212 Zoologica: N. Y. Zoological Society [HI;? 



with four or five very minute spinules on dorsal surface. Pro- 

 thorax flat, subrectangular; with length to width at 1.25:1.00; 

 anterior third slightly broader than rest; anterior corner some- 

 what rounded; posterior corner rectangular; with one setiferous 

 protuberance at each anterior corner and a few along the sides, 

 otherwise entirely smooth. Meso- and metathorax smooth. 

 Abdomen with third segment the widest and as wide as pro- 

 thorax ; first and second abdominal segments slightly narrower ; 

 posterior segments gradually decreasing to the seventh, which 

 anteriorly is half as wide as the third and posteriorly only two- 

 thirds as wide as anterioi-ly; eighth to ninth abdominal seg- 

 ments small, forming together a rounded almost semicircular 

 termination of body. Second to seventh abdominal segments 

 laterally with small protuberances, without setae ; ninth abdomi- 

 nal segment dorsally terminating with two small, slender, 

 cylindrical, divergent cerci. Spiracles annuliform, located on 

 meso- and metathorax and on the first to eighth abdominal seg- 

 ments, where lateral protuberances develop spiracles placed 

 immediately above and in front of these. Pouch covering 

 elytron extending to posterior margin of fourth abdominal 

 segment, smooth, with four well marked longitudinal ribs. 

 Tarsal cover of hind legs ventrally extending to middle of 

 fourth abdominal segment; the entire leg-pouch smooth. 

 Antennal pouch short, clubshaped, directed backward and out- 

 ward ; ends of the last three or four joints marked by a ring of 

 small projections. 



Specific CharacteHzation. 



Coccidotrophus socialis Schwarz and Barber. 



(Pupa described from specimens preserved in the U. S. National 

 Museum) . 



(Plate IX, figs. 19-21) 



Length, about 4 mm. White. Prothorax with anterior 

 iateral protuberance small, but distinct, three posterior lateral 

 protuberances much reduced, not to be seen with naked eye or 

 ordinary lens magnification. 



