LEPTOSTYLUS. 151 
and elytra; the nearly vertical epipleure are in both bounded by an indistinct carina. 
The more prominent and acute lateral tubercle of the thorax and the more obtuse 
apices of the elytra are the only structural points of difference between L. obliquatus 
and L. levicauda. 
19. Leptostylus triangulifer. (Tab. XI. fig. 20.) 
Leptostylus triangulifer, Bates, Trans. Ent. Soc. 1872, p. 211. 
Hab. Nicaraeva, Chontales (Belt). 
20. Leptostylus pygialis. 
Leptostylus pygialis, Bates, Trans. Ent. Soc. 1872, p. 212. 
Hab. Nicaracua, Chontales (Belt). 
21. Leptostylus cristulatus. 
Leptostylus cristulatus, Bates, Trans. Ent. Soc. 1872, p. 213. 
Hab. Nicaragua, Chontales (Belt). 
22. Leptostylus leucopygus. 
Leptostylus leucopygus, Bates, Trans. Ent. Soc. 1872, p. 212. 
Hab. Nicaraava, Chontales (Belt). 
23. Leptostylus orbiculus. 
L. lewcopygo simillimus, sed brevior, magis orbicularis, oculis parvis scapoque longiore et graciliore : brevissime 
ovatus, fuligineo-fuscus, elytris apice late griseis; fronte verticali fere plana, oculis parvis ; thorace parvo, 
antice gradatim angustato, tuberculis lateralibus nullis, dorsalibus tribus, maculis tribus fulvis in trian- 
gulum prope scutellum dispositis ; elytris preecipue postice convexis, lateribus ante apicem sinuatis, supra 
punctato-striatis, interstitiis alternis seriatim parce fasciculatis, fasciculo centro-basali elevato; antennis 
fuscis, articulis 3°-11™ basi (5° toto) griseis, scapo articuloque tertio curvatis, illo gracili valde elongato ; 
tibiis medio, tarsis articulis 3° et 4° pallidis. 
Long. 2 lin. 
Hab. Mexico, Cordova (Sallé); Nicaragua, Chontales (Belt). 
The lower lobe of the eyes is smaller and much more finely granulated in this little 
species than in L. leucopygus ; and the antennal scape is distinctly longer, reaching the 
hind margin of the thorax ; on the other hand it recedes less than that species from the 
typical forms of the genus in the sternal structure, the prosternum being distinctly 
broader and nearly as broad as the mesosternum, the contrary being the case in 
L. lewcopygus. In another member of this group of small ovate species, viz. L. ovalis, 
the pro- and mesosterna are as large relatively as in L. transversus ; it would be difficult 
therefore to find definite generic characters by which to separate the group from 
Leptostylus, notwithstanding their differences of general form. 
