November, 1900.] 241 



cJ In colour it closely resembles the female, clown even to tlie 

 yellow 6th abdominal segment, but the Srd and 4th segments are 

 neither abbreviated nor overlapping ; the antennae are rather small, 

 as they are in all the five species with swollen costfe ; angle at forking 

 of 2nd thick vein small, 1st thin vein boldly curved at its origin, but 

 not as boldly as in female ; hypopygiutn small and without bristles, the 

 yellow anal organ short and stout, ventral plate broad and dusky. 



This interesting specimen was taken, curiously enough, by 

 Mr. Yerrall in Cusop Dingle, Herefordshire, when making a hurried 

 visit to those parts in September, 1905. I have never come across the 

 male myself, but four females have fallen to my lot, the dates and 

 localities being Tram Inn 22/6/05, Stokewood 10/6/07 and Houghwood 

 14/6/07 and 7/6/09. The captures were always made in wet places. 

 Mr. Malloch has also met with the female somewhat commonly in 

 Scotland . 



Brunneipennis, Costa. — This is the insect which Becker considered 

 to be the male of costalis. Its discovery as a British species, for 

 which we are indebted to Mr. Jenkinson, is from every point of view 

 a matter of the greatest interest, and necessitates the following 

 alteration in the table. 



85 (86) Wivgs with a large costal stigma. 



85a (85J) Costal swelling [stigma) stops loell short of the inner forlc of the second 

 thick vein costalis, v. Ros. 



8ob (85a) The swelling extends to the end of the costa. 



? . (Described from a single specimen). Very like costalis, but with the following 

 differences: — thorax dusky red instead of reddish-yellow; abdomeu yellow, 

 suffused with black down the middle of the basal segments (perhaps only an 

 individual character), 3rd and 4th segments simple; 2nd thick vein somewhat 

 inerassated, 1st thin vein only moderately curved at its origin ; in all else like 

 cos<rt?i'.?, but rather larger 2 mm. brunneipennis, Costa. 



The specimen was taken at Logic, six miles above Forres, on the 

 Findhorn, by Mr. Jenkinson at the end of August, 1903. So far the 

 male is unknown, but like the male of costalis it will certainly have 

 a simple costa. It was Becker's failure to recognise the thickened 

 costa as essentially a female character, which led him into the mistake 

 of uniting the two species in one. Zetterstedt knew the females, at 

 least, of both, and named them respective!}' axillaris and costata. His 

 types passed into Boheman's collection, where they were examined 

 by Becker. Costata, which he judged to be a male (erroneously as 

 we now know), he considered identical with Costa's bruitneipeniiis, at 



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