LIST OF THE LEPIDOPTERA OF WEI-HAI-WEI. 199 



most of which have hatched out, the young larvfe being now about 

 half-an-inch long. 



Fam. Zeuzerid^. 



Trypamis (= Cossus = Xylentes) vicarius, Walk. — Common in June 

 and July, 1898. As almost the only trees at Wei-hai-wei are willows, 

 the conditions are favourable to the maintenance of the species ; hence 

 it is not surprising that the average size of the specimens is much 

 greater than usual, equalling, indeed, that of our own T. ligniperda. 



NOCTU^ TRIFIDiE. 



Fam. Agrotid^. 



Acronycta riimicis, L. — One, on a willow near Flagstaff Camp, 25th 

 April, 1899. 



Leucania unipuncta, Haw.— Common in June. On the afternoon 

 of 7th June, 1899, I saw this species flying in hundreds around 

 flowers. 



Mamestra ahjecta, Hb. — One specimen, at Chifu, 9th May, 1899. 



Mamestra adjimcta, Stdgr., ab. mongolica, Stdgr. — One specimen, at 

 Chifu, 9th May, 1899. 



Agrotis segetis, Gmel. — One only ; Chifu, 5th May, 1898. Disturbed 

 from short grass amongst the sand-hills ; its colour agrees very well 

 with that of the sand. 



Peridroma {Agrotis) ypsilon, Rott. (= sufusa, Hb.). — Common in 

 June. 



Fam. HELIOTHIDiE. 



Heliothis dipsacea, L. — One specimen, at Chifu, on 5th May, 1898, 

 flying round flowers in the afternoon. 



Heliothis armiqera, Hb. — One at Chifu, to light on board, 4th May, 

 1898. 



Heliothis scutom, Schiff. — Common in Leu-kung-tao on 12th June, 

 1898. Readily disturbed from amongst bushes ; the only one I saw 

 on the wing of its own accord in the day-time was feeding on a thistle 

 flower. 



Fam. AcoNTiiD^. 



Erotyla (^Agrophila) trahealis, Scop. (= si(lphuralis,Ij.). — One speci- 

 men, at the eastern end of Leu-kung-tao, lOtli June, 1899. This 

 specimen agrees very well with one from Pekin in the National 

 Collection. 



NOCTU^ QUADRIFID.5]. 

 Fam. Plusiid^. 

 Plusia ni, Hb. — Fairly common in September and October. 

 Plusin gtitta, Gn. — Common in October. 



Fam. Calpid^. 

 Calpe excavata, Butl. — One only, in Leu-kung-tao, 14th June, 1898. 



Fam. HypopYRiDiE. 

 Spiramio simplicior, Butl. — Common in May and again in August. 

 Has a great liking for cultivated ground. It is very wary and, once 



