196 ENTOMOLOGICAL SOCIETY 
mognathus. With the parasitic Hymenoptera they are comparatively 
abundant. They are recorded among the Ichneumonidce, in TrtcAemma, 
and Cymodusa ; among the Braconidae in Ckcenusa and Chorebus ; among 
Chalcididie in Brasema, Lutnes, Aseirba, Cleonymus, Micradelus, Isocyr- 
tus, Halizous, and Trichoglenes ; among the Proctotrupidse in a number of 
genera, among which may be mentioned Oxylabis. Belyta, Synacra, Pan- 
tolyta, Zygota, Aclista, Acropiesta, Anectata, Pantoclis, Macrohynnis, 
Xcnotoma, Leptorhaptus, and Cine f us. 
Recent examination of other genera shows that these hairy eyes are 
much more abundant than has been heretofore noticed. In the common 
honey bee the hairs are plainly visible to the naked eye. They are fine, 
silky, yellowish in color, very closely set, but not interfering with a 
direct view of the facets, and do not occur at every angle. Some of the 
hairs are o.2 mm long. \r\Melissodcs I have been able to observe them, 
although they are very short and fine and barely perceptible with a one- 
quarter-inch lens. Among the Encyrtinse I have found them in some 
species of Encyrtus and in all species of Copidosoma examined. I have 
also found them in the Entedonid genus Ckrysockaris, and in the Scelionid 
genus Teleuomus. All of the species of the genus Coccophagns which I 
have described have hairy eyes, the hairs plainly seen under 140 diam- 
eters. 
None of rt\eyello?v species ofAphelinus have these eyes, but the only black 
species A. malt has the hairs as plainly as in Coccophagus, although 
in antennal structure and wing characters it plainly belongs to the 
former genus. In all ot these Chalcids there is no question of degree of 
hairiness, for in the smallest species of Coccophagus the hairs can be seen 
quite plainly with a power of 55 diameters, becoming more and more dis- 
tinct, with higher powers, until at 140 diameters they are very distinct. 
With the non-hairy-eyed species, however, a power of 700 diameters fails 
to show any but a plain surface. As nearly as can be seen in these smaller 
Chalcids the hairs are situated one at each angle of a facet. Their length 
in Coccophagus californicus is .oo57 mm . 
From the intimate connection of these hairs with so important an organ 
as that of sight it would seem at first glance that their presence or absence 
should form an important classificational character ; but after a careful 
review of the ground, and taking into consideration that they occur in 
almost isolated genera scattered through different families, and not related 
in habits in any way, we must come to the conclusion that they are func- 
tionless or of slight use to the species, and probably of no more value as 
classificatory characters than pilose growths upon any other part of the 
epidermis. 
Mr. Smith said that among the Lepidoptera three variations 
were found in the eyes, viz., the naked, the lashed, and the hairy. 
The term " lashed" was used when the eyes had a fringe of hair 
around the margin. The question of having hairy or naked eyes 
