95 Bulletin 'Wisconsin Natural History Society- [Vol. 9, No. 3. 



CC. T-spot present; large species, abdomen 33-35 mm., 

 hind wing 32-34 mm. ; female appendages 3-3.3 

 mm. ; hind wing with color streaks reaching 

 beyond second antecubital (beyond tin the type) 



morio n. sp. 



BBB. Male appendages with inferior spine, no inferior angle ; 

 female appendages 3-3.3 mm., vulvars U-shaped, the 

 tips parallel ; hind wings with color streaks to level 

 of the base of the triangle (to level of tip in morio) ; 

 wings hyaline, no flavescent tinge; T-spot always 



present spinigera Selys 



BBBB. Male appendages with superior modification ; no T- 



spot. 



C. Superior appendage slightly curved with sharp 



spine at apical third above, an inferior obtuse 



angulation at basal third (not rectangular as in 



the preceding species) ; wings hyaline, clear, no 



flavescent tinge ; female ? spinosa Hagen 



CC. Superior appenages with apical third sharply 

 declivious a tubercle above at the bend; in 

 lateral view the appendage curved beneath, with 

 two to four tubercles of various size ; female 

 apendages 2.3-2.7 mm., vulvars U-shaped ; wings 

 with brown at base, usually with flavescent 

 tinge throughout, giving them a dull appear- 

 ance canis MacLachlan 



CCC. Female appendages 4.5 mm.; wings with costal 

 streaks of brown; male unknown. . costalis Selys 



Tetragoneuria stella Wiliamson, sp. nov. 



Labrum golden, clyeus and frons olive or yellowish, the latter 

 and on the sides usually lighter, the frons in one specimen being as 

 bright as the labrum. Vertex olive, with a black border on the frons 

 in front of the vertex, this black produced on either side and anteriorly 

 in the sulcus of the frons, and including the black antennae. Hair 

 on face pale, cream colored, excepting' on frons where it is black. 

 Bear of eyes black. 



Thorax yellow or yellowish brown with white or nearly white pile. 

 The humeral and second lateral sutures each with a black stripe, 

 widest above ; the humeral stripe very narrowly connected with a 

 spot at the base of the middle legs ; the metastigma narrowly sur- 

 rounded bv black. 



