Dec., 1885.] history society of Wisconsin. 
65 
excepting the patella, tibia, and metatarsus of the first leg, which 
are brown. The coxse are pale; the clypeus, falces, mouthparts, 
sternum, and venter, dark brown. 
Habitat. Guatemala. 
Amycus C. K. 
C. Koch, in defining the genus Amycus , took for the type 
Salticus igneus Perty ( A . igneus Walck.) He stated that the eyes 
of the second row were placed half-way between the eyes of the 
third row and the anterior lateral eyes. "NV alckenaer, in desciib- 
ing this species, notes that the eyes of the second row are nearer 
the lateral than the dorsal eyes. Of the four species described 
by C. Koch under this genus, only one has the small eyes half-way. 
We define this genus as follows: 
Cephalothorax high and nearly plane, a little dilated behind 
the dorsal eyes, and narrower in front than behind; anterior 
sides nearly vertical, posterior sides and slope a little rounded; 
cephalic part occupying x /i the cephalothorax, and a little in 
dined forward; thoracic part falling steeply from just behin 
dorsal eyes. _ . 
Quadrangle of eyes ]/i wider than long, a little widei e m 
than in front. Anterior row visible from above, slightly curved, 
the middle eyes projecting considerably in front of the lateia 
eyes, and subtouching; the lateral less than /2 as laige, an 
separated from the middle eyes by /4 their own diameter. 
Eyes of second row nearer together than the antenor ateia 
eyes, and half as far from them as from the dorsal eyes. Dorsal, 
larger than lateral eyes, much nearer each other t an t 
lateral borders, in a row which is as wide as the cephalothorax 
at that place. Clypeus vertical, higher, but not wider than the 
two middle eyes. Frons ]/i as high as anterior lateia eyes. 
Falces a little wider than two middle eyes, about as long as 
face, vertical, a little divergent at the extremities, compressed. 
Manilas divergent, long, a little enlarged and truncated at ex¬ 
tremity, pointed at outer corner, slanting within towar a mm. 
Labium ] /s as long as maxillm, square. 
