'934 LORD WALSINGHAM ON THE [Nov. 26, 



Hah. Tenerife : La Laguna, in shoots of Genista canari- 

 ■ensis, 18. V, excl. 21. V -"9. VI. 1907. Thirty-three specimens. 



Closely allied to captivella HS. and acanthj/llidis Wlsm. [Ent. 

 Mo. Mag. XLT. 40 (1905)], differing from the former in the white 

 fascia being more outwardly oblique from dorsum to costa, and 

 from the latter in the form of this fascia, which is consistently of 

 ■even width throughout, throwing no projection toward the 

 term en on its outer side ; it is also slightly larger and has darker 

 hindwings. 



30. (2847-2) Aproaerema thaumalea "Wlsm. (Plate LI. fig. 9.) 



Ajjroaerevia thaumalea Wlsm. Ent. Mo. Mag. XLI. 41 no. 2847*2 

 (1905) \ 



Hah. Algeria^: Hammam-es-Salahin, @ Astragalus gombo, 

 III-Y, excl. IV-VI.^ Canaries — Tenerife : Guimar, Lotus 

 sessilifoUus, 6. Ill, 16-27. lY, excl. 10-29. lY, 20. Y. 1907. 



Thirteen specimens, bred from larvae forming sand-galleries 

 beneath the trailing shoots of Lotus sessilifoUus, on the coast 

 near Puerto Guimar, are not in any way distinguishable from my 

 Algerian specimens bred from Astragalus gombo. The food- 

 plants are not very nearly allied, but they both grow on hot 

 sandy soil, and the habits of the larvae are almost similar, but the 

 larvae themselves, or at least the specimens which I preserved, 

 believing them to belong to this species, are totally different, so 

 much so that I am led to doubt Avhether the Algerian specimen 

 (97110) does not rightly belong to some other species feeding on 

 the same plant. About the Tenerife larva there can be no 

 mistake : it is a curious, long, attenuated larva, with the thoracic 

 somites slightly swelled ; the head pale yellow-brown, pronota' 

 plate broad, but very faintly indicated ; abdominal claspers short 

 almost rudimentary. It is creamy white, with a slender reddish 

 line on either side of the dorsum, running from the mesothorax 

 to the anal extremity. Long. 13 mm. (98996) Mus. Wlsm. It 

 descends into the sand in a silken tube, coming up to feed on 

 the leaves of the plant, and again retiring below ground. So far 

 as I obsei-ved, the Algerian larva did not descend below the 

 surface of the soil, the sand- tubes being among the trailing 

 branches. 



The specimen figured (98995, § ) is from Guimar. 



31. (2847-1) Aproaerema mercedella, sp. n. 

 (Plate LI. fig. 11.) 



Antennae yellow, annulate with black. Palpi pale yellowish, 

 the median joint black nearly to its apex, except a narrow line of 

 white along its upper side ; terminal joint with a broad blackish 

 shade before its apex. Head yellowish white. Thorax pale 

 yellowish, with a diffused greyish fuscous median shade above. 

 Forewings blackish, Avith pale yellowish patches and lines occupy- 

 ing almost as much space as the ground-colour, which is accom- 



