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Show 1881.] THE SURVEY OF H.M.S. ' ALERT.' 83 NYMPHALID.E. 1. A R G Y N N I S CYTHERIS, Drury. Two pairs taken in Elizabeth Island in January 1879. The males agree well with Drury's figure and with Reed's figure of A. anna (Blanchard); one of the females also agrees very fairly with Blanchard's figure of A. lathonioides. The allied form, regarded by Reed as the A. cytheris of Drury, seems quite distinct, and must retain the name of A. montana given to it by Reed upon his plate. PAPILIONID^E. 2. T A T O C H I L A D E M O D I C E , Blanchard. One female captured on the 6th of January in Elizabeth Island. LASIOCAMPIDJE. 3. P H R I C O D I A H U M E R A L I S , var., Walker. A male caught on board in the Straits of Magellan, and two females in Elizabeth Island on the 6th of January. These specimens are altogether redder and darker than the typical form. EpiSEMIDiE. 4. H E L I O P H O B U S ? , sp. Puerto Bueno, Straits of Magellan, 20th of January, 1879. The two examples of this species are so much rubbed that, although the Moth appears to agree in structure with Heliophobus, it is quite impossible to decide whether or not it is referable to any known species. APAMIID^E. 5. M A M E S T R A ? , sp. The single example obtained, although evidently referable to a well-marked species, is unfortunately too much worn for recognition ; the antennae are wanting. Straits of Magellan, exact locality not noted. It is not impossible that this may prove to be an Agrotis when we see a perfect specimen. NoCTUID^E. 6. OCHROPLEURA MAGELLANICA, Sp. n. Primaries chocolate-brown, with very slight purplish reflections, the basal two thirds of costal border broadly pale sandy brown ; the orbicular and reniform spots of the same colour, with slightly darker centres, the orbicular with oblique outer margin and confluent with the costal border along its anterior margin: secondaries pale sericeous greyish brown, with slightly darker diffused outer border and pale sandy-yellow fringe: thorax chocolate-brown; head, antennae, and shoulders ochraceous ; abdomen fuliginous brown, whitish at the base, and with ochraceous lateral fringes and anal tuft. Primaries below pale fuliginous brown; secondaries whitish, with pale fuliginous |