AMERICAN APTERA. 77 



C'arsibixIeN brovis nov. sp. — Length .4 mm. Dark red-brown, legs yel- 

 lowish ; tlie cephalothorax has an elevated plate-like ridge each side, and in the 

 middle a long triangular elevated region, the sides of which are concave ; four 

 short, stitf, curved bristles in front, and two much longer ones near the base, each 

 strongly curved toward the middle line; setae short, capitate. Abdomen a little 

 longer than broad, truncate at base and broadly rounded at tip ; strongly pitted, 

 or rather with a fine network of ridges, bearing about twenty-two stiff curved 

 bristles about as long as the setfB, two submedian rows of four each, a lateral row 

 of three, four on each posterior side, those near the base almost clavate, but those 

 on side? simple ; venter pitted like the dorsum ; the genital opening fully its 

 length in front of the larger anal ojjening; some short curved hairs on venter; 

 outlines of tlie co.\£e distinct and not forming a plate, roughened. Legs short, 

 joints slightly fusiform, with simple hairs, some near the tips quite long. 



Four sj)ecimeiis shaken from a dead fungus [Polypoyus) in ^Eay, 

 at Sea Cliff, N. Y. Related to C. (jnuiulatiis, but differs in having 

 simple hairs on the sides of the abdomen. 



C'arabo<le»i <lor!i»»lis nov. sp. — Length .45 mm. — Pale brownish yellow; 

 cei)lialothorax triangular, convex, with the outlines? of a broad T-mark ; two 

 short anterior bristles, a pair of longer, appressed, superior bristles; setse erect, 

 moderate, clavate. Abdomen once and one-half longer than broad, sides nearly 

 parallel, broadly rounded behind, not high, coarsely but evenly granulate above 

 and below; on dorsum each side a lateral and a submedian row of four large 

 stiff, curved, appressed, simple bristles, longer than the setfe ; genital opening 

 nearly once its length in front of the larger anal ojjening ; coxse separate. Legs 

 short and very stout, some joints as broad as long, with very short spine-like 

 bristles. 



Three specimens taken from the surface of a large boulder, in the 

 woods, near Sea Cliff, N. Y. General appearance of C. cqiicalis, 

 but differs in more slender form, stouter legs, etc. 



Nothrii«« (?) inariuus nov. sp. — Length .9 mm. Black, sides of abdomen 

 and tips of legs yellowish; cephalothorax triangular, the tip striated, a narrow 

 oblong bridge ajjpears to connect the base to the abdomen, its anterior tij) is ter- 

 minated by a ridge, each side of this on the cephalothorax there extends obliquely 

 backward a curved ridge ; apjiarently no setae. Abdomen elliptical, higli. smooth, 

 but not shining, with some scattered, very short, sometimes almost clavate hairs; 

 venter smooth, the genital opening distinctly separated from the larger anal 

 opening; coxaj marked by incomplete lines. Legs much shorter than the body, 

 witli stiff, pointed bristles, a few finer ones near tips of tarsi, three claws, the 

 middle one distinctly the largest, none of the joints of the legs swollen, except 

 femora i, which are somewhat stouter than the others. 



Not uncommon on rocks between tide-marks. Sea Cliff, N. Y. 

 This is not a Nothrus, but nearer to it than to any other genus known 

 to me. It will not agree witli Datrnvu)^. Most of the specimens are 

 young and have the abdomen transversely striate. 



TRANS. AM. ENT. SOC. XXIII. MARCH, 1896. 



