A Study nf Sonic Erg'atn«» yiiic Ants. 



323 



1. The ([ueens and workers uf Lcpfoffenijs elougata Bucklev differ 

 very little in exteinal anatomy. Two types of ovaries were fonnd 

 in the (ineens dissected; tlie one had long-, slender tnbules, two on 

 eacli side, abont lifteen eggs in eacli; the other had short tubules. 

 varying from two to three on each side, with only two or three 

 egg-s in each. The typical receptaculum seminis was present 

 in both types. The workers possessed two or three tubules on each 

 side. One worker. showing- no diflference in external strncture, 

 possessed the typical receptaculum seminis! 



2. The queens and workers of Pachycondyla liarpax Fabr., also 

 differ little in external anatomy. The queen is seldom found in the 

 commonly occurring nests, but pupae and larvae are usually found. 

 The ovaries of the queen had from five to seven tubules on each 

 side and the typical receptaculum s e m i n i s. Seven specimens 

 out of thirty-seven workers possessed a receptaculum. The ovaries 

 of the receptaculate workers had long-er tubules and therefore more 

 eggs in each than those of the ordinary worker. The tubules in 

 tlie workers varied from two to nine on each side; they were well 

 developed and contained mature eg-g-s. 



H. The (jueens and workers of Odontomachus darus Kog., also 

 are very similar in external anatomy. The ovaries of the queen, 

 possessing: five tubules on each side, were well develo])ed; the re- 

 '■ept aculiiiu seminis had attached to it. by a slender tube, a 

 tri-lobed orgaii. ap[)arently a gland. 'l^en receptaculate workers 

 possessed this gland also; the ovaries had well developed tubules, 

 varing in nnml)er fiom three to eijrht on each side. The ovaries ot 



