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, p. 653). Virescens, seu fuscus, facie et 
pedibus testaceis, elytris et alis diaphanis. Long. fere 10 lin. (teste Serv.) Brazil. 
Specirs I1.—Mastaxr mutilata, Serv. Ins. Orth. p. 75]. Levis 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 I1].—Mastax apicalis, Westw.{ (Plate 26, fig. 1). Liuteus, 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 4, extremity of abdomen seen from the side; 
lc, the same seen from below ; 1 d, natural length.) 
Long. corp. unc. $. Expans. tegmin. unc. 15. Sumatra; Sir S. Raffles. Mus. Zool. Soc. 
London. 
Species 1V.—Mastazx 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. 2 
Plate 26, fig. 2 a, apex of abdomen seen sideways ; 2 6, natural length. 
Long. corp. unc. 1. Expans. tegmin. unc. 13. Java, Mus. Hope. 
Srecies V.—Mastax guttata, Westw. (Plate 26, fig. 3.) Nigricans, subtus paullo pallidior 
facie genisque luteis, vertice 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 6, antenna; 3c, head and prothorax seen sideways ; 
3 d, head seen in front ; 3 €, apex of abdomen seen from beneath; 3 f, ditto seen laterally. 
Long. corp. lin. 7. Expans. tegm. lin, 143. 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. pl. 30. 
