BY G. H. HARDY. 259 



AsiLUS ALCETAS Walker. (Text-fig. 12.) 



Asiliis alcetas, Walker, List Dipt. Brit. Mus., ii., 1849, p. 425; and vii., siippl. 3, 



1855, pp. 729. 732, and 736. 

 Itamus alcetas, Schiner, Verb, z.-b. Ges. Wien., xvii., 1867, p. 408. 

 Neoitamus alceta.'^, Kertesz, Cat. Dipt., iv., 1909, p. 290. 

 Asilus alcetas, Rieardo, Ann. Mag. Nat. Hist., (8), xi., 1913, p. 447: Wliite. Proc 



Boy. Soe. Tas., 1916, p. 181. 

 Asilus trachaliis. Walker, Ins. Saund. Dipt. 1851, p. 143; Walker. List Dipt. Brit. 



JIus., vii., suppl. 3, 1855, pp. 730 and 738. 

 Synonymy. — The synonymy is given on the authority o£ Miss Rieardo, who 

 states that the species refen-ed by Schiner to the genus Itamus, now Neoitamus, 

 must be an altogether different species from the type. Although this is probably 

 correct, there is not sufficient information in the description to allow Schiner's 

 species to lie identified with any known species of Neoitamus and, moreover, 

 Asilus alcetas Walker has a very striking resemblance to Neoitamus. 



Description. — The shape of the male genitalia is more or less globular and 

 similar to that of A. murimis Macciuart, under which further particulars are given. 

 Hab. — Tasmania : Mount Arthur, one male and one female collected by Mr. 

 r. M. Littler, to whom the writer is indebted for these specimens now in the 

 collection of the Australian Museum. This is the only species of the genus 

 definitely known from the State. 



