324 L J «iy, 



most attacked. A week or ten clays ago, the affected pears were much more con- 

 spicuous than now ; they having shrunken, whereas the others have grown. — E. N. 

 Bloomfield, Guestling Rectory, Hastings : May Slst, 1889. 



Migratory swarm of Libellida quadrimaculata at Dover. — On Thursday, June 

 6th, being informed that there was a flight of dragon-flies on the Admiralty Pier, I 

 at once proceeded there, and found some hundreds of the above species flying round 

 the middle of the pier. 



I have witnessed extraordinary flights of this species in France, similar to the 

 swarms observed by a gentleman at Malmo, in Sweden (Ent. Mo. Mag., vol. xx, 

 p. 88), and although the swarm was small, I have never seen nor heard of one like 

 the present one at Dover. The weather was dull and oppressively hot, with a slight 

 wind from the N.E., and the dragon-flies appear to have come up with the storm- 

 clouds from the sea in the south-westerly direction. The heavy rain and thunder- 

 storm the same evening must have made havoc among them ; however, hundreds 

 were seen the next day, and a few on the 8th, but they have now entirely disappeared. 

 They were very difficult to catch, owing to their rapid movements, and their habit of 

 settling under the parapet on the outside of the pier. However, I succeeded in 

 getting a dozen or two, and amongst them were varieties with a brownish cloud 

 beneath the pterostigma, a similar cloud beneath the cubital spot, and in one 

 example the sub-costal veins between the base and cubital spot slightly tinged with 

 orange. The insects were confined to the vicinity of the pier, and were not observed 

 in the town. — C. G. Hall, 14, Granville Street, Dover : June 10th, 1889. 



[The variety noticed by Mr. Hall was formerly considered a distinct species — 

 L. prcp.nubila, Newm., — and is always met with where the type-form is common. — 

 E. McLachlan.] 



Entomological notes from Colorado. — To my list of 27 species common to 

 Europe and Colorado I can now add a few, viz. : Eros Aurora, W. Custer Co. ; 

 Haliplus rufcollis, Deg., West Cliff, 1889 ; T'espa germanica, Fab., W. Custer Co. ; 

 Agrotis saucia, Hb., W. Custer Co., frequent ; Plusia brassicce, Riley, which some 

 regard as a form of n i, Hb., W. Custer Co., larva and imago ; Heliothis armigera, 

 Hb., and also its var., umbrosa, Grote, W. Custer Co., frequent. The insects are 

 coming out in great force here now ; the clay before yesterday I took a $ and $ 

 Colias Eriphyle, var. autumnalis, the first for this year. I am having wonderful 

 success with the rose and willow galls : from five species of rose galls I have bred 

 four Cynipids and thirteen Chalcids ; and from three kinds of willow galls four 

 Cecids, one sawfly, and seven Chalcids ; galls referred to Cecidomyia salicis-strobi- 

 lo'ides produce two distinct species of Cecidomyia, which are at once separated by 

 the $ genitalia. Woolly galls on Bigelovia, which were long supposed Trypetid, and 

 have always been a puzzle, have produced Cecids, provisionally called Cecidomyia 

 bigelovice, as they are probably undescribed. Flat leaf-galls on Rosa have produced 

 a presumably new Cynipid, Rhodites roscefolii ; but all these will be examined more 

 fully, and described later. — T. D. A. Cockerell, West Cliff, Colorado : May 25th, 

 1889. 



