(xi) 
si bien decrite et figuree par Audouin en 1840. (Les insectes nusibles a la 
vigne, p. 189.) J’éspere que cette communication intéressera nos collegues 
de la Société Kntomologique et vous pourrez leur assurer que je ne 
négligerai rien pour la completer ultérieurement.” 
Mr. C. O. Waterhouse exhibited diagrams and read the following :— 
Remarks on the Types of Cynips psenes and Cynips sycomori in the 
Linnean Collection. 
“At the last meeting of this Society some remarks were made 
respecting the Cynips psenes and Cynips sycomori, with special reference 
to the specimens in the Linnean Collection. In consequence of that 
discussion I have taken an opportunity of visiting the Linnean Society, 
and have made a careful examination of the specimens now there. 
“T found under the head of Cynips two sets of specimens belonging to 
two species. ‘The two sets are mounted exactly in the same manner, and 
(what is most peculiar) on rice-paper. 
“ The first set consists of five specimens, all of the same species. On 
the rice-paper itself is written ‘Sycomori,’ and below that something which 
appears to be ‘ex Cairo 1730,’ or it is more probably ‘1750.’ 
“ This insect is pitchy black, highly polished; the mandibles, the front 
margin of the head and a narrow space between two longitudinal frontal 
furrows are pale pitchy testaceous; the femora are pitchy, the tibie and 
tarsi very pale yellowish testaceous. At the back of the head there is an 
oval impression, and in front of this I think I detect an ocellus, and 
another on each side of the impression close to the basal margin. 
I mention these only with some reserve, as the dots alluded to are so 
extremely small that I could not be certain as to their being ocelli. On 
the under side of the head I find no traces of the curious ovate, striate 
appendages characteristic of Blastophaga. The antenne are wanting in all 
the specimens. The abdomen has three anal appendages which are nearly 
as long as the whole insect, pale testaceous, the two outer ones dusky, and 
slightly thickened at the apex. 
“These specimens agree very fairly with Hasselquist’s description of his 
Cynips cycomori (‘Iter Palestinum,’ 1757, p. 426). He states, however, 
that the legs and aculeus are ‘ex albido ferruginei, apice pedum saturate 
ferrugineo.’ The specimens in question have the femora pitchy, with the 
tibie and tarsi very pale; and the aculeus is pale, with the apex dusky. 
T do not think much stress should be laid on this slight discrepancy. It 
must be remembered that the specimens are only about a line long, and 
that magnifying powers 180 years ago were not what they are now; he 
himself states that the claws appeared to be wanting, or at least were not 
visible ‘ oculo mediocriter armato.’ 
“With regard to the writing on the paper, I may say that T believe it 
