212 Transactions. 
of both wings, the hindwings remaining all the time shorter than the 
forewings, and the venational scheme persisting. It would appear as if the 
Auckland Islands had been originally colonized by a species of Nesoperla 
long ago, and that the shortening of the forewing and lengthening of the 
cerci had both been brought about in response to the restricted insular 
condition. 
Aucklandobius complementarius End. 
Enderlein, Deutsche entom. Zeitung, 1909, pp. 681-82, figs. 1, 3. 
It is not necessary to add anything to Enderlein’s excellent description, 
with figures of the venation and the ventral plate of the female. 
T in Dresden and Stettin Zoological Museums. Collected by 
Professor H. Krone (two males, one female). 
Locality.—Auckland Islands. 
Genus ZELANDOPERLA n.g. (Figs. 13, 15, 16.) 
of the complete set of pterostigmatie veinlets in both wings, and also by 
the complete series of distal cross-veins below Cu, in the forewing. The 
pattern of the forewings in all species is much variegated. 
KEY TO THE SPECIES OF ZELANDOPERLA. 
(Distal half of forewing hyaline, with dark-fuscous markings 
around the cross-veins n x 2; 4 
Distal half of forewing brownish-fuscous, with hyaline patches 
situated in between the cross-veins P Ra Ыы; 
Large, robust species, heavily marked with dark fuscous ; 
| — see cross-vein enclosed in a dark almost circular 
} pate - ғ: so .. ws T 
2f Smaller and slenderer species, less heavily marked with dark 
fuscous; each distal eross-vein enclosed in a much smaller 
suboval patch Eý $5 
1 2 
Z. fenestrata n. sp. 
Z. decorata n. sp. 
Z. maculata (Hare). 
Zelandoperla decorata n. sp. (Figs. 13, 14a.) 
. 9. Forewing, 14-5 mm. ; hindwing, 12:5 mm. ; expanse, 30:5 mm. 
Head short and wide, dull black, with pale-greyish pubescence. Median 
ocellus very small, the two lateral ocelli much larger, ruby-red, set 
on large black tubercles. Eyes, antennae, and mouth-parts dark brown. 
Behind the ocelli there is a transverse band of dark brown from eye to eye. 
Antennae 10 mm. long, basal segments very strong and large, second 
segment much smaller, but considerably larger than the others (fig. 14a). 
Thoraz.—Pronotum 1:5 mm long by mm. wide, with well-defined 
anterior, posterior, and median longitudinal grooves, the last-named slightly 
widened in the middle; colour dull black, with greyish-white pubescence 
(fig. 14a). Meso- and meta-notum shining black, with very slight pubes- 
cence. Legs dull brown to blackish, with soft pale hairs; femora 
mostly brown, with two patches of blackish, one at apex and one a little 
before ; tibia with a black patch at base, followed by a pale-brownish 
