1913] North American Species of Megastigmus. 169 



"B. Entirely yellow species, also variable; perhaps two species 

 mixed. I, from Pseudotsuga douglassi [taxifolia] cf and 9 ; II, from 

 Abies magnifica; III, from A. grandis; IV, from A. amabilis; V, from 

 A. concolor. [M. spermatrophus WachtL] 



"C. Very small, dark species, very similar to small specimens of 

 the European M. strohilobius. From Tsuga [niertensiana] hookeriana. 2 9 



[M. tsiigce n. sp.] 



"D. Entirely black species from Japan. From Abies mariesi 2 9 . 



*[M. borriesi n. sp.] 



"E. M. strohilobius Ratzeb. from Denmark. 5 9." 



Megastigmus borriesi. 



*' Megastigmus borriesi n. sp. 



Female — -Length, about 3.3 mm. 



Head, thorax and abdomen dark brown, nearly black; yellowish around mouth. 

 Antennse of the type still in pupal sheaths. Scape brownish lighter beneath. 

 Legs brownish yellow, the posterior femora darker. Coxae dark brown like the 

 thorax. Wings hyaline, the stigmal club without a surrounding cloud. Ovi- 

 positor* as long as abdomen. 



Described from two females in rather poor condition. Reared by Mr. 

 Herman Borries from seeds of Abifs mariesi from Japan. 



TABLE OF HOSTS. 



M. aculeatus Swederus — Rose seeds. 



M. albifrons Walker — Seeds of Pinus ponderosa. 



M. brevicaudis Ratzeburg — Seeds of Sorbus. 



A/, borriesi Crosby — Seeds of Abies mariesi from Japan. 



M. flavipes Ashmead — Unknown. 



M. lasiocarpce Crosby — Seeds of Abies lasiocarpa. 



M. nigrovariegatus Ashmead — Rose seeds. 



M. physiocarpi Crosby — Seed capsules of Physocarpus opulifoliiis. 



M. pinus Parfitt — Seeds of " Picea bracteata," Abies nobilis, Abies magnifica, 



Abies concolor, Abies grandis, Abies amabilis. 

 M. spermatrophus Wachtl — Seeds of Pseudotsuga taxifolia, Abies magnifica, Abies 



grandis, Abies amabilis, Abies concolor. 

 M. tsugce Crosby — Seeds of Tsuga mertensiana hookeriana. 



