Pechham—The Attidae of Borneo. 
631 
bright band, of iridescent green extending from the front eyes 
to the posterior margin and occupying the entire upper sur¬ 
face. The sides of the thoracic part are black, but those of 
the cephalic are covered with iridescent pinkish scales, which 
extend across the clypeus. All around the lower margin of 
the cephalothorax is a narrow band of silvery white. The ab¬ 
domen has a covering of silvery iridescent scales, with two 
transverse bands of deep coppery red, one in front of and one 
behind the constriction. From the front one, two curved 
bands of the same red color extend forward, partly enclosing 
a circular spot of the iridescent scales. The sternum and 
venter are also covered with iridescence. The faices are light 
yellowish. The palpi are dark, covered with shining scales, 
as is also the femur of the first leg. The tibia and metatarsus 
of the fourth are black in the middle with pale extremities. 
Otherwise the legs are pale yellow with black streaks in front 
and behind. 
The coloring of the female is similar, excepting that a trans¬ 
verse band of white iridescent scales, coming up from below, 
crosses the abdomen behind the middle, taking the place of the 
constriction in the male. The femur of the first leg is not 
darkened, the palpi, as well as the legs, being pale yellow with 
black streaks in front and behind. 
Three males from Kuching and one female from Sarawak. 
Mr. Shelford says that this species mimics an ant. Its form is 
certainly antdike, although its coloring is gorgeous and strik¬ 
ing. Although it has but two, instead of three, pairs of met¬ 
atarsal spines, it agrees very well with Simon’s description of 
the genus Orsima which heretofore has had but one represen¬ 
tative, 0. constricta from Congo. 
Pseudamycus E. S. 
The cephalothorax is high and slopes rather steeply in both 
directions from the dorsal eyes. The sides are sometimes 
nearly vertical and parallel, sometimes widened out below and 
behind. The quadrangle of the eyes occupies half or nearly 
half of the cephalothorax, is one-third wider than long in front 
and is plainly wider in front than behind. The front ejyes are 
