28 PECKHAM. [Vol. 3. 



Tlie spinnerets are white, each with a delicate, black line on 

 the outer side. The palpi and legs are yellow, barred with 

 black or dark brown. 



We have two males and one female from the eastern part 

 of Guatemala, and one female from Chapoda, Brazil, in the 

 Smith Collection. 



HELORUS, GEN. NOV. 



The cephalothorax is high. The cephalic part is inclined 

 forward, and the thoracic falls in a steep slant from the dorsal 

 eyes. The sides usually widen out from above below-, especi- 

 ally in the thoracic part. Tlie widest point is at the dorsal 

 eyes or behind them. The width of the cephalothorax is about 

 three-fourths of its length. The quadrangle of the eyes is 

 wider in front than behind, is from one-fourth to one-third 

 wider than long and occupies from two-fifths to three-fifths of 

 the cephalothorax. The first row of eyes is straight or curved 

 upward. The middle eyes are less than twice as large as the 

 lateral and are close together, while the lateral are usually a lit- 

 tle removed from them. The second row of eyes is half-way 

 between the first and the third or is nearer the third than the 

 first. The third row is usually narrower than the cephalo- 

 thorax at that place. 



This genus at once recalls Amycus, but the cephalothorax 

 is not so high, and the eyes of the first row are more nearly of 

 a size. It is still closer to Chapoda. 



Mandibular is, the type, and extensus are much more closely 

 allied to each other than to flavens. This species differs from the 

 others in the shorter cephalic part, in the bulging out of the 

 thoracic part far behind the dorsal eyes, in the short talces and 

 in the vertical sides of the cephalic part, as well as in the fact 

 that the palpi and the first two pairs of legs have their insertion 

 much further back on the cephalothorax. It might have 

 served as the type of a new genus, but as we had only a male 

 this seemed inexpedient. It agrees with the other species in 

 the prominent cephalic plate and in the covering of iridescent 

 scales on the abdomen. 



