PRACTICAL HIXTS. 187 



Coleoptera, parasitic on Ortlioptcva. ]\Ir. Jiutler found a footless grulj, 

 probably the larva of a '/'arhiiia, in the abdomen of Forjiciila aiiriru- 

 laria, L., and Boheman reared Tachina s^t'tijwmm from a pupa taken 

 from the swollen abdomen of the same species. Westwood notes that 

 the common earwig is attacked by an ichneumon, and Krania appendi- 

 ijasicr, L. (Irhneumoniihu), is parasitic on lllatta and Periplant'ta. Of 

 Coleoptera, the apterous female of Si/inhiit.s hlattanun, Hund., is parasitic 

 on 1'. (unerivana, L., and /'. (/cniianira, L. Aclogue mentions that 

 llapliiiJins iicrtinicdrnis, Thunb., occurs " sur les Blattes " in Germany, 

 the species being Plii/Uoilroinia i/cnuanira, according to Canon Fowler, 



Orthoptera, therefore, have many enemies, internal as well as 

 external, against which they are continually struggling, and with a 

 result that, it sometimes seems, still partakes too much of the nature 

 of success. 



Myrmecophila aceevorum, Panz., as a British species. — In 

 the Frocecdiniiii of the Entimohxiical Societi/ of London, 1869, p. 65, 

 Westwood records Blatta acerronon, Panz., as having been taken 

 by ]\Ir. Hope m moss in Archdeacon's copse, near Netley, Salop. The 

 correct name of the species should be Mi/niitTojiIula acervorniii, Panz., 

 it being one of the (injllodca, and not a Inatta. I have in vain searched 

 for the specimen in the Hope Collection, as this little cricket would be 

 a most interesting addition to our fauna ; but it can scarcely be in- 

 cluded in the British list until confirmatory evidence is brought 

 forward. It is a very small wingless insect, measuring about 8-5mm. 

 in length, reddish in colour, with very well developed posterior femora. 

 It is found under stones in nests of various species of ants. It has 

 been taken sparingly in widely separate districts in Europe. The fol- 

 lowing are recorded : Berlin, Thiiringen, Halle, Saxony, Bohemia, near 

 Vienna, Orsova, Mehadia, near Paris, Hyeres, Valencia, Alicante, Pisa, 

 Krim, Naples, and Aguillas. Brunner writes that it is not known in 

 Switzerland, but I have specimens in my own collection from that 

 country. Seeing that it occurs so far north as Berlin, it is quite 

 possible that it may be a native of Great Britain, and collectors should 

 specially look out for it : its small size, and, I should guess from the 

 development of its hind femora, great activity, probably makes it diffi- 

 cult to capture.— Malcolm Burr, F.Z.S., F.E.S., Bellagio, East 

 Grinstead. 



J§>RACTICAL HINTS. 



Field Work for July. 



By J. W. TUTT, F.E.S. 



1. — The imagines of Aiiropldla trahcalis (sulp/nimlis) occur in 

 June and July, taking short swift flights from one place to another 

 when disturbed. The species is somewhat difficult to discover when at 

 rest, and is not unlike a Corcindla in some positions. About five p.m. 

 is the most natural time of flight. 



2._The males of L'ocldidun anllana {linuicodis) fly high up over 

 the oaks at midday, in the hottest sun, in July, and require a long- 

 handled net for their capture. The females (and males in dull 

 weather) are best obtained by jarring the small oak trees growing in 

 wood clearings. 



