24 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.63. 



about equals the tibia in length. Tarsal claw of leg I almost 

 straight except for curve near its base and very stout, tarsi II and III 

 exceedingly small and stumpy, being about as broad at their bases 

 as they are long. 



length of last nymph, 1.11 mm.; width, 47 mm. 



Fig. 11. — Tetraoyhopus aotophilus. Dorsal view of nymph, X 100. 



Egg. — About twice as long as broad and with a rather small oper- 

 culum. Operculum circular, with a row of about a dozen nodular 

 cells around its rim and the central area lifted into a domelike cone. 

 Rim of opercular opening with a small flange. Cement attachment 

 structure conspicuous; hair attachment sheath very long, being 

 longer than the egg itself; free end of attachment sheath over twice 



