32 THE BLATTIDAE OF PANAMA 



Panama. Pan., VI, 1915, (Harrower), i small juv. 

 Chorrera, Pan., V, 2, 191 1, (Busck), i 9. 



From the material at hand we would note that, in addition to the 

 male genitalia features given in the original description, the dextral 

 lobe of the subgenital plate is concave on its internal surface, cover- 

 ing a very thin chitinous plate of almost equal size, the distal 

 margin of which is convex and armed with heavy curved dentiform 

 spines. In part of the individuals examined this inner plate is 

 concealed completely by the dextral lobe. 



These beautiful insects were found to be remarkably agile, 

 running with great rapidity over the tree trunks. When pursued, 

 the adults sometimes took flight, but always returned to the tree 

 they had just quitted. Both adults and young would at times 

 suddenly arrest their movements, their striking coloration then 

 blending astonishingly with the tree trunk upon which they were 

 resting. 



One female is at hand bearing an almost completely extruded 

 ootheca, with suture laterad. The ootheca is very thin, subrec- 

 tangulate in form, the dorsal and ventral margins showing very 

 slight arcuation, approximately 6 millimeters long and 2.9 milli- 

 meters wide. The dorsal third is strongly compressed with margin 

 (suture) bearing regular, well separated, small nodes, each of which 

 shows a brief transverse ridge on its dorsal surface. The surface of 

 the ootheca is microscopically very "finely and longitudinally sub- 

 striate, giving a smooth bark-like appearance; the vertical divi- 

 sions are subobsolete, about ten in number. 



The young of this handsome insect are buffy, very strikingly 

 marked with dark brown in a pattern of coloration very different 

 from that of the adult (see plate II, fig. 13). It is interesting to 

 note that this pattern, though having distinctive features, is in 

 many ways much more similar to that found in Aglaopteryx gemma 

 Hebard^^ and Aglaopteryx diapJuuia (F'abricius). We would 

 further note the coloration of Aglaopteryx lita, here described, the 

 adult of which species shows a type of coloration more suggcstivx^ of 

 that of adults of the present species, than of the adults of the two 

 other known species of that genus. 



*^ Described; Mem. Am. Ent. Soc, 2, p. 34, pi. i, fig. 9, (191 7). 



