4 [January, 



The male structures are very remarkable. The last (true) ventral 

 plate is very deeply emarginate, but not divided into two. The median 

 lobe is like that of no other ; it has a dilated lower lip forming a broad 

 plate ; the tube is usually latei'ally compressed, but is capable of much 

 expansion, two ridges run along its upper face, which are contiguous or 

 separate over the orifice, according to the amount of distention ; a very 

 delicate process can be seen forming the upper lip of the median orifice 

 when the orifice is expanded, but usually this process is pressed down 

 and cannot be seen ; the struts are long in comparison to the length of 

 the lobe itself, being nearly as long as the two ridges previously men- 

 tioned. Tlie cap-piece of the tegmen is ample but not elongate and is 

 ciliate at the extremity ; the anterior process is elongate. 



In the female the spermatheca appears to be of unusual form, being 

 much coiled, but as I have only one mount of it I cannot satisfactoril}'' 

 appreciate its characters. 



I have several mounts of the aedeagus ; the one from which the 

 characters are chiefly drawn is No. 364. In this the sac (before 

 the mount was made) was partially extruded, but has become indrawn 

 subsequently. 



This species appears to be rather common on the larger species of 

 Hitmex in England, but I have seen none of it from Scotland. 



2. — ^rijiltrapion desideraliim. sp, n. 



Hiifuin, haud nitidwn, suLtiUter puhesceyis, fortiter punctatum, thorace 

 viedio mediocriter dilafato ; idis perhreinbiis. Loiig. cum rostra, 3|-3f nwi. 



Kather larger and more robust than i?. cruetdatum, of a duller red, equally 

 strougly punctured, the protliorax more dilated in the middle. The abdominal 

 segments are pure yellow, and the wings are very short, almost triangular in 

 form. The rostrum is very stout, and the eyes are widely separated. 



The aedeagus is very like that of E. cruerddtian but is more robust, and 

 the ridges forming- the margins of the trough (of the median lobe) appear to 

 be more thickened: the little swelling- at the tip of the median lobe is rather 

 hirjier ; ihe cap-piece of the teg:men is very synnnetrically formed, with an 

 elliplically rounded tip bearing long cilia. 



Arran, Aug. 1864, 1 ex.; Claygate, Aug. 1865, 2 exs. ; Thornton 

 and Uysart, June 1866, 2 exs.; Cambridge, Oct. 1866, 2 exs.; Cairn 

 Water, Dumfries, April 1868, 4 exs. ; Thornhill, July 30th, 1868, 1 ex. ; 

 also 2 specimens of which 1 neglected to note the source ; they were 

 probably given to me man}' years ago as crnentatum. One female, 

 taken at Logic, near Forres, by Dr. Jenkinson (27. ix. 1909), probably 

 belongs here, though it has the head differently shaped. 



