.7. H. Emerton — Neio England Attidcn. 235 



Icius hartii, new sp. 



Tlie name Icius Hartii was given this species by Mr. Peckbiam, 

 but not published. A specimen in the Museum of Comparative 

 Zoology in Cambridge, is named by Keyserling Icius tibialis 

 Koch. 



Of this species I have only one female from Medfoi'd, Mass. This 

 is Y"""^ long, cephalothorax 2"'™ long, and 1'""" wide. The cephalo- 

 thorax is straight at the sides, very little narrowed behind. The 

 abdomen is oval, a little pointed behind. PI. XVIII, fig. 5. The 

 length of the legs is 4, 1, 2, 3. The front legs are thickest, and the 

 tibia is more than twice as thick as that of the other legs. In the 

 male, fig. 5a, the front legs are longest and still more thickened than 

 in the female. The cephalothorax is dark brown, with gray hairs. 

 The abdomen has the middle dai*k and the border white ; the middle 

 area broken at the edges by three or four pairs of white spots. The 

 under side of the abdomen is light in the middle and black around 

 the edges up to the white border of the upper surface. The femora 

 are dark, except the third pair, which has light stripes. The other 

 joints are dark at the ends, and have dark longitudinal stripes. The 

 epigynum is small, and has two small openings directed forward 

 about their diameter apart. Fig. 5d. 



Some of the Wisconsin specimens which I have from Mr. Peck- 

 ham, are a little larger, and the dorsal markings are more broken by 

 oblique rows of white spots. The males have the abdomen shorter 

 and the front legs much longer and thicker. The mandibles are a 

 little longer than in the females. The male palpi are short and stout, 

 the patella and tibia are as short as wide, and the tibial hook is very 

 small and pointed, and directed downward. Fig. 5c. 



The palpal organ is long enough to nearly cover the tibia. The 

 tube is short and stout, and a little swelled at the base. Fig. 5h. 



Icms formicarius, n. sp. 



Length 5""". Cephalothorax and abdomen usually about the same 

 length. The general appearance is ant-like. The color is black with 

 dark bronze green scales, except a white line each side of the thorax, 

 and white stripes on the legs, two above and one beneath. One 

 specimen has a few white scales on the spinnerets. 



The cephalothorax is two-thirds as wide as long and the sides are 

 nearly straight and parallel. The abdomen is widest across the 

 hinder half and a little pointed behind. Both cej^halothorax and 

 abdomen are less flattened than in the other species. The legs are 



Trans. Gonw Acad., Vol. VIII. 32 Oct., 1891. 



