The Scottish Naturalist. 381 



found to contain a cavity tenanted by several whitish or 

 yellowish larvae of a midge (? Cecidomyia). It was, un- 

 fortunately, out of my power to rear the insects. What 

 is evidently the same gall is recorded from Bolchen in 

 Lorraine by Herr Robert Liebel (Zeitsch. fur Natur- 

 iviss. LIX., 1888, pp. 569-70). 



App. 2. In the volume for 1888 of the VerhmuU. Zool. Bot. 

 Gesellsch. Wien, pp. 231-46, is a paper by Dr. Franz Low r 

 entitled Mittheilungen fiber neue und'bekannte Cecidomyi- 

 den, in which are some notes that bear upon the subject 

 of my present paper as given in detail below. 



Galium verum, Gall 3, is believed by Dr. Low to be the work 

 of his C. gaUiwia, reared by him from artichoke-shaped 

 galls on G. Mollugo (V.Z.B. Ges. Wien, 1S80, pp. 33-34). 



G. palustre, Gall 2, he is disposed to consider as belonging to 

 Cec. hygrophila, Mik (Wien. Entom. Zeitung, II., 1883, 

 pp. 209-16, t. III.), a species with which I am not 

 acquainted. 



Veronica SCUtellata. Dr. Low describes, under the name 

 Cec. similis sp.n. (I.e., pp. 2^2-^^) a midge reared from 

 galls on this plant sent him from Lorraine by Abbe 

 Kieffer, and which entirely agree with those found by 

 me beside the Corbie Loch. The midges are described 

 as follows : 



Male. Forehead and face yellowish, with pale grey hairs : parts of mouth 

 pale yellowish ; hindhead dark grey-brown ; eyes black, touching 

 on apex, kidney-shaped, encircling bases of antenme, margined be- 

 hind with yellowish-grey hairs. Antennai with joints 2 + 13, the 

 two basal joints reddish, the other joints dark grey, stalked, 

 equalling the stalks, each with a ring of pale grey hairs, stalks 

 reddish. Thorax on the back dull, in front blackish-grey, behind 

 reddish, with two shining longitudinal stripes diverging in front, 

 sides and lower surface reddish, scutellum reddish, almost bare. 

 Wings hyaline, with black veins, thickly covered and fringed with 

 dark grey hairs ; front margin black ; first longitudinal vein 

 close behind it and uniting with it just within the third of the wing- 

 length ; second vein almost straight, reaching the front margin 

 much in front of the tip, hinder branch of third vein almost 

 straight, and passing obliquely to the hind margin. Fold of wing 

 distinct. Halteres large, with grey-yellow stalk and dark-brown 



