eeotylim;. 249 



really five-jointed, the claw-joint having the basal node; distinct metasternal and 

 abdominal lines or carinae; and stout antennae, with a three-jointed club. The elytra 

 are faintly striated below the shoulders. 



We have two species to record from Central America. 



The toothed intermediate femora in the male of T. crotchi are very remarkable, 

 and the three ventral segments having each a pilose dot in the same sex are quite 

 analogous to the character figured for Crotchia proximo, (cf. Tab. I. fig. 24 a). I cannot 

 say whether these characters exist in the male of T. peruviana, Crotch. 



1. Thallisella crotchi. 



Oblonga, parum ovata, ferruginea, nitida ; thorace transverso-quadrato, parce punctulato, basi bifoveolato ; 



elytris punctato-striatis ; antennarum articulis quatuor ultimis clavam formantibus, nigris. 

 Mas, femoribus intermediis late dentatis, abdominis segmentis secundo, tertio et quarto, puncto piloso. Long. 



4^ millim. 



Hab. British Honduras, Belize (Blancaneaux) ; Panama, Bugaba, Volcan de 

 Chiriqui (Champion). 



This species is deep rusty-red in colour, with the punctures in the striae fuscous, but 

 only faintly so beneath the surface ; the striae are about eight in number, but towards 

 the side become short and confused ; the marginal stria is deep and sinuous, and the 

 margin much inflexed. The thorax is transverse, but not twice as wide as long; the 

 front angles are deflexed and acute, and the hinder angles also rather acute, the sides 

 being slightly sinuate ; upon the disc there is an irregular and indistinct M-like fuscous 

 mark. These fuscous markings, as well as those in the striae, are not always present. 

 The underside is smooth and shining, with a few scattered punctures upon the meta- 

 sternum. The prosternal process is raised at the sides, and has a rather obsolete carina 

 in the middle. 



Three examples from the Volcan de Chiriqui, which appear to be females, have 

 the apical joint of their antennae red, and the elytra rather more infuscate in the 

 middle than in the Bugaba specimens, with the base, shoulders, and apex lighter 

 ferruginous-red. 



v &* 



2. Thallisella conradti. 



Oblongo-elongata, nigra, nitida : antennis, pedibus elytrisque ad apicem picescentibus j capite crebre fortiter 

 punctato, fronte late subbiimpressa ; antennis capitis thoracisque longitudine, articulis secundo ad 

 octavum subfEqualibus, gradatim brevioribus^ haud elongatis, clava haud abrupta ; prothorace transverso- 

 quadrato, crebre ac distincte punctulato, basi profunde bifoveolato ; elytris sat profunde striato-punctatis, 

 interstitiis planis, glabris. Long. 4|-5 millim. 



Hah. Guatemala, Coban in Vera Paz (Conradt). 



If this insect had come from the eastern hemisphere, I should have unhesitatingly 

 placed it in the genus Thallis. The five-jointed tarsi (the claw-joint having a distinct 

 but small node at its base) will easily prevent its being confused with any species of 



biol. centr.-amer., Coleopt., Vol. VII., December 1898. 2 K* 



