ENTOMOPHTHOREAE OF THE UNITED STATES. 195 



Empusa apiculata n. s., figs. 63-75. 

 Coiiidiophores tending to become digitate. From small fly. 



Simple conidioplioie arising directly from a rounded hyplial body. From small fly. 

 A primary conidium germinating and producing a secondary conidlura. From small fly. 

 Primary conidium from small fly. 

 Conidium from deltoid moth. 

 Conidium from caterpillar of Ilyphantria. 



{Vnr. Major), primary conidia from beetle {Ptilodactyla serricoUis). 



Resting spore in process of formation from short liyphae here associated with a cross partition. From 

 Geonielrid moth. 

 ♦Fig. 75. Terminal portion of a rhizoid from small fly. 



Empusa Planchoniana ? figs. 76-81. 

 Primary conidia from aphides, fig. 77 having a slight apiculus. 

 Resting spores forming interstitially and terminally from hyphae. 



Empusa papillata n. s., figs. 82-90. 

 Conidiophores. 

 Secondary conidium in process of development from a primary spore. The columella is forced into the 



secondary spore probably in this case by the contraction of its contents, the primary spore being 



empty. 

 Terminal portion of a rhizoid. 

 Primary conidia. 

 A mature resting spore. 



PLATE 16. 



Empusa Caroliniana n. s., figs. 91-105. 

 Conidiophores, one arising directly from a hyphal body. 

 A hypha the contents of whicli have become contracted into hyphal bodies. 

 Primary conidia from fresh material. 

 Primary conidia as they appear in dried material. 

 Secondary conidium in process of formation from a primary spore. 

 A mature resting spore. All these figures are from Tipula sp. 



Empusa (Triplosporium) Presenii (figs. 106-140). 

 Masses of nearly naked protoplasm from which the hyphal bodies (fig. 127) are formed. 

 Conidium before discharge from the basidium. 

 Conidium germinating in the ordinary way. 

 Primary conidia. 



A secondary conidium of the second type produced from a primary conidium, on its capillary coni- 

 diophore. 

 Fig. 118. A secondary conidium of the second type produced from a conldiophore which is neither capillary nor of 



the usual type. 

 Fig. 119. A secondary conidium of the second type, borne on a capillary conldiophore, which has begun to germi- 



nate before separating from it. 

 A secondary conidium of the second type germinating laterally by a capillary conldiophore. 

 Secondary conidia of the second type germinating from their apices in the usual manner. 

 Secondary conidia of the second type. 



A primary conidiophore producing three capillary conidiophores, the middle one beginning to swell into 

 a spore. 

 Fig. 125. A hypha of germination of the usual type, from a primary conidium, has sent upa capillary conidiophore 



at the tip of which a secondary conidium of the second type is beginning to form. 

 A liyphal body germinating to form a conidiophore. 

 Two hyplial bodies taken from a mass HUiiig the abdomen of Aphis. 



Two hyphal bodies lying side by side previous to conjugation begin to show slight prominences on their 

 upper inner sides. 

 Fig. 129. These prominences have become gametes wliich have come in contact with one another midway between 



the two hyphal bodies. 

 Fig. 130. The partition wall between the gametes has wholly or partially disappeared and a bud has begun to ap. 



pear rising upwards from their point of union. 



