86 DR. A. GUNTHER ON THE ZOOLOGICAL [ Feb. 6, 
The smaller “ nymph” (Zramea ?) (fig. 2) is only 19 millims. long. 
Uniformly very shining, brown, with a tinge of blackish above; pale 
greyish yellow beneath. Eyes deep black. Mouth-parts even still 
more prominent than in the form above described : mandibles thickly 
sprinkled with small blackish dots ; the interlocked edges without 
visible teeth. Head above with an oblong depression behind the 
region of the ocelli, with a lateral extension on each side, dilated, 
and forming broad shallow pits, in which the antennze are inserted. 
Pronotum with a broad yellowish median band ; its posterior edge 
raised and rounded. Anterior rudimentary wings narrow, extending 
over the hinder margin of the 7th segment; posterior very broad at 
the base in the anal portion, network distinct, the apices extending 
to beyond the middle of the 8th segment. Abdomen very short and 
broad ; each ventral segment with two small blackish spots, having 
a tendency to form two lines on the terminal segments ; alate lateral 
portions extremely broad; Sth and 9th segments each produced 
laterally and posteriorly into a lanceolate acute process, with fine 
spines on the outer edge, that on the 8th extending to about the 
apical margin of the 9th, that on the latter equally long, and ex- 
tending beyond the anal processes. Median dorsal anal process lan- 
ceolate, strong, curved downward, its dorsal edge with long blackish 
spines towards the apex. Lateral superior processes slender and 
spiniform, blackish at the tips, as long as the dorsal. Lateral in- 
ferior processes much longer, stronger, and nearly straight, furnished 
with long and strong black spines, inferiorly at the base with long 
yellowish spiniform hairs. Legs much longer than in the form above 
described, more slender, pale brownish, but with a faint blackish 
line on the femora and tibiz externally, and with blackish tubercles 
on their edges, whence arise short yellowish spines. 
This “nymph” is evidently in its last stage before the exclusion 
of the imago. The neuration of the hind wings is distinct ; and the 
position of the triangle warrants the belief that it pertains to Tramea. 
Upon comparing these ‘“‘nymphs” with those of two familiar 
European species, viz. Plathemis depressa and Diplax striolata, the 
most striking feature is the greater prominence of the mouth-parts, 
the longer and more slender legs, and the absence of the dorsal den- 
tate crest on the abdomen. P. depressa has the angles of the apical 
segments not produced into processes ; but in D. striolata the pro- 
cesses are very evident, and approach the forms here described. 
X. LeprpoprerRa, ORTHOPTERA, and HEMIPTERA. 
By A. G. Bur_er. 
The following list contains not only the species collected by Com- 
mander W. E. Cookson, but also some Hemiptera discovered by 
Charles Darwin, Esq., during the visit of the “‘ Beagle,” and recently 
deposited in the British Museum. 
Among the species most worthy of note may be especially men- 
tioned a beatiful little moth (Cydosia sylpharis, n. sp.) obtained by 
Commander Cookson, and certainly the most splendidly coloured form 
of that genus yet described. 
ae 
