PIIASMID.E. PHASMA. 



123 



19. (320.) Phasma ambiguiim. 

 Pl.vie XIII. tig. 3, male. 



Cinereum ; tegniiuibus nigvis, spina in margine antcriori; 

 area costali alisque pallide fulvis, margine cinereo ; corpore 

 nigro (mas et fa-m.). 



Long. Corp. maris, lin. 19 ; cap. lin. 1 ; jirotli. lin. |- ; 

 mesoth. lin. 2 ; raetatli. lin. 3 ; abdom. lin. 10 + lin. 2 = 

 lin. 12; tegm. lin. 2 ; alse, lin. IH; alar, expans. unc. 2. 



Long. corp. fcem. uuc. 2^; cap. lin. If; proth. lin. 1^ ; 

 mesoth. lin. 2ii- ; metath. lin. 4^ ; abdom. lin. N+lin. 2== 

 lin. 16 ; tegm. lin. 3^ ; alae, lin. 17 ; alar, expans. unc. 3. 



Phasma ambigna, StoU, Spectr. pi. 2,5. f. 98. 

 Phasma ambiguum, G. R. Grai/, Syn. Phasm. p. 20. 



Semite, H. N. Orth. p. 269. 



De Haan, Orth. Orient, p. 123. 



Hah. 1 (Stoll); Caveune (Serville) ; Villa Nova, 



Brasilia (Bates). ' B.M. 



I have but little hesitation in considering the insect re- 

 presented in Plate XIII. fig. 3, as the male of Stoll's Ph. 

 ambigua, although it differs slightly in several respects 

 from Serville's detailed description of the species. The 

 female, as will be seen from the measurements given above, 

 is considerably larger ; the spine on the tegmina of the 

 male is not so large, and is more deflexed than in the 

 female ; the antennae of the male are very long and slender, 

 consisting of about forty joints, the joints long and slender, 

 slightly hairy, and scarcely distinguishable from each other ; 

 near the extremity of the antennae in the female there is a 

 white annulus about a line long ; the costal area of the 

 wings in the female is greenish brown, with a few slightly- 

 marked pale spots near the apex, noue of which are dis- 

 cernible in the male ; the posterior area is of a dirtv huffish 

 white, with bnff veins. The legs are dirty brownish green, 

 with the femora and tibise darker at the tips ; the ante- 

 rior and middle tibise are also slightly marked with paler 

 aunuli. 



Pl.\te XIII. Fig. 3. The male, of the natural size. 3 a. The 

 terminal segmeuts of the abdomen of the male seen side- 

 ways. 3i. One of the tegmina of the female with the erect 

 spine. 3 c. The terminal segments of the abdomen of the 

 female seen from above, showing the longitucUual black 

 streaks. 3 i1. The same seen sidewa\'s, showing the very 

 slightly swollen operculum extending only to the middle of 

 the eighth dorsal segment. 



20. (321.) Phasma spinicolle. 

 Olivaceo-fulvum ; capite 3-ocellato ; antenuis niulti-au- 



nulatis ; mesothorace scabro-spinoso, linea dorsali media 

 nigra ; alls obscuris ; tegniiuibus parvis, quadratis ; femo- 

 ribus anticis rectis. 



Long. Corp. maris, I" 10'"; fcem. 2" 4'". 



Phasma spinicolle, Burmeister, IlanM. d. Eiit. ii. 585. 

 Be Haan, Orth. Orient, p. 123. 



Hab. lu insula St. Domingo, Port au Prince. 



Specimens of both sexes of this very distinct species are 

 preserved in the Royal Museum of Berlin, where I have 

 examined and made drawings of them. 



21. (322.) Phasma armatum. 



Obscure brunneum ; capite antice lineis duabus tuber- 

 culatis ; mesothorace postice dilatato, antice gibbo, lineis 

 quatuor spinarum armato ; tegniiuibus parvis, quadratis, 

 areaque costali brunneis, reticulatis ; alls hyaliuis, pallide 

 rubris ; pedibns brevibus, nigro-brunneis, albo-fasciatis ; 

 capite parvo, ocellis obsoletis. 



Long. Corp. unc. '2\ ; cap. lin. 2 ; anten. unc. H ; proth. 

 lin. 1| ; mesoth. lin. 4 ; metath. lin. 5 ; abdom. lin. 13-1- 

 hn. 2i = Hn. l:")i ; tegm. lin. 2 ; alar, expans. unc. 3^. 



Phasma armatum, G. R. Gray, Syn. Phasm. p. 26. 



Hab. In Demerara. B.M. 



22. (323.) Phasma flavo-maculatiim. 



Nigrescenti-brunneum ; thorace flavo-maculato, subtus 

 virescenti ; tegniiuibus margine anteriori, liuea media, mar- 

 gineque posteriori viridescentibus ; alls obscure hyaliuis, 

 area costali uervis longitudinalibus ^-iridibus ; pedibus vi- 

 ridescentibus. 



Long. corp. 2" 6'" ; anten. 2" 3'" ; alar, expans. 2" /'". 



Phasma flavo-maculatum, G. R. Gray, Syn. Phasm. p. 25. 

 Hah. In Brasilia. In Mus. Saunders et B.M. 



The type of this species, described from a male specimen, 

 is preserved in the National Collection, which also contains 

 a female, of which a specimen is also contained in Mr. W. 

 W. Saunders's Cabinet. The following are their relative 

 proportions : — 



Long. corp. maris, unc. 2\ ; cap. lin. 2 ; anten. lin. 27 ; 

 proth. lin. If ; mesoth. Im. 5 ; metath. lin. 4 ; abdom. 

 lin. 15 + lin. 3| = lin. 18i ; tegm. lin. 3^ ; alar, expans. 

 unc. 2f . 



Long. corp. foem.imc. 3^; cap. lin. 2\; anteu. unc. If ; 

 proth. lin. 6 ; metath. lin. 5 ; abdom. hn. 20 -|- lin. 5 = 

 lin. 25 ; tegm. lin. 4 ; alse long. Uu. 4-^. 



The head is very glossy, aud the anterior half of the 

 body is marked with minute yellow spots, which assume 

 the appearance of granules on the mesonotum. The head 

 is furnished in the male with three rudimental ocelli, which 

 are almost obsolete ui the female. The antennse are long 



R 2 



