TEIGONOPELTASTES. 379 



3. Trigonopeltastes simplex. 



Oblongus, niger, elytris rufescenti-fulvis, sutura (et interdum dimidio posteriore) nigra, lateribus medio lineola 

 transversa vix perspicua albida; pygidio convexo, nigro, striolato, polito, utrinque macula triangulari 

 albo-pubescente. Subtus niger, politus, ventre utrinque maculis transversis segmentoque 5° fere toto, 

 pectore et femoribus sparsim, albido-pubescentibus. Caput cum clypeo toto acute strigulosum ; tborace 

 paullo ante medium obtuse dilatato, angulis posticis rectis, disco triangulo profunde inciso (haud 

 pubescente), toto sat crebre et grosse punctato, angulis anticis pubescentibus. Elytra disco planata, striis 

 subtilissimis totis fere rectis. Tibiae anticae tridentatse. 



Long. 8-8 1 millim. $ . 



Hab. Guatemala, San Geronimo (Champion). Two female examples only. 



This species is distinguished from its allies by the absence of white spots near the 

 suture or on the scutellum, and the simple coloration of the elytra, without trace of the 

 usual black lines and curves. There is a faint trace of the usual short lateral trans- 

 verse white lineola on the elytra. The thorax in both examples is possibly abraded, 

 and the yellow pubescence in the triangle-shaped sulci consequently wanting. 



4. Trigonopeltastes geometricus. 



Trigonopeltastes geometricus, Schaum, in Germans Zeitschr. iii. p. 284 1 ; Burm. Gen. Ins. no. 34, 

 fig. 2 ( ? ) ; Handb. der Ent. iii. p. 750 3 . 



Hab. Mexico 1 2 , Cordova (Salle), Jalapa, Almolonga (Edge), Teapa in Tabasco 

 (H. H. Smith); Guatemala, San Geronimo (Champion). 



The markings of the elytra, well described by Burmeister, are tolerably constant, the 

 most characteristic being a black line arising from a broad spot behind the shoulder, 

 which curves towards the narrow suturai vitta (with which it is connected by a short 

 transverse line), and continuing thence down the disc nearly parallel to the suture ends 

 in a large apical spot. The general form is shorter than in the allied species, ovate rather 

 than oblong. The thorax is correspondingly shorter, more angularly dilated in the 

 middle, and with the sides more or less sinuated to the hind angles, which are rectangular 

 or acute ; the yellow triangular signature of the disc is short, and the grooves in which 

 it lies are strongly impressed, hut not quite so strongly and broadly as in T. archimedes 

 and T. simplex, and in the S. Brazilian T. triangulum. The sexes closely agree, and I 

 do not find that the female is differently coloured to the male or smaller than it, as stated 

 by Burmeister, who must have had before him a variety in describing the female. The 

 typical state varies slightly in its elytral markings, the short transverse lineole being 

 sometimes absent, and in other cases the longitudinal curved line interrupted ; the 

 following recede further from the type-form : — 



Yar. T. nigrinus. Niger, opacus, elytris utrinque versus bumeros macula rotunda aurantiaca. Thorax angustior, 

 triangulo profundius impresso ; pygidium flavo-pubescens, vitta angusta integra; venter segmentis l°-4 m 

 5°que dimidio medio tantum flavo-tomentosis, lateribus late et 6° glabris nitidis. 



Long. 7-g- millim. <$ ■ 



Hab. Mexico, Cordova (Salle). One example. 



SCO 2 



