ICTTNUS. 11 



14. Ictinus species. 



Selts, Monogr. des Gomph., p. 268. 



Plate I., fig. 4, a — e. 



Nynipha, male. Length. 23 mm.; breadth, 10 mm. Locality: doubt- 

 ful. Coll. Hagen ; middle Himalaya, Rev. M. M. Carleton. Coll. Mus. 

 Comp. Zool. 



Body short, stout, roof-shaped. Head large, cordate, with straight 

 line behind the eyes ; the fore part of head, including eyes, triangular, 

 nearly equilateral ; part behind the eyes half as long as that before, 

 narrower next the prothorax. Lyes rather prominent, moderately 

 large, triangular ; part between the eyes same breadth as eyes. Sides 

 of the head, with small prominent tubercles below the eyes. Ocelli 

 developed. Vertex flat, sloping forward. Antennae shorter than the 

 head, 2 basal joints globular, 2d half the size of 1st; 3d twice as 

 long as the two preceding, dilated, flat above. At under side of tip 

 a small tubercle, perhaps rudimentary 4th joint. Occiput rather 

 rounded above, sides oblique, hind border notched in middle, hind 

 angles rather blunt. Upper lip stout, broad ; base of mandibles 

 heavy, not covered by upper lip ; the basal part of head below the 

 mandibles forming a point at each side ; basal part of maxillaa not 

 covered by mask. Mask extending between the fore legs, large, 

 nearly square, a little smaller behind ; flat, sides bent up ; fore- 

 border nearly straight, middle 3d a little produced, slightly denti- 

 culated. Palpi short, with bent and rather blunt point, inside finely 

 denticulated ; movable hooks long, sharp, arcuated. Prothorax not 

 so broad as head, in general shape semicircular ; fore-border forms 

 transverse triangular lobe ; hind-border thickened and bent up ; the 

 prothorax forms at sides beneath the eyes a protuberance. Meta and 

 mesothorax coming together in elevated ridge. Wing-cases reach- 

 ing 7th segment. Legs long, slender, formed for running ; hind legs 

 more separated at base than the others ; femora of fore legs a little 

 arcuated ; tibias angular, somewhat longer ; tarsi £ as long as tibiae, 

 basal joints very small, hooks strong and sharp. Middle legs similar, 

 but somewhat longer ; hind legs a little longer than the abdomen, 

 straight, flat. Tarsi only two joints, basal very short. Abdomen ovoid, 

 base contracted, broadest at 7th segment, 8th and 9th rounded off toward 

 end of abdomen. Dorsum elevated, roof-shaped. Median line in seg- 

 ments 7 to 9, elevated in flattened hooks, pointed at end of segments. 

 Side-border of abdomen sharp, with lateral spines on segments 7 to 9, 

 similar to Hagenius. Segments 2 to 5 short, following longer; 10th very 

 short and .entirely inserted in 9th, sides of segments 2 to 9 with 



