No. 1.] ATTID.E OF CENTRAL AMERICA. 57 



is narrowest in front. The quadrangle of tlie eyes is a little 

 wider in front than behind, and is one-fourth wider than long. 

 The anterior ej'es forma very slightly curved row; the middle 

 eyes are close together, the lateral a little separated from them. 

 The third row is just about as wide as the cephalothorax at 

 that place. The clypeus is about one-fourth as high as the 

 middle anterior eyes and the falces are vertical, moderately 

 long, and not very stout. 



The cephalothorax has the cephalic part black, and the 

 sides and thoracic part brown, with a central white band. 

 The abdomen has a white band down the middle, on the edges 

 of which are three pairs of white spots, and a white band on 

 each side at the front end. On either side of the central 

 band the color is blackish, and the outer sides are brown. 

 The whole abdomen is covered with scanty gray liairs. The 

 falces are brown, the palpi yellow with gray hairs, the legs 

 brown with black spines and gray hairs, the first pair being 

 the darkest. 



We have a single female from the eastern part of Guate- 

 mala. 



AVITUS, GEN. NOV. 



The cephalothorax is moderately high and is one-third 

 longer than wide. The cephalic part is slightly inclined. The 

 thoracic falls very gradually through one-half of its length, 

 and then more steeply. The sides widen out plainly from the 

 first row of eyes, reaching the widest point just behind the 

 dorsal eyes, and then contracting again. They are nowhere 

 vertical, spreading out from above throughout their length, 

 most widely at the widest point of the cephalothorax. The 

 quadrangle of the eyes is slightly wider behind than in front, 

 is one-fourth wider than long, and occupies two-fifths of the 

 cephalothorax. The anterior eyes are in a slightly curved row, 

 the lateral being half as large as the middle and separated 

 from them, while the middle eyes are close together. The 

 second row is about twice as far from the third as from the first 



