24 Trans. Acad. Sci. of St. Louis. 



proximate well behind tiie middle; lobes of the ligula rounded, sepa- 

 rate, coriaceous, their basal parts corneous as usual; mentum large, 

 trapezoidal, obliquely tumid at each side, coriaceous in less than apical 

 half; prothorax oblong, larger than in Gastrolobhnn ; elytra parallel, 

 generally longer and wider than the prothorax; abdomen as wide as the 

 elytra or nearly so; legs moderately long and slender, the tibiae not 

 strongly spiculose, the hind tarsi rather long, with the basil joint much 

 longer than the second but not as long as the next two combined and 

 but little longer than the fifth. Male without modification of the sub- 



basal ventrals. Temperate North America Hesperobiam 



Antennal joints compressed and constricted at base; elytra! suture not 

 beaded. Body stout, parallel, moderately convex, finely and densely 

 punctured; head well developed, as in Hesperobium throughout, except 

 that the median emargination of the labrum is larger, deeper and trian- 

 gular in form; submembranous lobes of the ligula .shorter, more diverg- 

 ing and quadrate; mentum very much shorter and mo e transverse, 

 unimpressed, with only the anterior margin coriaceous, the dividing line 

 being broadly sinuous; gular sutures, neck, prothorax and elytra simi- 

 lar; abdomen as wide as the elytra, parallel, the segments similarly 

 feebly impressed at base; legs much more elongate, moderately stout, 

 the basal joint of the hind tarsi as long as the next two combined and 



much longer than the filth. Southeastern Europe *Homoeotarsns 



6 Elytral suture not beaded, the surface not at all impressed along the 



suture; pleural fold beglnnin'.? well behind the humeri and not extending 

 to the hind anijles; legs moderate in length, rather stout, the tibiae 

 with numerous spicules among the setae; hind tarsi nearly as in Hespe- 

 robmm; prothorax oblong, the elytra longer and wider as in the preced- 

 ing genera; abdomen rather narrower than the elytra, the segments not 

 impressed; pronotum shining, with rather coarse, circular and very 

 shallow punctures separated by about their own widths, each puncture 

 composed of a small central ring bearing a hair, the ring surrounded by 

 a circle of minute punctules; elitradull in luster but wholly sculpture- 

 less, finely, clo-ely, irregularly punctured, each puncture consisting of 

 an asgregation of minute polished punctules; abdomen finely, not 

 densely punctulate, the surface mif^ro-reticulate, Brazil.. *Eucryptina 

 Elytral suture strongly beaded, the surface broadly impressed along the 

 beading; pleural fold beginning at basal third or fourth and extending 

 to about apical fourth of the elytra; punctures throughout sparse, 

 simple and impressed, those of the elytra very coarse; head narrow and 

 elongate, the sides feebly, evenly arcuate and strongly converging behind 

 the eyes to the neck, which is less thin half as wide as the head, the 

 basal angles obsolete; eyes normal; front not greatly reduced in width; 

 basal joint of the antennae very elongate; labrum rectilinearly and 

 transversely truncate, edentate, with a small parabolic median sinus 

 wider than deep; mandibles long, evenly arcuate, very slender and ex- 

 tremely gradually and finely aclculate toward tip, having within two 

 large acutely pointed teeth near the middle, the inner margin thence to 

 the base with a narrow membranous margin which is fimbriate with 

 short setae; membranous lobes of the ligula narrow, diverging, some- 

 what pointed; mentum short, coriaceous only along the anterior mar- 



