ORDER-ORTHOPTERA. 
Famity—PHASMID&. 
Gexnus— HETEROPTERYX. G. R. Gray, Westw. (Mon. Phasm.) 
HETEROPTERYX DILATATA, 
Prate XXXII, Fie. 1. 
(Heteropteryx dilatata, Parkinson, Linn. Trans. iv, pl. XVIII. Westw. Mon. Phasm. p. 82.) 
(Syn. : Heter. Hopei. Westw. Trans. Ent. Soc. Lond. Ser. iii. vol. ii. Proc. p. 16.) 
Lata subdepressa: mesothorace conico: fulvo-lutea, (viridis? dum viva) teeminibus opacis pallide viridibus, 
alis puniceis; spinulosa, spinis parvis; capitis vertice spinis octo coronato; mesonoto in medio partis postice 
spinis duabus minutis armato; parte detecta supera oviductus segmento nono dorsali abdominis fere duplo 
longiori, elongato-lanceolata angusta, sensim ad apicem attenuata, apice furcato. (Fcm.) 
Long. capitis lin. 6; proth. lin. 7; mesoth. lm. 9; metath. line. 9; abdom. segm. 6-basal. lin 27; seom. 
3-apical. lin. 11; oviduct. lin. 6; = long. tot. cire. unc. 63. 
Habitat ; ? In Mus. Hopeiano Oxoniz. 
Closely allied to Hl. Grayii (Westw. Mon. Phasm. pl. XXX. fig. 3), but much larger, though with the 
spines much smaller; the tegmina and wings extend to the extremity of the second dorsal segment of the 
abdomen. The two anterior discoidal spines of the prothorax are smaller than the four posterior ones forming 
the posterior row, which are much more numerous and still smaller in /7. Grayii. The mesothorax has the 
square central dorsal part armed with three marginal spines on each side, three pairs of distant spines on its 
dise, and only two approximatory spines in the place of the posterior coronet of spines in ZH. Grayii; the teg- 
mina are comparatively larger, and extend to the extremity of the second abdominal segment. 
The sides of the body and the femora are much less strongly spined than in H. Grayii, but the tibial spines 
are very robust. 
The exposed portion of the dorsal piece of the ovipositor (fig. 1a, y) is elongate-lanceolate, narrow, gradu- 
ally pointed to the tip, where it is slightly furcate, and is half as long again as the terminal dorsal segment (*). 
Fig. 1a represents the four terminal segments of the body of the female lying on its back, with the parts of 
the ovipositor raised and separated, and fig. 1 4 the ventral surface of the ovipositor, the lettering of the different 
parts being the same in both figures; the * representing the ninth or terminal segment of the abdomen. 
a represents the large boat-shaped piece arising at the base of the seventh segment, and shutting in the 
other parts when at rest; 4, a pair of curved horny blades, each arising from a broad basal piece, ¢; d, two 
shorter horny bifid plates, which unite with 4 to form a concave bed for the reception of the larger eggs; e, the 
under lining of the basal part of the last segment ; f, a pair of straight horny conical appendages, at the base 
of each of which is seen a minute conical style; y, the under side of the upper portion of the sheath of the 
ovipositor, and + the entrance of the anus. 
I had named the specimen of this species, figured in plate XXXII, in memory of the late Rev. F. W. Hope, 
the munificent founder of the Chair of Zoology in the University of Oxford, to whom these curious insects were 
especial objects of interest, having never seen the original type of H. di/atata, the Hopeian specimen being in 
spirits and discoloured. The Saundersian Collection, however, now added to the Hopeian Museum by the 
liberality of Mrs. Hope, contains a dried specimen, and has enabled me to identify the species. 
