274. 'May, 



Platetrum depressum. — This of late years has become uncommon, and I rarely 

 see more than one or two in a summer. 



Libellula quadrimactilata. — Only two have occurred to me. 



Gomphus vulgatissimiis. — This also is less common than formerly. 



Cor iuleg aster annulatns. — Only one specimen lias occurred to me. 



^schna cyanea and ^sch. grandis. 



Calopteryx Virgo. — C Vesta, Charp.,is accounted a form or race of this species. 

 C. Virgo I have never found away from a stream, where, as is well known, it fre- 

 quents the bushes and trees that fringe the water. C Vesta, on the other hand, 

 lias never occurred to me on any stream, but only in woods, where it disports on 

 and about the tops of sapling trees in the full sunlight. C. Vesta occurs in 

 Trench wood, situated on a limestone ridge, near which is no stream. The Bir- 

 mingham and Worcester Canal runs through the low gi'ound below, but it is 

 nowhere bordered by bushes or trees, and I have walked its towing-path for miles 

 scores of times in the proper season without seeing a Calopteryx. C. Virgo frequents 

 the river Teme, in parts wl^ere it is most shaded by trees, while within sight, and 

 almost within throwing distance, C. Vesta frequents a wood on a rising ground, in 

 which there is no stream and no body of water larger than a small pond which dries 

 up in summer. 



Calopteryx splendens. 



Platycnemis pennipes. 



Ischnttra elegans. — Local. 



Agrion puella. 



Pyrrhosoma minium. 



A specimen of Leiicorrhinia dubia was captured with Sympefrum scoticum at 

 Whitherslack, some three or four years since, by Mr. J. H. Thrclfall, of Preston, and 

 kindly sent to me. — J. E. Fletcher, Worcester : April, 1884. 



[There can, I think, be no doubt that Calopteryx Vesta is founded on individuals 

 of C. Virgo that have not acquired their full colour, and that the difference in habits 

 of the two forms is due to the fact that C. Virgo (like most Agrionidce) shuns the 

 water in which it was bred until it is mature. — R. McL.] 



Geographical distribution of Chrysopa venosa, Eambur. — Hitherto, so far as I 

 am aware, this insect has only been recorded from Spain. As a curious point in dis- 

 tribution it is worthy to note, that I have just received tliree examples (2 (J , 1 ? ) 

 from my valued correspondent, Ilerr Max von zur Miihlen, of Dorpat, labelled 

 "Persien" (by which North Persia is intended), and I previously had an example 

 from another source labelled " Sharud, Persia." These agree with a Spanish example 

 received from the late Ed. Pictet. 



The pretty markings on the dorsum of the abdomen, tolerably well indicated 

 by Rambur in his figure in the " Faune de I'Andalousie," ii, pi. ix, fig. 7, are an at- 

 tribute of tlie $ only. In the <J the dorsum is somewhat fuscous, with a pale band 

 at the posterior extremity of most of the segments. Also from North Persia I have 



