rq2i.] R. J. TiLYARD : Epiophlcbia laidlawi. 95 



that the evidence obtained from a study of the larva itseh', and 

 from the slides of the two wing-sheaths and the gizzard, prepared 

 from it, is sufficient to prove this. Most unfortunately, Mr. Laid- 

 law did not succeed in obtaining a good preparation of the rectal 

 region; the larva, when I came to study it, had had the contents of 

 the distal half of the abdomen removed, so that we cannot now say 

 whether it possessed any rectal gills, or, if it did, what type of 

 gills the}' were. 



In describing this larva, I propose to depart from a practice 

 which I have hitherto followed most stringently, viz. never to 

 give a name to a larval tj-pe. The reasons for this departure may 

 be shortly stated here. Firsth', the larva is of such absorbing 

 interest, that it seems necessary to give it a name, to facilitate 

 future discussions upon it. Secondly, it seems reasonably certain 

 that, if I refrain from naming it, after having described it, some, 

 body else will certainly step in and do so seeing that the precedent 

 for the naming of larval types has already been set up in America. 

 And thirdly, as this is only the second species of the Suborder 

 known to exist in the world to-day, the other being in Japan, the 

 likelihood that two species of the same genus Epiophlcbia would 

 occur in one locality on the Himalayas, at such a high elevation, 

 seems so remote that it may be reasonably ignored. That being 

 so, it is clear that the figure given of the imaginal venation on the 

 wing-sheath of the larva is, to all intents and purposes, an imaginal 

 character, and sufficiently clear and detailed to make the recogni- 

 tion of the imago, when it is at last captured, a certainty. For 

 these reasons, I have decided to name the larva, and now have much 

 pleasure in dedicating the new species to my old friend Mr. Laidlaw 

 in recognition of the fact that he was the first to determine its 

 true affinities. 



Epiophlebia laidlawi, n. sp. 



(Plate XIII and text-figures 1-4.) 

 Description of the penultimate larval instar. 



Total length 20.2 mm. ; length of abdomen ii.'5 mm. ; breadth 

 of head across eyes 5-j mm. ; greatest breadth of abdonuvi at seventh 

 segment 5'4 mm. 



Build stout, in general appearance superficially Gomphine-like 

 but more closely resembling the larval type of the Petaliini. 

 Hairs are entirely absent (except those of the maxillae, and a few 

 small ones on the underside of the tarsi). -Surface of the body and 

 wing-sheaths strongly rugose, being covered with small, but very 

 distinct, wart-like prominences. General colour, a medium brown. 



Head. — Eyes large, dark brown, well-rounded, placed at the 

 antero lateral angles of the head. Postocular lobes well developed , 

 somewhat projecting, convex externally, but cut off rather straight 

 internally, where they converge inwards to the rather narrow 

 occipital region. Ocelli present, small but well marked, and placed 

 far apart to form a triangle. Antennae (text-fig. 2a) stoutly 



