March 1895.] 



PSYCHE. 



209 



inf. app., about as broad as long, the sides 

 equal, nearly straight, the upper slightly 

 convex, tlie lower sliglitlj concave, the 

 apical margin concave, bearing a large, 

 yellow or brown tubercle, rounded apirally, 

 tsvo-thirds as long as the appendage; the 

 groove separating it from the end of the 

 appendage is more distinct in the dorsal 

 portion, appearing like a slight notch, 

 recalling E. civile. Seen from above the 

 superior appendages are somewhat divari- 

 cated, cylindrical, terminating apically in 

 a rounded right-angle in the mid-line of 

 the appendage; the tubercle projecting 

 beyond, narrower, longer than broad, 

 rounded apically; the inner margin of the 

 appendage forms a minute tooth, yttry 

 slightly recurved, at the obtuse inner apical 

 angle. Seen from behind the dorsal and 

 ventral edges of the superior appendage 

 are seen to be rolled inward, the tubercle 

 occupying this inner channel and (in dry 

 specimens) slightly rolled, also, at its tip. 



12 $ (i headless, i teneral), Franktown, 

 Nev., June. Collected by S. W. Denton. 



Enallagma clausum, sp. nov. 



Abdomen 25-2S ; hind wing, 19-21 mm. 

 Prothorax with the anterior lobe trans- 

 versely lineate with pale; posterior lobe 

 greenish black, with pale margins and 

 triangular or cuneiform lateral spots. 

 Thorax with the mid-carina black or 

 lineate with pale; mid dorsal dark stripe 

 rather narrow; humeral stripe very narrow, 

 widest and more or less broken at the 

 suture. Pale ante-humeral stripe at least 

 two-thirds as wide as mid-dorsal dark 

 stripe. Abdomen black as follows: a quad- 

 rate spot on base of i ; a large apical orbi- 

 cular spot, pointed anteriorly and broadly 

 conected to narrow band on apical margin 

 of 2; apical two-fifths to two-thirds of 

 3, 4, 5 with a longitudinal stripe narrowed 

 submarginally (narrowest and pointed 

 anteriorly on 3) ; apical two-thirds of 6, 

 four-fifths of 7, and all of 10, on the latter 



broadened marginally, especially on basal 

 margin ; 8 and 9 blue. 



In profile the inferior appendage is the 

 longer, two-thirds as long as 10, stout, 

 directed nearly straight backward, the 

 lo.wer margin strongly convex, the upper 

 strongly concave, the apex stout, upturned, 

 about on a level with the upper part of the 

 broadened base; the whole appendage very 

 similar in shape to a cat's claw, but less 

 acute at tip. Superior appendage two-thirds 

 as long as inferior, directed downward, 

 the lower margin slightly descending 

 toward apex, the upper margin convex 

 basally, slightly sinuate at apex, some- 

 what recalling that of E. divagatts but less 

 hollowed near apex and less convex toward 

 base. In dorsal view the hind margin of 

 10 is deeply excised, with a deep depres- 

 sion in the middle between the dorsal 

 border and the superior appendages. Supe- 

 rior appendages short, blunt, very broad, 

 contiguous at base for nearly half their 

 length, the line of separation often visible 

 only with difficulty, — the contiguous por- 

 tion with rugose inner margin terminating 

 apically in a larger, slightly recurved tooth ; 

 beyond the tooth the appendage is suddenly 

 narrowed on the inner margin for a third of 

 its width, the re-entrant angle nearly square, 

 the distal inner margins of the pair of 

 appendages diverging moderately to the 

 rounded apices; the outer margin is convex 

 basally, nearly straight apically. 



6 (J, Franktown. Nev.. June. Collected 

 by S. W. Denton. 



Ophiogomphus aspersus, sp. nov. 



Abd., (J , 30 mm.; $, 30-32. Hind wing, 

 (J, 24; S , 26-27. Hind fem., 7. Pter., 3.5, 

 yellowish-brown, margined with black. 

 Wings very slightly flavescent at base. Face 

 yellowish-green. Vertex black, posteriorly 

 browm and green. Occiput yellowish-green ; 

 back of head immediately behind eyes black 

 above, on sides greenish-yellow, paler below. 

 Occipital horns slender, brown. Thorax 



