Earlier Stages of the Cylindrotomina. 363 
1. Poatacrocera, Schin. 
De Geer (Nova Acta Upsal., 1, pp. 66-77, Tab. 6 
(i773); Mem) Hist ime svi, p. dol, Tab: xx., 
figg. 1-16 (1776).—An excellent description of 
the external form and habits of the larva, pupa, 
and imago of Phalacrocera replicata, Linn. 
Gvube (Jahresb. d. Schles. Ges. fiir Vaterl. Kultur, 
1867, p. 59).—A rather detailed description of 
evidently the same larva, but not identified. 
Engel (Ent. Nachr., 1884, p. 260).—Short notice of 
the discovery by him of the same larva upon the 
stems of Ranunculus fluitans, in a lake, in the 
vicinity of Frankfurt-on-the-Oder. 
Giard, Prof. A. (Bull. Soc. Ent. France, 1895, 
p. ccxxxv.).—An interesting notice of the same 
larva, which he found in pools of water among the 
downs between Wimereux and Ambleteuse (Dépt. 
Pas de Calais), hidden in the aquatic moss, 
Hypnum elodes, Spruce. He quotes a number 
of other continental stations. 
2. Cyiinproroma, Macq. 
Schellenberg (Genres des Mouches Diptcres, Ziirich, 
1803).—In French and German. ‘ab. xxxvii., 
fig. 1, represents a Tipuia, wrongly named in the 
corresponding letter-press (pp. 22-23) Tipula 
histrio, Fabr. As I pointed out in 1869 (Mon., 
p- 299), the figures of the larva and pupa make it 
evident that the species is Cylindrotoma distinc- 
tissima, Meig. The text merely says, “ We know 
this larva, which has been found on Viola bijlora, 
Linn. ; we shall give its history in another place.” 
This promised publication has, to my knowledge, 
never appeared. 
Boie (Kroyer Naturh. Tidskr. 11., p. 254, 1838; half a 
page).—Boie did not know of Schellenberg’s pub- 
lication. He gives a short description of the 
larva and pupa, which answers to Schellenberg’s 
figures. He adds: “It deserves to be noticed 
that the green colouring of the larva indicates 
quite a different mode of life from that of other 
Tipulide. Numerous congregations of them were 
