81 



NOTES ON SOME E EM ARK ABLE TASMANIAN 

 INVERTEBRATES. 



By Arthur M. Lea, F.E.S., etc. 



(Read July 8th, 1902.) 



(Issued July 23rd, 1902.) 



(Plate.) 

 ^ Under the above heading I propose from time to time to 

 give notes on some remarkable Tasmanian insects, aiid 

 probably other invertebrate forms of life. The notes, when- 

 ever possible, will be illustrated with sketches. The present 

 deals with one of the walkiufj- stick insects, being the first 

 record of the occurrence of this remarkable family {Phas- 

 midce) in Tasmania. 



Acrojjhylla tas?naniensis, u. sp. 



Of a dingy, testaceous brown ; wings black, costal area on 

 its basal half variegated with yellow and black, the outer 

 half testaceous brown. Antennae very finely pubescent. 

 ||;:Head without granules, anterior half wrinkled; ocelli 

 absent. Antennas thin, joints 23 in number, first the length 

 of second and third combined, second slightly more than 

 half the length of third, terminal joint almost the length of 

 the three preceding combined. Prothorax not quite as long 

 as head, surface wrinkled, and with a few very small 

 granules. Mesothorax more than twice the length of pro- 

 thorax and head combined, with small scattered spines. 

 Tegmina, nearly three times as long as wide, apex rounded, 

 concealing about half the length of the folded wings. Wings 

 about once and one-half as long as wide, the costal area about 

 one-third of the whole. Abdomen about two-thirds of the 

 total length of body, fifth segment inflated on each side 

 posteriorly, sixth raised in middle of base ; anal styles long, 

 parallel-sided, somewhat wavy, apex rounded. Meso- and 

 metasternum with a few small granules ; ovipositor longer 

 than three apical segments. Legs long and thin, anterior 

 femora serrate, the others with small spines, of w^hich the 

 largest are on the middle of the upper surface ; tibiae feebly 

 spinose (the anterior almost bare of spines), the intermediate 

 each with a large tooth on the upper surface before the 

 middle. 



Lengths in millimetres : — Head, 8 [*5^] ; j^rothorax, 7 

 [5] ; mesothorax, 31 [19] ; metathorax, 16 [13] ; abdomen 

 (exclusive of anal stvles), 89 [54] ; antennae, 26 [11^] ; anal 

 styles, 20 [8]; anterior femora, 39 [2.3], tibiae, 42 [26], 

 tarsi, 16 [11] ; intermediate femora, 28 [18], tibiae, 30 [18], 

 tarsi 13 [8^] ; posterior femora, 34 [20], tibi», 38 [22], 



