100 
MAST AX. 
Species I.— Mastax virescens , Perty (Del. An. Art. Bras. t. 24, f. 3. Serville H. n. Ins, 
Orth. p. 751. Burm. Handb. d. Ent. 2 f p. 653). Virescens, seu fuscus, facie et 
pedibus testaceis, elytris et alis diaphanis. Long, fere 10 lin. (teste Serv.) Brazil. 
Species II.— Mastax mutilata , Serv. Ins. Orth. p. 751. Lsevis glaber, brunneus, facie antice 
ochracea, prothoracis lateribus fulvis, tegminibus fere, alisque omnino, obsoletis, abdo¬ 
minis segmentis 6 et 7 fulvis, $. Long. lin. 5 (teste Serv.). Colombia. 
Species III.— Mas tax apicalis , Westw.f (Plate 26, fig. 1). Lnteus, capite supra, thoracis et 
abdominis dorso nigricantibus, hoc fascia pone medium apiceque extremo luteis, pedibus 
luteis nigro-maculatis, tegminibus et alis hyalinis ad apicem tenuiter fusco coloratis $. 
(Plate 26, fig. 1 a, head seen in front; 1 b , extremity of abdomen seen from the side; 
1 c f the same seen from below ; 1 d , natural length.) 
Long. corp. unc. f. Expans, tegmin. unc. If. Sumatra ; Sir S. Raffles. Mu9. Zool. Soc. 
London. 
Species IV.— Mastax vitrea , Westw. (Plate 26, fig. 2). Fuscus, facie fulvescente, abdomine 
in medio pallidiori, pedibus fuscis, femoribus posticis pallidius fasciatis; tegminibus et 
alis hyalinis parum infumatis. £ 
Plate 26, fig. 2 a } apex of abdomen seen sideways ; 2 b f natural length. 
Long. corp. unc. 1. Expans, tegmin. unc. If. Java, Mus. Hope. 
Species V_ Mastax guttata , Westw. (Plate 26, fig. 3.) Nigricans, subtus paullo pallidior 
facie genisque luteis, verticc angulato, abdomine $ ad apicem valde inflato; femoribus 
posticis fulvo oblique bifasciatis, tegminibus fuscis nitidis, guttis duabus versus apicem 
hyalinis, postica majori et ad marginem posticum extensa; alis hyalinis margine 
postico fusco. $ 
Plate 26, fig. 3 a, natural size ; 3 b , antenna; 3 c, head and prothorax seen sideways; 
3 d 9 head seen in front; 3 e, apex of abdomen seen from beneath; 3/, ditto seen laterally. 
Long. corp. liu. 7. Expans. tegm. lin. 14J. Sumatra, Sir S. Raffles, Mus. Zool. Soc. 
Lond.; and Philippine Islands, H. Cuming, Esq. Mus. Brit. 
The curious plant figured is the Stapelia adscendens of Roxburgh : Plants of Coromandel, 
vol. i. pi. 30. 
