70 PECKHAM. [Vol. 3. 



We have three males and numerous females from the east- 

 ern part of Guatemala. 



The two species of Cyrene here published bear a strong re- 

 semblance to each other and also to the type species decorata, 

 described in our paper, St. Vincent Attidse, Proc. Zool. Soc. 

 of London, Nov, 21, 1893. The red cephalic plate in decorata 

 as well as the difference in the pattern on the abdomen should 

 serve to distinguish it, even if it were found in the same locality 

 as the other species. 



HAMILLUS, GEN. NOV. 



The cephalothorax is rather high ; the highest place being 

 §,t the dorsal eyes, from which point the upper surface slopes 

 forward gently, and backward in a gradual rounded slope 

 through one-third of the thoracic part, and then more steeply 

 to the margin. The thoracic plate or upper surface of the 

 thoracic part just behind the dorsal eyes is crescent-shaped. 

 The cephalic part is sometimes a little wider, sometimes not quite 

 so wide, as the thoracic. The sides are vertical in the cephalic 

 part, the third row of eyes being as wide or nearly as wide as 

 the cephalothorax at that place. The anterior eyes are rather 

 large and a little separated and form a row which is straight or 

 curves downward, the tops of the middle being higher than the 

 tops of the lateral eyes. The middle are less than twice as large 

 as the lateral. The second row is nearer the third than the 

 first. The quadrangle of the eyes is wider in front than behind, 

 is one-third wider than long, and occupies almost half of the 

 cephalothorax. 



This genus finds its nearest allies in the Habrocestum 

 Group. It is close to Frostlieclina, but has the cephalothorax 

 wider at the dorsal eyes than in front, with the upper surface 

 sloping more steeply behind than in front of the dorsal eyes, 

 and the first row of eyes sometimes curved downward, in all of 

 which particulars it differs from that genus. The shape of the 

 cephalothorax and the curve of the first row of eyes also dis- 

 tinguishes it from AgobarduR, and from Sidma. 



