7(5 



THOS. I,. CASEY, 



tli;iii tlie (itliers, stnumly citriiiiitod, last Hmr joints coiiipressnd successively to a 

 !;roaler ilesreo. Joints of tarsi liocreiisiiii,' gradually in size. 



But one s])ocic.s lias been discovered tliiis far in our territory. 



I. S. linenriN Lee. —Color paler than that of the preceilinc; species, liody 

 less depressed, siil)-cylinilrical. Head suh-rpiadrate with a dt-eiily excavatoil median 

 furrow extendini; from the front nearly to the posterior margin. Two small lat- 

 eral furrows orii^inatini; at the front, extend hack a short diatanee, diverging 

 slightly froiri the median line. Elytra deeply striate, with rows of very minute 

 punctures in addition. Prolhorax |>unctured except on a narrow median line. 

 Head punctured and margined with an elevated btu'der. fjength li.a mm. 



Texas. Plate TV. Fi-. 11. 



Quite Hire in collections. 



FRONTOMIK L.'tr. 



Jugular pieces long and very acute, curving outward at their extremities. Men- 

 tum hroatlly emarginate in front. Ligula elongated and entire. Mandihies nearly 

 as long as the head, very hroad and robust, ilenticulated internally. Antennae 

 about as long as the lu^ad and mandildes together: first Joint large, seconil smaller, 

 sub-cylindrical: thinl elongated : fourth to eighth globular: three last enlarged, 

 fi>rming a loose club, whi<'h is horissiite with long hairs. Eyes small, salient, 

 prolhorax suli-quadrate, very lightly and spari-ely ])un<'tured. Elytra narrowing 

 slightly posteri(U'ly, striated with rows of foveate punctures, shining. First joint 

 of tarsi very small, next three almost eqiuil in size; lifth very long. 



The only species known to tis i.s the followino; : 



1. P. americailU Or. — Light castaneous; body depressed, elongated, 

 broadest across the eyes. Elytra glabrous. Length 4.S— (5.0 mm. 



(>.. Nev.: Cal. Plate' IV. V\<^. 12. 



Differs from the European )ii(ni(/if/ii/iiriii in the followinnj particulars : 



The mandibles are much longer, and tin; anteiiniic are less roliust than 

 in that species; the color of our species is deeper, smd tlie prothorax has 

 a well-marked median furrow which does not appear — from the single 

 specimen which I have had under examination — to be developed in the 

 first. But it is in thejugtihir pii'ces that the greatest diff"erenc(! exists, 

 those of our .species being very long, slender, and attaining the tips of 

 the mandibles, while in the Kuropean species these plates do not approach 

 the tips within one-fourth of their length. 



Howtiver, with till these differences, which nuist be admitted to be of 

 minor value. I can only regard (niirrirniKi ,> a variety of minnUhiilnris, 

 [f the genus contained a liirge nundier of species, the above differences 

 might be regarded as specific, but in the present cii.se tiiere is but one 

 form known, and as the tv o races resemble each other so closely we are 

 warranted in a.ssuming iiiat these differences are only those due to local 

 influence. 



