PIIASMIDiE. PIIASMA. 



123 



19. (320.) Phasma ambiguum. 

 Plate XIII. fig. 3, male. 



Cinereum ; tegminibus nigris, spina in margine anteriori; 

 area costali absque pallide fulvis, margine cinereo ; corpore 

 nigro (mas et fcem.). 



Long. corp. maris, tin. 19 ; cap. tin. 1 ; proth. tin. f ; 

 mesotb. tin. 2 ; metath. tin. 3 ; abdom. lin. 10 + lin. 2 = 

 lin. 12 ; tegm. lin. 2 ; arte, lin. 1 1|; alar, expans. unc. 2. 



Long. corp. foem. unc. 2£ ; cap. lin. If; proth. lin. l-£ ; 



mesoth. lin. 2\ ; metath. lin. 4^ ; abdom. lin. 14 + lin. 2= 



lin. 16 ; tegm. lin. 2>\ ; alee, tin. 17 ; alar, expans. unc. 3. 



Phasma ambigua, Stoll, Spectr. pi. 25. f. 98. 

 Phasma ambiguum, G. R. Gray, Syn. Pkasm. p. 26. 



Serville, H. N. Orth. p. 269. 



De Haan, Orth. Orient, p. 123. 



Hab. 1 (Stoll); Cayenne (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, none of which are dis- 

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

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

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

 rior and middle tibiae are also slightly marked with paler 

 annuli. 



Pi.ate XIII. Fig. 3. The male, of the natural size. 3 a. The 

 terminal segments of the abdomen of the male seen side- 

 ways. 3 4. 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 longitudinal black 

 streaks. 3 d. The same seen sideways, 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 ; antennis multi-an- 

 nulatis ; mesothorace scabro-spinoso, tinea dorsali media 

 nigra ; alis obscuris ; tegminibus parvis, quadratis ; femo- 

 ribus anticis rectis. 



Long, corp- maris, 1" 10"' ; fcem. 2" 4'". 



Phasma spinicolle, Burmeister, Handb. d. Ent. ii. 585. 

 De Haan, Orth. Orient, p. 123. 



Hab. In 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 ; tegminibus parvis, quadratis, 

 areaque costali brunneis, reticulatis ; alis hyalinis, pallide 

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

 capite parvo, ocellis obsoletis. 



Long. corp. unc. 2\ ; cap. tin. 2 ; anten. unc. \\ ; proth. 

 lin. 1£; mesoth. lin. 4 ; metath. tin. 5 ; abdom. lin. 13 + 

 lin. 2i=liu. l:>\ ; 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-maculatum. 



Nigrescenti-brunneum ; thorace flavo-maculato, subtus 

 virescenti ; tegminibus margine anteriori, linea media, mar- 

 gineque posteriori viridescentibus ; alis obscure hyalinis, 

 area costali nervis longitudinalibus viridibus ; pedibus vi- 

 ridescentibus. 



Long. corp. 2" 6'" ; anten. 2" 3'" ; alar, expans. 2" 7'". 

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



Hab. 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. tin. 2 ; anten. lin. 2/ ; 

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

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

 unc. 2f. 



Long. corp. fcem. unc. 3\; cap. tin. 2\; anten. unc. 1| ; 

 proth. lin. 6 ; metath. lin. 5 ; abdom. tin. 20 + lin. 5 = 

 lin. 25 ; tegm. lin. 4 ; alae long. tin. 4^. 



The head is very glossy, and 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 in the female. The antennae are long 



r 2 



