1906.] NATURAL SCIENCES OF PHILADELPHIA. 499 



fine erect bristles, about 25 of them, none long; three in front 

 and two rows each side behind, those on apical third longer and thicker 

 than others, but the last pair short. Venter smooth ; genital and anal 

 openings touching, the latter more elongate; a pair of short bristles just 

 behind anus, and a transverse, black ridge just before tip ; sternal plate 

 with a dark furrow each side. Legs slender; the joints nodose; I a 

 little longer than body, I^^ plainly longer, tarsi extremely slender; 

 femora I and II plainly larger than others; all with curved bristles, 

 mostly plumose, at least near tip, that from patellar joint of leg IV 

 extremely long, and plumose at tip, another very long, simple hair at 

 tip of tibia IV; but one claw. A short, sharp spine behind coxa I, a 

 larger one behind coxa II. 



Length .75 mm. 



Several specimens from Falls Church, Va., December. 



Nothrus taurinus n. sp. 



Dull brown, rather paler in middle of the abdomen. Cephalothorax 

 and abdomen roughened; a large curved process each side on tip of 

 cephalothorax, a pair of bristles from near middle, and an irregular 

 transverse ridge across base;pseudostigmatic organ short, and capitate. 

 Dorsum of abdomen depressed, margins raised, four long erect bristles 

 on each side, another more curved before tip, a straight one from each 

 apical corner, and a submedian pair of curved ones at tip, a basal sub- 

 median pair of shorter ones, and a longer humeral pair, all very stout. 

 Abdomen elongate, about twice as long as wide at base, only a little 

 wider at tip; genital and anal openings about equal in size, and touch- 

 ing; the latter much before tip, and behind it each side are a couple 

 of bristles. Legs short and heavy, all with a few curved hairs ; femora 

 broad at base ; leg IV not reaching tip of body. 



Length 1 mm. 



One specimen from Falls Chiu-ch, Va. 



Neoliodes floridensis n. sp. 



This species is similar in most respects to N. concentricus Say, but at 

 once separated therefrom by the fact that the basal median part of the 

 dorsum of the abdomen (on the fu-st turn) is separated from the sides 

 by a lateral ridge, and the enclosed space is densely granulate; in N. 

 concentricus this part is longitudinally striate, and there is no lateral 

 ridge. The apex of the abdomen above is not as high nor as pointed 

 as in N. concentricus. The legs are somewhat shorter, but the most 

 distinct difference in the legs is that in this species there is a large lobe 

 below at apex of each femur, especially large on legs I and II; the tarsi 



