346 
ZOOLOGICAL LITEKATUllE. 
Worte uber den Hermaphroditism us der Insecten iiber- 
haupt. Stettiner entom. Zeitung, 1869, pp. 235-255. 
In this paper Speyer describes two hermaphrodite specimens 
of Sphinx [JDaphnis) nerii, reared by R. Grenzenherg at Danzig 
from among a brood of 60 pupie, and makes some general re- 
marks on the occurrence of hermaphroditism in Lepidoptera, 
and on the various theories which have been proposed to account 
for it. 
Speyer, A. Bemerkungen iiber den Bau und die systematische 
Stellung der Gattung Acentropus, Curt. Ibid. pp. 400-406. 
General Notes. 
R. C. R. Jordan disputes tlie received classification of the 
Lepidoptera (Ent. M. Mag. vi. p. 152). He is inclined to place 
them between the Trichoptera and Hymenoptera, and regards 
their affinity to the Diptera as more remote. He thinks that 
the Sesiidce have a true homological resemblance to tlie Hyme- 
noptera, and that in a natural series we should place the genus 
Trochilium at the beginning of the Lepidoptet'a, and the Psy- 
chid(Bf or AcentropuSf at the end. 
Zeller (Stettin, entom. Zeitung, pp. 381-385) gives a trans- 
lation of Wallengren^s detailed classification of the neuration in 
Lepidopteray and of the characters of the three groups into which, 
following Dumeril, he divides the Heterocera {Closterocei'a, Ne- 
matocertty and Chetocera). 
Keferstein (Stett. ent. Zeit. pp. 220-222) discusses the pro- 
bable number of Lepidoptera now existing in the world. He 
estimates the number of known species of diurnal Lepidoptera 
at 5109 ; and allowing for new discoveries on the one hand, and 
the elimination of varieties on the other, he assumes the actual 
number to be about 6000. Staudinger enumerates 392 Euro- 
pean (?) species, which Keferstein takes as 400 in round num- 
bers. He then computes Europe as the fifteenth part of the 
world ; and taking the number of European Heterocera in Stau- 
dinger^s Catalogue in round numbers, he multiplies them by 15, 
and arrives at the following results as representing the probable 
number of existing species : — 
Papilionida3 
6,000 
species, 
Sphingidae 
2,850 
Noctuida3 
15,000 
•n 
Geometridae 
10,800 
)} 
Pyralidae 
805 
Tortricidae 
8,550 
» 
Tineidae 
21,750 
V 
Pteroplioridae . 
1,275 
V 
Alucitidao 
225 
V 
Totul. . . . G/,255 
