AMERICAN COLEOrTERA. 283 



This species bears considerable resemblance to sitbafriatus and the 

 male characters are the only reliable means of separation. 

 Occurs in Colorado and British Columbia, four specimens. 



ANOGDUS Lee. 



Head short, not prolonged in front of the eyes, clypeus short, broadly einar- 

 ginate, labrum short, feebly emarginate. Mandibles feebly prominent, dentate 

 on the inner margin. Maxillary palpi short, lastjoint cylindrical slightly acute 

 at tip. Eyes ronnd moderately prominent. Antennse ten-jointed arising under 

 a slight frontal margin, first joint short, stout, second a little more slender and 

 nearly as long, third less stout and shorter than second, 4 — 6 short gradually 

 broader, 7 — 10 forming a very abrupt oblong club a little longer than the 

 preceding joints, 7 — 8 — 9 short, transverse, more than twice as wide as long, 

 ten narrower, short, truncate at tip; head beneath without antennal grooves. 

 Prosternum in front of coxae short, the cavities transverse and closed behind. 

 Mesosternum separating the anterior coxse, vertical between them and finely 

 carinate. Metasternum rather short, the side pieces narrowly visible, pos- 

 terior coxse contiguous. Abdomen with six segments. Legs short, stout, tibise 

 spinulose externally. Tarsi slender with joints 5 — 5 — 4. Body short, stout, 

 not contractile. 



This genus is closely allied to Anisotoma and bears to it the same 

 relation on one side that Cyrtusa does on the other. After a careful 

 manipulation of the unique before me I am unable to find more than 

 ten joints to the antennae, the eighth joint which is so feebly visible 

 in Cyrtusa appears to be entirely wanting here. 



A. capitatus Lee. — Rather broadly oval, brownish, ferruginous, moder- 

 ately shining. Head rather coarsely punctate. Thorax short transverse, nearly 

 three times as wide as long, slightly narrowed in front, apex emarginate, sides 

 and base arcuate, hind angles broadly rounded, surface rather coarsely punc- 

 tate, sparsely on the disc, more densely at the sides. Elytra a little wider than 

 the thorax and very little longer than wide, oval, convex, surface with eight 

 rather deeply impressed strise, the striae crenately punctured, intervals convex 

 and punctulate. Body beneath and femora sparsely punctate. Length .10 inch • 

 2.5 mm. (PI. VI, fig. 22). 



The unique specimen, from Florida, before me appears to be a 

 female, its anterior tarsi are however wanting but the femora present 

 no sexual characters. The minute tooth observed on the hind thio'hs 

 (Proc. Acad. 1866, p. 369), proves to be a deception. 



ANISOTOMA Illig. 

 Head short, not prolonged in front of the eyes, without antennal grooves 

 beneath, clypeus truncate. Labrum small, emarginate or sub-bilobed. Mandi- 

 bles short robust, simple at tip, dentate at middle (except in ecarinata). Eyes 

 round feeblv prominent. Antennae short or moderate in length, eleven-jointed, 

 first joint robust, second nearly as stout but shorter, third more slender and 

 longer (except in alternata), 4 — 6 short gradually broader, 7-11 forming an 

 abrupt oblong club usually as long as the preceding portion of the antennae. 



