Alexander — Crane Flies 253 



shorter than in this sex of C. hebxsl ; segment two of the flagellum largest, thence 

 gradually decreasing in size to the seventh; eighth flagellar segment slightly 

 enlarged ; terminal segments long-cylindrical with conspicuous verticils. Pro- 

 notum velvety-black. Mesonotal praescutum silvery-grey with three conspicuous 

 velvety-black stripes that restrict the ground-colour to narrow lines; median 

 stripe narrowed behind, cuneiform, anteriorly sjilit by a very indistinct grey 

 line; lateral stripes but narrowly separated from the median stripe; lateral 

 margins of the sclerite narrowly blackened ; scutal lobes grey, each lobe with the 

 centres black, circled with grey ; median area of the scutum and lateral margin of 

 each lobe narrowly blackish ; scutellum grey with a median black stripe ; post- 

 notum black with an anterior median grey spot. Pleura brownish-black, con- 

 spicuously variegated with white spots, these on the mesepisternum, mesepimeron, 

 dorsal margin of the mesosternum, and the lateral sclerite of the postnotum 

 before the origin of the halteres; propleura narrowly white; a white spot above 

 the hind coxa; a conspicuous orange triangular area on the dorsal pleurites 

 immediately caudad of the anterior spiracle and before the wing-root. Halteres 

 black, the bases a little paler. Legs with the coxae conspicuously light grey 

 pruinose ; remainder of the legs black ; claws of the male with two small teeth 

 beneath. Wings with a strong reddish-brown tinge, much darker than in 

 C. helm.'ii or (\ tillyardi, brighter at the wing-base and in the costal and subcostal 

 cells; cells M, Cu^ and first A with small triangular paler centres. Abdominal 

 tergites velvety-black, the basal half of segment two and segments seven to nine 

 orange; the black tergites each have a conspicuous circular white spot at the 

 lateral ends, and tergites two to five have an additional submedian spot near the 

 anterior margin on either side; sternites fiery-orange, the caudal margins of 

 segments four to six very narrowly lilackish -brown. 



Hah. New South Wales: Dorrigo. Type, I. 12167. 



This magnificent crane-fly is dedicated to the late Frederick A. A. Skus(% 

 the great pioneer student of Australian Tipulidae, author of the genus 

 Clytocosmus. If it were not for the constancy between the sexes of C. heJnisl 

 Skuse as regards body colouration, I woidd have regarded this fly as representing 

 the male sex of C. tillyardi Alexander ; however, the colouration of the thorax of 

 the two species is so nearly diametrically opposite that I cannot believe that they 

 represent a single species. More material will settle the status of this fly. C. 

 lichtivardti liiedel, recently described (^) from North Queensland, also has the 

 colouration similar in the two sexes. 



(1) Riedel, Arch, f, Naturgesch,, Ixxxv, 1920, p. 85-88, 



