86 



ACCOUNT OF THE PHASMIDAE, WITH NOTES ON THE EGGS. 



(9) Acanthodyta spiniventris, n. sp. PI. VIII, Fig. 11 $. 



Testacea, vel fusco-testacea ; alis minimis, parte posteriore sanguineo-tincta ; corpore 

 lateraliter et superne spinoso : pedibus fere inermibus ; capitis fronte bituberculata. 

 . Cerci elongati, intus curvati. 

 Long. corp. 55 mm.; antenn. 17 mm. 



%. Lamina supra-anali ultra anum longe producta, acuminata; appendices antero- 

 iuferiores elongati, lineares, duri, ultra cercos extensi, apicem abdominis ventris attingentes ; 

 operculum subgenitale elongatum, apicem versus attenuatum, apice obtuso, lamina supra- 

 anali brevius ; appendices mediani, elongati sublineares, cercos attingentes ; appendices 

 superiores nulli. Cerci breves sat lati, ad apices obtuse attenuati, margine externo 

 ciliato-setoso. 



Long. corp. 86 mm.; antenn. 20 mm.; capit. post antenn. 5 mm.; pronoti 5 mm.; 

 mesonot. 18 mm.; metanot. (partis alas ferentis) 4 mm.; segm. med. (cumque parte 

 posteriore metanoti haud discreta) h\ mm. ; abdominis 50 mm. ; femor. ant. 29 mm. ; 

 tibia, ant. 38 mm. 



Loc. Lifu. 



Only one pair of the mature Insect was found. The male is much darker than 

 the female in colour. A female nymph well advanced in growth has the spines of the 

 upper surface represented only by minute acute tubercles. 



Egg (PI. IX, Fig. 40): an egg of this species was found in the ovipositor, but was 

 damaged by extraction so that it has lost the operculum. The micropylar area extends 

 the whole length of the egg and is at the farther extremity very distinctly divided 

 into two processes that probably correspond with the attachment of membrane on the 

 inner surface of the capsule. 



Genus. Graeffea. 

 Graeffea. Stal, Recensio Orthopterorum, III. 1875, p. 40. 



The Insects of this genus appear to be peculiar to the Polynesian islands, where 

 they are said to be sometimes very injurious by consuming the foliage of the food- 

 plants of the human inhabitants. 



(10) Graeffea lifuensis, n. sp. PI. IX, Fig. 21. 



$ . Testacea ; prothorace subtiliter, irregulariter granuloso ; alis brevibus, parte 

 membranacea sanguinea. 



G. coccophagae peraffinis ; cercis longioribus, lamina supra-anali medio longiore, 

 acuminata ; segmento mediano magis elongato. 



Long. corp. 118 mm.; antenn. 23 mm.; fern, anter. 34 mm.; cap. post antenn. 6 mm.; 

 pronoti 6 mm.; meson. 20 mm.; metan. 5£ mm.: segm. med. 6 mm.; abdom. 63 mm.; cere. 

 1\ mm.; tegm. 7 mm.; alar. 14 mm. 



The genital operculum is not convex, it is pointed and elongate, extending a little 

 beyond the point of the lamina supra-analis. The superior and inferior genital appendages 

 extend backwards to just the same point ; the inferior are slender and filiform ; the 

 median and superior are short, as they merely form the divided extremities of a broad 

 process; the median pair does not extend quite so far back as the lateral pairs. 



