ON T/ENIOPTERYX PUTATA. 85 



which is common about rapid streams in Co. Wicklow in April 

 (Halbert). 



It may be useful to consider shortly some of the allied Conti- 

 nental forms. With this end in view I have made camera lucida 

 sketches of the apex of the abdomen from above of several 

 species. These figures are more or less diagrammatic. The 

 figures of the ventral plate serve only to show its outline ; no 

 attempt has been made to represent fully the structures lying 

 within the hollow of this plate. The form of the cerci is 

 important and useful, but it appears that allowances must be 

 made occasionally in respect of the position they happen to 

 occupy in each preparation. The remarkable, strongly cbiti- 

 nized vesicle, called by Klapalek the supra-anal lobus (or valvida 

 supra-analis), is a very striking feature, and the point of the 

 dorsal appendage of this organ affords good specific characters 



[cf. Klapalek, " Geschlechtstheile der Plecopteren " : 'Sitzungs- 

 ber. der kais. akad. d. Wiss. in Wien, Mathem.-naturw. Classe,' 

 Bd. cv. Abth. i. 1896, pp. 35-41, Taf. v. (named T. trifasciata, 

 but refers to hraueri) ] . 



Comparing Klapalek's figures of the apex of the appendage 

 of the supra-anal lobus of various species of Tceniopteryx 

 (" Ueber neue und wenig bekannte Arten der Palaarctischen 

 Neuropteroiden," p. 11: 'Bulletin internatl. de I'Academie des 

 Sciences de Boheme,' 1901), T. yutata is a little suggestive of 

 tristis, Klap., but this species is evidently different, having only 

 two sectors going from the cubitus to the hind margin. It is 

 very unlikely that putata will prove to be restricted to Great 

 Britain. Yet, with one exception, I have never seen anything 

 like it from the Continent. The exception is represented by a 

 pair of TcBniopteryx from Czarnohora, in the Eastern Car- 

 pathians, received from Mr. Josef Dziedzielewicz : <? , March 5, 



? , March 15, 1909. These were sent under the name of T. hraueri, 

 but they do not belong to that species. The male has full 

 wings, but in its structure it comes near putata. The female is 

 in a rather curious condition, the apical marking of the fore 

 wings being small, and the subapical crescent hardly indicated 

 at all. It would be interesting to know whether this is an 

 individual variation or normal for the locality. The small 

 apical marking recalls hraueri, but the facies of the insect is 

 rather different. If I am right in supposing this insect to be 

 putata, then the wing-markings are subject to wide fluctuation, 

 and the characters drawn from Scottish specimens will not be 

 universally applicable.* 



* I have since received a second pair from the same somxe. In the 

 female the markings are more normal ; the free sectors of the cubitus in the 

 fore wings are respectively two and three. In the male the sectors arc two 

 in both fore wings. This form is certainly close to i^tUata. In the latter 



