1898.] ENTOMOLOGICAL NEWS. 6l 



suture of the ante-clypeus dividing it into three yellow areas. The black 

 bands continue along the suture of the ante-clypeus to the outer edge of 

 the labrum, between the labrum and ante-clypeus, down the middle of 

 the labrum and along its lower edge dividing the yellow of labrum into 

 two areas. Base of mandibles and occiput yellow. Antennae and vertex 

 black. The top of vertex straight and bearing on the crest black cilia. 

 The face and vertex clothed with dark hairs. The basal joint of the 

 antennae with a narrow yellow line on the upper edge. Back of head and 

 eyes dark. 



Prothorax black; an anterior narrow line and two small median spots 

 yellow. Thorax bright yellow; mid-dorsal stripe wider below, divergent 

 above and joining the ante-humeral behind; ante-humeral and humeral 

 stripes (separated below for half their length by a yellow line) and a 

 double, interrupted stripe on the middle of the side, black. The humeral 

 stripe joins the one on the side anteriorly. 



Wing hyaline, pterostigma brown; membranules very narrow and pale 

 yellow; triangles not crossed and slightly angled at the origin of the cross- 

 vein between the two upper discoidal areolets. Arculus straight, the 

 sectors separated, and the spaces above and below equal. 



Legs black, the lower surface of the femora lighter, hind femora with 

 numerous short spines. 



Abdomen black, with a mid-dorsal and a lateral yellow stripe involving 

 the base of all the segments. The stripe on the dorsum of segments 3-9 

 narrow, on 8 club shaped, on 9 square, on 10 round, with a point behind. 

 The stripe extends the whole length of the dorsum of 1 and 2. The 

 lateral stripe conspicuous on 7-10. The spots on 9 and 10 involve the 

 whole length of the side. That on 9 notched above and resembling a 

 letter C. The yellow on the side of 10 extends along the sutures at the 

 base of the superior appendages. Segments 7-10 dilated, greatest width 

 at base of 8 (2.5 mm.) 



Superior appendages black, a little longer than 10, broad at the base, 

 the outer edges straight and parallel, the inner divergent, ending in a blunt 

 point. Under surface bearing numerous tubercles arranged in irregular 

 longitudinal rows, seven or eight of which appear as minute teeth in 

 profile view. 



Inferior appendage light colored, stout, grooved on the outer sides 

 near the base, the outer half abruptly curved upward meeting the superior 

 appendages one-third from the end. 



Described from a single male taken June 15, 1892, at Orono, 

 along the border of woods, by F. L. Harvey. Femalelinknown. 



Mr. Calvert makes the following comment on this species : 

 1 ' This male agrees with the characters given by Baron de Selys 

 (Comptes Rendus, Ann, Soc. Ent. Belg. 1879, p. 64) for Ophio- 

 gomphus excepting the branches of the inferior appendage, which 

 are strongly upcurved in their apical half, as in Erpetogomphus, 



