1907]. Wheeler, The Polymorphism oj Ants. 93 



Fig. 54. — Lateral view of same. 



Fig. 55. — Pupa of female Pseudochalcura gibbosa Prov., from northern Michigan. 



Fig. 56. — Kapala floridana Ashmead. Female, froni eastern Florida. From a 



specimen in the United States National Mu-seiun. 

 Fig. 57. — Kapala floridana. Male, from eastern Florida. From a specimen in 



the United States National Museum. 

 Fig. 58. — Isomeralia coronata Westwood. Female, from Pernambuco, Brazil. 



From a specimen in the United States National Museum. 

 Fig. 59. — Lateral view of same. 



Fig. 60. — Dicoelothorax platycerus Ashmead. Female. After Ashmead. 

 Fig. 6L — Scutellum of same, seen from above. After Ashmead. 

 Fig. 62. — Eucharis sp. Male, from the top of the Las Vegas Range, New Mexico 

 (11,000 ft.). 



Plate V. 



Fig. 63. — Pheidole instabilis; a, females (winged and dealated); e, male; o, sol- 

 dier; c, workers; r, intermediates (desmergates) ; w, Orasema viridis, 

 female; n, male. X 2. 



Fig. 64. — Brood of Ph. instabilis; a, female larvse and pupee; e, male pupae and 

 semipupse; o, soldier pupae; c, worker larvse and pupae; r, pupae of 

 desmergates; m, O. viridis, adult female, m', pupae and semipupae; 

 n, male; n' , pupae of same. X 3. 



Fig. '65. — Brood of Ph. instabilis. Letters as in the preceding figure; s, phthiser- 

 gates. X 3. 



Fig. 66. — Three female semipupae (phthisogynes) of Ph. instabilis bearing larvae 

 of O. tyiridis on their sternal surfaces. X 3. 



Fig. 67. — Worker brood of Ph. instabilis; c. normal worker pupae and semipupse; 

 •i, phthisergates; r. intermediate (desmergatic) phthisergate. From 

 specimens mounted in balsam. 



Fig. 68. — Solenopsis molesta validiuscula Emery; a, female; e, male; c, workers; 

 TO, Orasema coloradensis, female. 



Fig. 69. — Brood of Pachycondyla harpax Fabricius. The larv'se marked x each 

 bear a larva of Metopina pachycondylce Brues; z, detached Metopina 

 larva; v, puparium of Metopina; u, cocoon of Pachycondyla. 



Plate VI. 



Diagram to illustrate the relationships of the typical and atypical phases of ants. 

 The three typical phases are placed at the angles of an i-sosceles triangle, the excess 

 developments to the right, the defect developments to the left of a vertical line pass- 

 ing through the middle of the diagram. The normal atypical phases are in ordinary, 

 the pathological phases in italic type. The arrows indicate the direction of the 

 affinities of the atypical phases. The phases arranged on the sides of the triangle 

 are annectant, those radiating outward from its angles are new departures showing 

 excess or defect characters. For definitions of the different phases see pp. 53 to 57. 



