ENTOMOPHTHOREAE OF THE UNITED STATES. 189 



Entomophthora curvispora, Nowakowski I. c. A; I. c. B, p. 1G3, figs. 68-70. Sorokin I. c. 

 C, p. 233. 

 Under this name Nowakowski has described a form pecuUar for its strongly curved 

 conidia, which are elongate, rounded at both exti'emities and measure 10-1 o,a x 25-40/^. 

 They resemble the curved forms occurring in E. varlahilis, but are broader and more 

 rounded basally and much larger. The secondary conidia are represented as pei-fecti}' 

 spherical. The resting spores are true zygospores produced by a Spirogyra-Vike conjn- 

 gation; and of the usual foi'm. The species is parasitic upon Simulia latipes, a small fly. 



TaricJiium megaspermmn, Cohn I. c. B. Sorokin, l. c. C, p. 235, figs. 600-602, 598, 599, 

 635-636. Schroeter I. c, p. 223. 

 This species is known only from its resting spores, which have been thoroughly de- 

 scribed and figured by Cohn, and is parasitic upon the larvae of Agrotis segetum which 

 are turned black by the disease. The resting spores are apparently azygospores borne 

 laterally or terminally from hyphae and are pecnliar on acconut of their dark brown 

 epispore which is marked by sinuous furrows. The epispore is also frequently opaque 

 showing no furrows. The spores are spherical and of large size measuring from 34/^ to 

 55/j, average 50/... The figures given by Sorokin are copied from Cohn's plates and the 

 species has not, I believe, been noticed since its original desci-iption. It should ha noted 

 that E. virescens occurs in America on a similar host and may prove to be identical with 

 this species. 



Entomoj)htliora Phnjganeae, Sorokin I. c. C, 239, figs. 578, 628 a,h. 



Sorokin figures as characteristic of this species a long clavate body with a rhizoid-like 

 basal portion and a terminal round spore with a prominent rather narrow base of attach- 

 ment. In his text he states that the fungus was found on Phryganea grandis ( Jnne 26, 

 1881), growing only on the lower surfiice (betAveen the first and second pair of legs as 

 indicated in the fignre) being wholly superficial and not appearing within tlie body of the 

 host. The hyphae consist of two portions separated by a septum. The conidia are round 

 8x6-7/^, the hyphae being 5,a in breadth. The rhizoid-like basal expansion (by which the 

 hypha is apparently attached) is said to be characteristic. It is scarcely necessary to 

 remark that this can hardly be an Empusa and its position even among the Entomoph- 

 thoreae seems very doubtful. 



Sorokin remarks concerning this and the succeeding form, that he cannot vouch for 

 their distinctness from lack of material. 



Entomophthora jjellicidosa, Sorokin I. c. C, p. 240, fig. 629. 



Under this name Sorokin describes an Einjmsa Loiind on a ^^&ower&y," AntJiomy la 

 pagana. 



" The parasite resembles the ordinary E. Muscae, but the discharged conidia have the 

 strange peculiarity of being covered with sevei-al layers concentrically distri]:)uted, as 

 if a drop of protoplasm discharged simultaneously with the conidia had dried at several 

 different intervals forming each time something in the shape of an envelope. This char- 

 acteristic is so constant fiiat all the conidia scattered along the substratum were sur- 



MEMOIRS BOSTON SOC. NAT. HIST., VOL. IV. 27 



