101. TENTHREDO. 319 



175. Tenthredo nimbipinnis. 



Tenthredo nirhbipennis, Cress. Trans. Amer. Ent. Soc. iv. p. 155 

 (1872). 



Hab. Texas. 



a,b. 5> . Texas. Dr. Cresson. 



176. Tenthredo nigrofasciata. 



Tenthredo nigrofasciata, Esch. Entomogr, p. 92 (1822). 

 Hab. Unalaschka. 



177. Tenthredo vittata. 

 (Plate XII. fig. 14.) 



Exp. al. 10| lin., long. corp. 5 lin. 



Chestnut-red ; ocelli and a small spot between and beneath each 

 antenna black ; face yellow, clypeus very deeply concave, mandibles 

 red. Thorax red, with three black spots above, and the middle of 

 the pectus black ; collar and tegulse yellow. Abdomen red above, 

 and black to the middle below ; two yellow spots above the hinder 

 coxae ; the first four segments above are narrowly edged with black 

 behind, this is interrupted in the middle on the third, but more 

 widely on the fourth ; the sixth segment is marked with a small 

 black spot on each side ; and the saws are black. Coxae black ; legs 

 reddish ; front femora with a black line at base above ; four hinder 

 femora mostly black ; four front tibiae yellowish beneath ; hind tibiae 

 yellow. Wings yellowish hyaline, with yellow nervures ; stigma 

 reddish brown at the extremity. 



Hab. Hudson's Bay. 



a. 2 • ( T yP e st - Martin's Falls, Dr. Barnston. 



Albany River. 



178. Tenthredo castanea. 

 (Plate XII. fig. 17.) 



Exp. al. 11 lin., long. corp. 5 lin. 



Chestnut-red ; face yellow, tips of mandibles red, middle of pectus 

 black. Pore wings yellowish hyaline, with yellow and brown ner- 

 vures ; costa yellow ; stigma brown at the extremity : hind wings 

 clear hyaline, with brown nervures. 



Hab. Hudson's Bay. 



a. 2 • (Type.) St. Martin's Falls, Dr. Barnston. 



Albanv River. 



