Occasional Papers of the Museum of Zoology 63 



August; his record of Orchelimuui glaberrimum probably also 

 applies to this species. 



Orchcliiiiuiii gladiator Bruner. 



Warren Woods, July i to 6, 1919, i male, 3 females, 3 immature 



females; July 16, 1920, 3 males, i female. 

 Sawyer Dunes, July 18 and 19, 1920, 2 males. 2 females. 

 Sawyer, July 3, 1919, i male. 

 Stevensville, July 22, 1920, i male. 

 Three Oaks, July 15, 1920, i male. 

 New Buffalo, June 30, 1919, 2 immature females. 



This speces is found early in the summer in similar situa- 

 tions to those in which Orcheliiiuiin vulgar c occurs later in 

 the season. It is less common than that species in the drier 

 localities, its favorite habitat being the marshes and wet mead- 

 ows. Specimens were taken in the drift on two occasions, 

 and a s'ngle male was found stridulating on a tall grass stem 

 in the beach grass halMtat ; these were the only specimens 

 taken in the dune area. 



Adults were just beginning to appear July 3 ; none were 



found during the two visits made to the region in late August 



and September. This species seems to have about the same 



seasonal relationship to vulgarc that Arphia sulphurca has to 



Arphia xanthoptcra ; it appears early and is replaced during 



the latter part of the season by the other species. 



Orchclimiim nigripcs Scudder. 



Warren Woods, August 30 to September 3, 1920, 7 males; Septem- 

 ber 5 to 7, 1920, 6 males. 

 Xew Buffalo, September 9, 1920, 2 males. 



Fairly common in the latter part of the season, especially 

 in marshy areas and low thickets. It occurs in a variety of 

 habitats, and is more arboreal than any of the other species 

 of the genus in this region. Specimens were taken on button- 

 bush shrubs in swampy thickets in the Galiea River flood- 

 plain ; in the branches of tall shrubbery and on hanging grape- 



