ACANTHODES. . . 119 
Hab. Panama, David in Chiriqui (Champion). 
Head rather strongly produced between the eyes; vertex finely rugose, irregularly 
sulcate. Antenne equal in length to the head and thorax, robust ; first and second joints 
short, moniliform, the basal one thickened ; the third and following joints closely united, 
and forming a slightly compressed club; the articulations between the third, fourth, and 
fifth joints (when viewed under a strong leris) distinct, the rest not defined; third joint — 
nearly as long as the preceding two united. Thorax conic, subcylindrical, obliquely 
converging from base to apex ; very slightly depressed on the hinder disc, closely and 
deeply punctured. Elytra narrowly oblong; sides parallel, minutely serrulate ; hinder 
angle produced laterally and somewhat obliquely into a subtrigonate concave plate ; 
apical margin obtuse, minutely serrulate ; upper surface with eight, at the extreme 
base with nine, rows of deep punctures; the second, fourth, and sixth interspaces, 
together with the suture, costate. 
In some specimens the puncturing between the second and third costa behind their 
middle is less regular, and occasionally there is a trace of an additional row of 
punctures. 
