INSECT A. 371 



females shorter, arcuate. Labrum retracted. Mandibles strong, 

 :ruciate. Abdomen elongate, with short petiole; body hirsute. 



Sp. Scolia quadrimaculata F., DUMER. 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 FABR., Scolia, insubrica 

 (Scolia interrupta) PANZER, Deutschl. Ins. Heft 62, Tab. 14, &c. 



Note. The males are distinguished by longer abdomen, trispinose at 

 apex (anus tridentate), whence the name of the genus appears to be derived 

 ((T/ccDXos, spina). Feet of females thicker, very hirsute. 

 Add sub-genera Meria ILLIG., LATK., Myzine LATR., Tiphia FABR. 



Section II. Terebrantia. Abdomen in females furnished with 

 borer or ovipositor, sessile in many. Antennse various, usually 

 ith joints more or fewer than thirteen. Upper capitulum of femur 

 ostly distinct, as though forming a second trochanter. 



Amongst these Hymenoptera, which deviate more from the usual 

 type, there are many species whose larvae are provided with six 

 horny feet. HARTIG 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; Arsberattelse 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 LATR.) Abdomen petiolate. Larvae 

 )odous, mostly living parasitically in other insects. 



Family XVIII. Chrysidides. Inferior wings with no cells, 

 ut only some longitudinal veins ; superior with radial cell long, 

 ngle cubital cell imperfect. Antennae filiform, with thirteen joints 

 both sexes. Abdomen joined to thorax by narrow, very short 

 etiole, below plane or vaulted, composed of only three or of four 

 onspicuous segments, dentate posteriorly in many. Integuments 

 : body hard, smooth. Borer of females inclosed in concealed 

 irminal segments of abdomen, receiving one another by inva- 

 ination, composed of three setge, the groove of one containing the 

 svo others. 



The golden-wasps. These insects were thus named on account of 

 the shining metallic colours in which they glitter (the abdomen is 



242 



