DASYPOLIA TEMPLI. 23 



each of these thoracic segments. The other segments, 

 to the twelfth inclusive, have the usual two pairs on 

 the back of each, and the thirteenth one pair; the 

 anterior larger than the posterior pair, and all gradu- 

 ally diminishing in size from the fifth to the eleventh 

 segment, but on the twelfth they become larger again, 

 and are there transversely oval in shape. 



Each spiracle has a large round spot above and below 

 it, another behind and a small one in front of it ; these 

 two last-mentioned are sometimes both small, and 

 sometimes one of them is absent ; but the two that 

 are above and below the spiracles are larger than any 

 on the back. 



The last larva (sent me on July 25th) I retained, 

 and noticed that before August commenced it had 

 entered the earth to change ; but at the end of August 

 or beginning of September, instead of a moth, I ob- 

 served a myriad of small winged creatures emerging, 

 and, on digging, found a long, conical, whity-brown 

 cocoon, which the little parasitic larvae had constructed 

 over the remains of their victim. These, as mentioned 

 above, were Microgaster alvearius, and it seems a mys- 

 tery how this parasite can lay its eggs upon the larva 

 of D. templi, boring as it does into the leaf-stalks or 

 stems of Heracleum as soon as hatched, and the 

 minute orifice it then makes being soon closed by the 

 exudation of sap. Neither does it show itself again 

 (unless the plant fails to supply sufficient food), but in 

 nature gnaws a hole just below the surface of the 

 earth for its escape. 



Mr. Doubleday most kindly procured for me two 

 pupa-cases from which the moths had emerged, but 

 which were in excellent condition, so that I could take 

 a good figure of them. The pupa is barely an inch 

 long, strong in texture, moderately stout and uniform 

 in bulk, tapering gradually near the abdominal tip, 

 which is terminated by a thick blunt spike ; the rings of 

 the abdomen very plump and deeply divided ; the anal 

 spike is black, all the rest of the surface purplish-brown, 



