PHASMID^ IX THE BlilTlSH MUSEUM. 471 



Megacrania Batesii, sp. U. 



Platycrania alpheus, var., Bates, Trans. Linn. Soc. Lond. xxv. p. 347 (1865). 



The type of 31. alpheus, Westwood, from Ceylon, tas the thorax but slightly granulated, 

 the tegmina nearly round, and the hind wings very short : " tegni. lin. 7|, alar, expans. 

 lin. 26." But in all the specimens from the Malayan and Papuan Islands the thorax is 

 very strongly granulated, the elytra are more oval, and the wings are much larger. All 

 the specimens in the British Museum are females : they are from the Solomon Islands, 

 Aru, and Kei Dulan. The Philippine specimens, one of which is immature and the other 

 has damaged wings, probably belong to this species. Bates mentions specimens from 

 Goram, Gilolo, and New Guinea, and describes a supposed male from Amboina. The 

 dimensions of the tegmina and Avings (on the same scale as Prof. Westwood's measure- 

 ments) are as follows in the Solomon Island specimen, which is a very tine one, measuring 

 upwards of 5 inches in length : — Lmgth of tegmina, 8 lines ; expanse of wings, 2 in. 

 101 lines. 



Are,hid-5;us Stali, sp. n. 



Hale. Slender. Head black, with a large reddish spot in front of the vertex, 

 extending from before the autennoe (the two basal joints of which are likewise reddish) 

 to one-third of the distance between tlie eyes and the occiput ; tliis patch is W-shaped 

 behind. Prothorax and metathorax black or deep chocolate-brown, with a broad rufo- 

 testaceous stripe on each side of the upper surface ; the space between is dotted with the 

 same colour. Abdomen luteous, brown aljove, except on the last four segments ; the last 

 three, however, have an irregular reddish stripe in tlie middle line above, and the cerci 

 are red, lined with yellow on the sides. Tegmina and wings blackish, with yellow costa 

 and nervnres. Wings reaching nearly to the end of the sixth segment. Coxae black, 

 lined or spotted with yellow ; femora very slightly denticulated before the extremity. 



Female rather stout, yellowish green, head with a broad black band on the sides, 



expanding in front of the eyes, and extending, varied with yellow, over the upper part of 



the face ; coxse striped with black below, and front coxae also above; legs pubescent, 



reddish, spotted Avith yellow ; middle femora towards the base, and hind femora, 



very finely denticulated ; tegmina and wings brown or reddish brown, with the costal 



area and the nervures brown. Wings short, only just passing the fourth segment 



of the abdomen ; abdomen wide in the middle, and then tapering ; the segments of 



nearly equal length, except the last three, of which the middle one is nearly twice 



as long as the other two, which are much shorter than the preceding segments of the 



abdomen. 



Dimensions. ^ j _ 



millim. millim. 



Long, corporis 60 86 



„ capitis 5 10 



„ pronoti 3 5 



„ mesonoti 10 16 



„ femorum anticorum .2-i 30 



„ „ medianoruui \'Z 13 



„ „ posticorum 15 20 



SECOND SEELES. — ZOOLOGY, VOL. VI. 63 



