A Study of Some Ergatogynie Aiits. 325 



region. The iiiicrogynes had returned in coloring to that of the 

 typical schanfi(ssi Mayk. 



8. Two pseudogyiies of C. macnlatiis virinKS var. nitidiventris Emert 

 approacliing the soldier in size. differed from each other in color; 

 the one having the coloring of the worker, the other was almost 

 hlack; and in tlioracic structure. simplification having progressed 

 fiirther in the one than in the other. 



9. A very peculiar specimen of Cryptocerus aztecus Forel was 

 collected in Mexico; it is exactly like the soldier in every respect 

 except that it possessed rndimentary anterior wings; no traces even 

 of posterior sutures existed, however. 



10. Auother case of atavism was shown by a microgyne of 

 Pheidole ceris "Wheeler. which was light yellow in color while the 

 (lueen, soldiers and workers were dark brown. The microgyne showed 

 a simplification in thoracic structure also. 



11. Some Doryline and Camponotine ants were studied to de- 

 termine if specialization has taken place in the reproductive organs 

 lorresponding to the differentiation of external structure. 



12. The queen of Eciton schniiii Emery possessed a very higlily 

 :^pecialized ovary. There were about three hundred tubules on each 

 side, which emptied into a slender oviduct, extending the entire length 

 of the ovary. The receptaculum seminis was very large, pro- 

 bably an adaptation to the great number of eggs to be fertilized. 

 No ovaries were found in any of the workers. 



13. The sexual phases of C. (Colobopsis) abdiius Forel var. 

 ■tiolata Wheeler are represented by males, queens and workers. 

 The queen is seldom found; the one queen obtained had well 

 leveloped ovaries. six and seven tubnles on each side. The ovaries 

 •f the soldiers were not well developed , possessing only one tubule 

 • ' a side, as was also the case witli the workers; these ovaries did 

 "t possess the receptaculum. A bilobed accessory gland 

 'curred on the anal gland. 



14. C. marfjinatns Latr. also showed a very high differentiation 

 etween the sexual forms. The queen had very long, slender tubules, 

 •velve to each side, about thirty eggs in each. The soldiers had 

 om one to four on each side. The macro- and micro-ergates had 

 ily one tubule on each side, containing mature well developed eggs, 

 »wever. No receptaculum was present except in the queen. The 

 orkers of this species also possessed the bilobed accessory anal gland. 



15. The Campo)wtus fumidus var. festinata Buckley queens pos- 



Zool. Jabrb XIX. Abth. f. Syst. 21 



