ENTOMOPHTHOREAE OF THE UNITED STATES. 195 



Empusa apioulata n. s., flgs. 63-75. 

 Coiiidiophores tending to become digitate. From small fly. 



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

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

 Primary conidium from small fly. 

 Conidium from deltoid motli. 

 Conidium from caterpillar of Hyphantria. 



{Var. Major), primary conidia from beetle (Ptilodactyla serricollis). 



Resting spore in process of formation from short hypliae liere associated witli a cross partition. From 

 Geometrid motli. 

 *Fig. 75. Terminal portion of a rliizoid from small fly. 



Smpusa Planchoniana ? flgs. 76-81. 

 Figs. 76-78. Primary conidia from apliides, flg. 77 having a slight apiculus. 

 Figs. 79-81. Besting spores forming interstitially and terminally from hyphae. 



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

 Conidiopliores. 

 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. 

 Primai'v conidia. 

 A mature resting spore. 



PLATK 16. 

 Empusa Caroliniaua n. s., flgs. 91-105. 

 Conidiophores, one arising directly from a hyphal body. 

 A hypha the contents of wliich 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. 

 Fig. 105. A mature resting spore. All tliese figures are from Tipula sp. 



Empusa (Triplosporium) Presenil (flgs. 106-140). 

 Masses of nearly nalced protoplasm from which the hyphal bodies (flg. 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 coui- 



diophore. 

 A secondary conidium of the second type produced from a conidiophore which is neither capillary nor of 



the usual type. 

 A secondary conidium of the second type, borne on a capillary conidiophore, which has begun to germi- 

 nate before separating from it. 

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

 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. 

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



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

 Fig. 126. A hyphal body germinating to form a conidiophore. 



Flg. 127. Two hyphal bodies taken from a mass filling the abdomen of Aphis. 



Figs. 128-140. Two hyphal bodies lying side hy side previous to conjugation begin to show slight prominences on their 



upper inner sides. 

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



the two hyphal bodies. 

 Flg. 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. 



