi-quadratum (i. e. basi facile attenuatum, 

 antice versus angulos anticos rotundatum et apice vix emarginatum). 

 Ligula subcornea, cordata (antice profunde biloba). Pedes brevius- 

 culi : tibiis ad apicem externum subtruncatis, ad internum calcaratis, 

 anticis apicem versus inflexis latiusculis : tarsis heteromeris, subtus 

 valde pubescentibus. 



A levos, alienigena, et yXotos, Isevis. 



In the extraordinary structure of its inner maxillary lobe — 

 the apical portion of which is suddenly bent inwards (at right 

 angles to the basal part), and, instead of being uncinate, is much 

 thickened, tectiform (or concave), and obtuse at its extremity, — 

 the present genus differs from every other one with which I am 

 acquainted. In its robust, subcorneous, cordate ligula, more- 

 over, and thick, subcordate mentum, as well as in the largely 

 developed securiform last joint of its maxillary palpi and the 

 acute and prominent humeral angles of its elytra, it is well cha- 

 racterized. With respect to its affinities, I will merely record 

 the opinion of Prof. Lacordaire, to whom I lately transmitted 

 for examination the unique specimen from which the aboye 

 diagnosis has been compiled. " Get insecte," says he, " m'est in- 

 connu. Quant k ses affinites, elles ne sont pas douteuses ; c'est 

 une Ulomide, ainsi que le prouvent la forme de sa tete, de sea 

 antennes, de ses pattes, et surtout ^absence de trochantins aux 

 branches interm^diaires. C'est un genre nouveau, qui repose 

 sur la forme g^nerale du corps plutot que sur aucun caractere 



17* 



