284 H. A. HAGEN. 



eyes and projecting a little more than the eyes, so that the tip is visible from 

 above; antennre shorter than head, joint one globular, two smaller, annular, three 

 very hairy twice as long as the two basal, cylindrical, straight, not thicker than 

 second, but a little increasing to tip, which is bent up a little and blunt; fourth 

 very short, conical ; mask extending between forelegs, large, flat, square, basal 

 fourth a little narrowed, sides bent up; middle third of fore border produced in a 

 rounded short lobe, with a short comb of scales, and on each side with seven short, 

 dark teeth; palpus just meeting, arcuate, moderately sharp pointed, inside with 

 about a dozen dark teeth similar to those of the mask; movable hooks not very 

 long, sharp, arcuated : prothorax a little narrower than head, transverse oval, half 

 as long as broad, side angles rounded ; wing cases reaching 4th segment; abdomen 

 large, nearly circular, more than twice broader than head, broadest at 7th seg- 

 ment, somewhat rounded below, strongly roof shaped above ; segments 1 to 5 

 short, 6 to 9 longer, 7th and 8th about twice as long as the basal ones, 1 0th very 

 short, inserted entirely in a large obcordate excision of 9th ; the lateral edges of 

 segments 2 to 9 as in Hagenius, separated by the ventral suture, forming lateral 

 spines on segments 4 to 9 successively larger, triangular, sharp, longest on 7th; 

 the lateral edges with long hairs, but on 7 to 9 with a comb of strong, arcuate, 

 sharp spines; lateral border of 9th very oblique, the spines longer than last seg- 

 ment; dorsal hooks on 2 to 9, the basal ones smaller and separated, fith to 9th on 

 the whole length of segment forming a sharp dorsal crest; anal appendages short, 

 stout, triangular, hairy, a little longer than last segment, laterals one-third shorter 

 than the others, very sharp, more than the others; scars large, four round pol- 

 ished spots on each side of the middle line; dorsum roughly granulated; ventral 

 sutures only a little divergent on 8th, more divergent on 2d segment; middle 

 space about half as broad as the laterals ; ventral bags small on 4 to 6? ; segments 

 7 and 8 with a kind of additional ventral suture, beginning short before the lat- 

 eral spine and going oblique to the foregoing segment, not reaching the longitu- 

 dinal ventral sutures ; legs long, hairy, not very strong; forelegs less distant than 

 middle legs, hind legs widely separated ; the four anterior legs equal, femur 

 stronger, bent; tibia straight, with an apical exterior hook, tarsi short; hind legs 

 longer than abdomen, femur straight, reaching 7th segment, tibia shorter : tarsus 

 one-third shorter, only two jointed (as on the anterior legs), basal joint very 

 short, claws long, bent on tip; the apical margin of the 8th ventral segment be- 

 tween the longitudinal sutures is slightly bisinuated, and just in the middle are 

 two very small but sharply divided tubercles, which represent always the female 

 genitals. I have not seen any male. 



That the nymphae belong to Ictinus is sure, as in East India no other 

 genus of the group exists ; perhaps it may belong to 1. jn-secox. There 

 is in the collection a dry specimen from the collection of the late Dr. W. 

 Schneider, in Breslau, Prussia, said to be from Brazil. The specimen is 

 23 mm. long; wing cases reaching half of 7th segment; it is a male, 

 and the only one seen. The specimen is alike to the Himalaya ones, and 

 the figures by Cabot except 4d and 4e are from this specimen. I should 

 believe it to be more prudent to accept the locality Brazil as doubtful, 

 till more specimens arrive. There exists a species of Ictinus {I. latro Er.) 

 in British Guyana, collected by Sir R. Schomburgk, in the Museum of 



