INSECTA. ak 
in females shorter, arcuate. Labrum retracted. Mandibles strong, 
cruciate. Abdomen elongate, with short petiole; body hirsute. 
Sp. Scolia quadrimaculata F., Dumér. Consid. gen. s. l. Ins. Pl. 31, fig. 2, 
habit. in North America, &c. Most of the species exotic, some very large. 
In the South of Europe occur Scolia hortorum Fasr., Scolia insubrica 
(Scolia interrupta) PANZER, Deutschl. Ins. Heft 62, Tab. 14, &e. 
Note.—The males are distinguished by longer abdomen, trispinose at 
apex (anus tridentate), whence the name of the genus appears to be derived 
(ck@ dos, spina). Feet of females thicker, very hirsute. 
Add sub-genera Meria Iuuie., Latr., Myzine Larr., Tiphia Farr. 
Section II. Zerebrantia. Abdomen in females furnished with 
a borer or ovipositor, sessile in many. Antenne various, usually 
with joints more or fewer than thirteen. Upper capitulum of femur 
mostly distinct, as though forming a second trochanter. 
Amongst these Hymenoptera, which deviate more from the usual 
type, there are many species whose larvee are provided with six 
horny feet. Harri first drew attention to the difference of articu- 
lation between the hip and the thigh, and named these hymenoptera, 
on that account, ditrocha, and those of the former division, on the 
other hand, monotrocha. SuNDEVALL has given a better explanation 
of this disposition, which we have followed in our statement of 
characters ; Arsberdttelse om nyare zoologiska Arbeten 1837—1840. 
Stockholm, 1841, pp. 324, 325. The genus Chrysis according to 
this character ought to belong to the first division. 
A. Entomophaga (Pupivora Lave.) Abdomen petiolate. Larvae 
apodous, mostly living parasitically in other insects. 
Family XVIII. Chrysidides. Inferior wings with no cells, 
but only some longitudinal veins; superior with radial cell long, 
single cubital cell imperfect. Antenne filiform, with thirteen joints 
im both sexes. Abdomen joined to thorax by narrow, very short 
petiole, below plane or vaulted, composed of only three or of four 
conspicuous segments, dentate posteriorly in many. Integuments 
of body hard, smooth. Borer of females inclosed in concealed 
terminal segments of abdomen, receiving one another by inva- 
gination, composed of three sete, the groove of one containing the 
two others. 
The golden-wasps. These insects were thus named on account of 
the shining metallic colours in which they glitter (the abdomen is 
24—2 
