MIGRATION AND DISPERSAL OF INSECTS LEPIDOPTERA. 97 



played by 21. var. meropc to M. aiirinia, whilst its habit of just skimming 

 the ground makes it all the more indistinct and baffling to the eye. I 

 took a fair number of males — none in first-rate order — but no females, 

 though Mr. Jones on the following day, when I was not with him, 

 succeeded in finding a spot where both sexes abounded. Krehia 

 rpiphvon var. cai<uiipe was also everywhere to the fore, and occasional 

 specimens of (Kncu acUn kept legs and arms busy across the boulders. 

 Among the blues, PoIi/cDiiiiiatus dptilcte and V. jihcrrtcs were common 

 enough, while, at a lower elevation, the first perfect specimens of ( 'alias 

 palacnn fell to my net. Ihrnt/iis pales, a bright and characteristic form, 

 with ab. napacac, fluttered gaily up and down the bill-side, and Pien's 

 rallidirr again put in a claim to be considered the commonest insect of 

 the month. I subjoin a list of the Brenner insects, as the country 

 does not appear to have been worked much by British collectors. No 

 doubt a longer visit would discover many to add to the catalogue, but 

 sixty odd species for three days is not a bad record, and made me 

 register a mental vow. when opportunity offers, not to pass Brenner 

 without another call : Paniassiiis apolla, Apon'a cratai'f/i, Picris 

 brassicac, P. rapac, P. iiapi var. brj/duiac, wasted ; P. callidicr, abun- 

 dant and fine ; Knclihw caydaiiiincs, one torn male ; Pcucoji/iasia 

 siiiapis iih.dini(')isis,a, few ; ( 'alias palacua, just coming out on the Poste- 

 alpe ; ( '. pliirainane, C. hyalf, generally common on the lower slopes ; 

 (ionaptcn/x rhainni, very fine; ( 'liri/sap/ta)tiis liippat/iac var. etin/bia, 

 below the village ; ('. dnrilis var, snbalpi iia, nenrly over; C. pJilaeas, 

 Pobiommatiis optilete, Postealpe, not infrequent ; P. baton, one fine 

 male ; P. phrrctes, females occurring freely ; P. arbitiilus, P. astrarclw, 

 large form ; P. icants, P. cunwdnn, nearly over ; P. carijdan, P. 

 dtur.clii, Ciipida ininimits, Xaiiiiadcs si')iiiar(/its, the covainonest "Blue"; 

 Jj/cama ariau, Aijlais iirticac. ]'a}U'ssa ia, Mditai'a aiirinia var, 

 incrapc, worn ; .U. pJtarbi', J/, didijiiia, M. asteric, on the Postealpe, 

 liard to distinguish, males rather worn, females (taken by j\Ir. A. H. 

 Jones) in better condition lower down at about 6000ft. ; Brcuthis 

 si'loh', B. ciijihrasj/nc, B. pales and ab. napaeae, B. ainatlinsia, P. thare, 

 Anjiiiinis aijlaia, A. niahe, A. paphia, A. adippe, Plrebia eassiope ab. 

 iielaiinis, P'. iiielaiiijiiia, P'. jiharte, P. iiiaiita, K. ceta, P. stippie, A'. 

 (/lacialis (/ on the Postealpe) ; P. lappaiia, PL ti/iidanis, P. i/arife ab, 

 triapes, P. ijaantr, P'. pranae var. jiit/iii, P. aetliiaps and ab. leiieotaeuia, 

 /','. liiiea, P. eiiri/ale, Oeneis a'ella, Sati/riis senuie, a few very dark 

 specimens seen ; Paran/e iiiaera, Ppinephele iaiiira, Piiadia luijieranthiis, 

 ('aenani/iiipha anania, ('. var. satijyiaii, ('. jiaiiip/iiliis, Sjiilat/n/rKs 

 aleaeae, Sipielit/nis fritillidii var. alreits, Thi/iiii'lieiis lineala, Paiiiphila 

 rauiiiia : 68 species in all. In conclusion, I may say that the only 

 inn at Brenner is worked on somewhat original lines. You look after 

 yourself until you have captured a meal, when, whether you are staying 

 \n the house or not, you are looked after by a waitress with the bill. 

 The system of pay as you go along may simplify the books, but it is 

 inconvenient, and the fact that Austria is struggling with a new coinage 

 of kroner and heller in place of the florins and kreutzers of approxi- 

 mately double the value does not help to simplify matters. 



Migration and Dispersal of Insects : Lepidoptera. 



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

 The common European Pierids are, as wehave just shown, notorious 



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