ECOLOGY OF ISLE ROYALE. 321 



and others at Siskowit Bay camp (212, 222 eleven, and 232). A very 

 cojiimon species throughout eastern United States and Canada. 



Chrysidklae. 



Chrysogona rcrticalis Patton. (Det. T. & C). One specimen about 

 camp clearing Siskowit Bay (239). 



Geographic range: Described by Patton 1879, p. 67, and afterward 

 noted by Aaron 1885, p. 226, from California and Provancher 1887, p. 

 215, from Canada. 



Evaniidae. 



Gasteruptlon incertus Cresson. (Det. Fiske). One at camp at Sisk- 

 owit Bay (239). Mr. Fiske placed this in Foenus which Ashmead makes 

 a synonyn of Gasteruption. 



Geographic range: "Canada, Colorado" Cresson. All of this genus 

 that have been bred were found parasitic on some species of wasp or bee. 



Gasteruption tarsitorius Say. (Det. Fiske). One taken at Siskowit 

 bay camp clearing (A. 152). 



Geographic range: Eastern United States and "Canada." 



Anl(icus rufitarsus Cresson. (Det. Fiske). One at Rock Harbor 

 (i:«) ; and others at Siskowit Bay (A. 152, 212 five, 231 two, 2.39). 



Geographic range : "Canada, Colorado" Cresson. 



Some of the species in this group are parasitic on Cerambycid larvae. 



Ichneitmonidae. 



Poeiiicnis sp. (Det. Fiske). One about camp clearing Siskowit Bay 

 (2.">1). Probably a parasite on some wood-boring coleoptera. 



Pimpla conqiidsitor Say. (Det. Fiske). One about camp clearing Rock 

 Harbor (179). 



Geographic range: "Canada; U. S." Cresson. 



Doubtless parasitic on a Lepidopterous larva. 



Ephialtcs gigas Walsh. (Det. Fiske). One about camp at Siskowit 

 Bay (153). 



Geographic range: Described from Illinois, also reported from Can- 

 ada. 



Rhjjssa alhoimaculata Cresson (Det. Fiske). Taken at Rock Harbor 

 clearing (166), and at Siskowit Baj' camp clearing (A. 152, 153, 212 

 six, 222, 231 two, 239). 



Geographic range: "Canada; U. S." Cresson. 



Species in this genus have been repeatedly bred frem the larva of 

 xylophagous saw-flies such as Urocerus. The ovipositors in some species 

 attain the length of six or more inches, with these they are able to reach 

 the larva of the host and lay their eggs ev.en when the unsuspecting 

 victim is living far inside the trunk of a ti'ee. 



Bmeonidac. 



Apantelcs sp. (Det. C. & T.). One alcoholic specimen without data. 

 It would be impossible to even superficially determine this from the one 

 specimen. ! 



42 



