180 SCAPHIDITDZ. 
Hab. Mexico, Toluca (Hé6ge). 
Differs from 7. bifasciatum and T. gammaroides in its intermediate size and deep 
sculpture. 
3. Toxidium gammaroides, (Tab. IV. fig. 15.) 
Toxidium gammaroides, Lec. Proc. Acad. Phil. 1860, p. 324°. 
Compressum, angustum, arcuate convexum, nitidissimum, fere impunctatum, aterrimum ; capite sat magno; 
oculis modicis, haud prominentibus ; pronoto magno, ad basin latissimo, punctis exiguis remote impresso, 
superficie glabra, nitidissima, lateribus marginatis, leviter rotundatis, margine basali haud sinuata, scutel- 
lum versus producta, angulis acutis; elytris modicis, quam caput atque pronotum parum longioribus, vix 
latioribus, ad humeros latissimis, fere glabris, nitidissimis, punctis exiguis remote impressis, lateribus 
leviter marginatis, vix rotundatis, apicibus latis, fere rectis, dilutioribus ; abdomine parum exserto, nigro ; 
pedibus atque antennis modicis, rufo-piceis. Long. corp. 2 millim.; lat. 0-80 millim. 
Body compressed, narrow, arcuately convex, very shining, almost impunctate, deep black. Head rather 
large; eyes moderate, not prominent; antenne moderate, rufo-piceous. Thorax large, widest at the 
base, remotely marked with exceedingly minute punctures, smooth and very shining ; sides margined and 
faintly rounded; basal margin not sinuated, produced towards the scutellum, with the angles acute. 
Scutellum moderate, triangular, partly exposed. Hlytra moderate, rather longer but scarcely broader 
than the head and thorax, widest at the shoulders, nearly smooth and very shining, remotely marked 
with very minute punctures ; sides slightly margined, scarcely rounded ; extremities broad, nearly straight, 
and pale. Abdomen not much exposed, black. Legs moderate, rufo-piceous. Underparts black, with 
several large and deep punctures on the metasternum. 
Hab. Nort America, Southern and Western States '—Mexico, Jalapa (Hége) ; 
GuaTEMALA, Zapote (Champion). 
Differs from TZ. bifasciatum in its smaller size, shorter form, shorter legs and 
antenne, and uniform black colour. 
4, Toxidium ovatum, sp. n. 
Anguste ovatum, arcuate convexum, nitidissimum, fere impunctatum, aterrimum ; capite magno, lato; oculis 
magnis, sat prominentibus; pronoto magno, lato, ad basin latissimo, antice capite angustiore, glabro, 
nitidissimo, lateribus leviter marginatis et leviter rotundatis, margine basali haud sinuata, scutellum 
versus producta, angulis acutis; elytris quam caput atque pronotum sesqui-longioribus, vix latioribus, 
prope humeros latissimis, superficie sat inwquali, glabra, nitidissima, stria suturali distincta, lateribus 
leviter marginatis, vix rotundatis, apicibus sat latis, modice rotundatis, rufo-piceis ; abdomine nigro, vix 
exserto; pedibus brevibus, rufo-piceis ; antennis robustis, sat brevibus, moniliformibus, nitidis, rufes- 
centibus. Long. corp. 1°50 millim.; lat. 0°80 millim. 
Body narrowly ovate, arcuately convex, very shining, nearly impunctate, deep black. Head large and broad ; 
eyes large and rather prominent; antenne rather short, robust, moniliform, and very shining, rufescent. 
Thorax large and broad, widest at the base, in front narrower than the head, smooth and very shining ; 
sides slightly margined and faintly rounded ; basal margin not sinuated, produced towards the scutellum, 
with the angles acute. Scutellum small, triangular, partly exposed. lytra one half longer but scarcely 
broader than the head and thorax, widest near the shoulders, with the surface rather uneven, smooth, and 
very shining; sutural stria distinct ; sides slightly margined, scarcely rounded; extremities rather 
broad, moderately rounded, rufo-piceous. Abdomen black, not much exserted. Legs short, rufo-piceous. 
Underparts black. 
Hab. Guatemata, Totonicapam 10,000 feet (Champion). 
