HYBRIDS — TEPHROSIA BISTORTATA AND T. CREPUSCULARIA. 299 



most of the larva? owingf to infcrioi- food, and only three or four pupated. 

 From these I bred two moths in Deeember or January ; they are barely 

 IJ" in expanse, both have a pale grey ground colour, and have the 

 markings fairly distinct, one inclining rather to the T. crepusculana 

 form, and the other towards T. bistortata, except that the brown tint 

 of this species is absent or weak. 



The remaining crosses, No. 1 '98 and No. 2 '98, were made in the 

 spring of '08. The male parents in both cases being Scotch T. bisturtata, 

 the females being of 2nd brood crosses, L and No. 02 respectively. The 

 last-mentioned $ I found in cop., but, as I have previously remarked, 

 her abdomen contained no ova. The remaining cross [No. 1 '98] 

 between a ^ Scotch T. bisturtata with a $ of 2nd cross L (both 

 parents of 1st cross ^ bistortata x ? crepmcularia) laid a fair batch 

 of fertile ova. On May IGth, I noted as follows: A good proportion 

 of larvic (about -^-) are in last instar ; some are going down, others arc 

 in penultimate instar, a few small. They vary greatly in colour, 

 from rich dark umber (like the larvte of ^ parent stock) to 

 dull putty or pale, dirty-looking grey. The tendency is for the 

 A to be closed and dark, but a few have it pale and faint at 

 the apex, while in some of the dark larvas the gi'ound colour 

 is so dark that the A is not noticeable. All but one had gone 

 down by May 31st. To my surprise only one moth emerged in June, 

 and none in July. But the very warm weather in August and Sep- 

 tember overcame the influence of the siugle-l^rooded male parent, and 

 a few more straggled out up to the number of 11 (2 $ s and 9 <? s ); 

 seven of the S s show a marked tendency to follow the ^ parent both 

 in colour and markings, except that they are rather duller and more 

 suffused, and they lack (to a greater or less extent) the pale and rather 

 marked marginal streak. Both the $ s are paler and browner than the 

 ^s, and show more tendency to follow the ? parent (hybrid stock), 

 one especially as regards the marginal band (a feature, as previously 

 mentioned, strongly marked in some specimens of brood L) . One male 

 specimen is quite unique, so far as my exi)erieuce of either the species or 

 their hybrids goes. It is of a dull smoky colour (quite unlike the dark 

 grey of ab. ddanwrensis), with a semi-transparent sheeny appearance 

 towards the base and central area uf wings. A band of this sheeny tint is 

 continued along the hind margin of the fore-wings nearly as far as the 

 marginal band. The outer bands on the wings are })reseut, but rather 

 faint and diffused. I cannot account for the cause of this coloration ; 

 it is, I should say, on a par with the melanic forms one occasionally 

 comes across in other species, and is probably only a secondary effect of 

 the crossing, if indeed it owes its origin to this at all. I have examined 

 the pot which contained the pupteof this cross, and find that three pupa3 

 have died, cause unknown, and that 13 have been attacked by fungus. 



<?^OLEOPTERA. 



Notes on the British Longicornes. 



By H. Sr. .JOHN K. DONISTIIOlirE, F.Z.S., F.E.S. 

 (L'onchuUd from p. 271 A 

 In the genus Monochamimis* two species are reported as British. 



* MonocfKunmus, by the ^Yay, should be spelt Monohninmiis, but .a mistake 

 was niado in the printing of the fust catalogue in which it appeared, and so 

 it is generally found spelt Monucltdiiniius. 



