230 C. R. Osten Sacken: 
margin, in the axillary cell, and runs obliquely towards the end of 
the auxiliary vein, where it stops short without reaching the costa. 
Hab. Amboina (Doleschall). 
NB. In the author’s description the antennae are called 16-join- 
ted, while in his own drawing 22 joints are distinetly visible, in con- 
formity with the type-specimen in Vienna. 
Idioplasta. 
O. Sacken, Catal. N. Am. Dipt. 1878, p. 36 and 322, note 38. 
Protoplasa O. Sacken, Proc. Ac. N. Sc. Phil. 1859, amended in 
Protoplasta O. Sacken, Western Diptera ete. 1877 (preoce. Leidy, 
Rhizop.)!]. 
(2) Macrochile Loew, in Behrendt, Bernstein etc. p. 57, 1845; 
Loew, Ueb. Bernst. u. Bernsteinfauna, 1850, p. 36; Linn. Ent. 
V, p. 402, 1851; Tab. 2, f. 24, wing; O. Sacken, Monogr. etc. 
IV, p. 318 (preocc. Lepidopt. Macrochilo, 1816; Macrochila 
1829). 
The male of Idioplasta is described for the first time in my 
Western Diptera, p. 208, and in my Catal. N. Am. Diptera 1878, 
p. 202. For further details, comparisons with the allied genera etc. 
see my paper: Die Tanyderina etc. (Verhandlungen Zool. Bot. 
Ges. Wien 1879, p. 517). 
Two species are described, one from the eastern United States 
the other from California (I. vipio O. S. Western Diptera, p. 517). 
Macrochile Loew is represented by M. spectrum of which, as far 
as I know, a single specimen has been found in prussian amber. 
The generic name being preoccupied, there is no sufficient reason 
for not placing the species in the genus Idioplasta. 
Note on Prof. Rondani’s new genera of Tipulidae, proposed 
in his Prodromus Dipterol. Ktalicae, Vol. I, p. 179 —188; 
1856. 
Although Prof. Rondani, in his work on the italian fauna, did 
not reach the Tipulidae, and, although, if he had reached them, he 
would have probably abandoned the sketch of an arrangement of that 
family which he published in 1856, in the first volume of the Pro- 
1] Seudder gives 1879 as the date of Protoplasta Leidy, Rhizop.; 
but it must be earlier, as in my Catal. N. Am. Dipt. the Preface of 
which is dated June 1878 I say on p. 222 that „Protoplasta has in 
the mean time been used in the Protozoa.‘“ Where did I find this 
statement ? 
