678 PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
The antenne now extend to the middle of the labium; just passing 
beyond the extremities of the mandibles and maxillæ. The suture 
separating the eye-bearing piece from the ante: diii, EAE and 
maxillary pleurites and supra-clypeus, is distinct, the clypeus is now 
very distinct, and as large, seen laterally, as the supra-clypeus, though 
differing from it essentially in form. 
The abdomen is now pointed at the extremity and divided into the 
rudiments of the two anal stylets, which form large acute tubercles. 
The yolk mass is now almost entirely enclosed within the body walls, 
forming an oval mass. 
6. At this stage, the embryo is quite fully formed, and is about . 
ready to leave the egg. The three regions of the body are now dis- 
tinct. The articulations of the tergum are present, the yolk mass be- 
ing yes enclosed by the dorsal walls, The ventral ganglia 
fully formed and are seen laterally to be 
Square, with the square ends opposed, though the 
commissures cannot be distinguished. More care- 
ful observation. will undoubtedly reveal their pres- 
ence. The body is so bent upon itself that the 
extremities of the second maxille just overlap the 
ip of the abdomen. 
The front of the head is now still farther differ- 
entiated. The supra-clypeal piece seems to be 
merged in with the opthalmic ring, the sutures 
between them having disappeared. The insertion 
of the antennz are removed higher up to just in 
front of oe red or rather the eyes have dropped 
down, as . The clypeus is broad and large, . 
me a e labrum is separated from it by a 
The mandibles and maxille are still tu- 
ee, in shape, the teeth of the former not yet 
ae appearing. The two limbs of the labium are now 
ké e side by side, with the prominent spinous 
appendage on the outer edges of the tip. These 
ae spines are the rudiments of the ssi palpi. 
Th 
e abdomen should į are directed upwards and the two claws are sim- 
ae ae of eleven, pseu con- ple, straight, and equal in size. The tip of the ab- 
minute. tr Netthglat domen ends in two unequal pairs of stylets, ter- 
aminating in 2 a long bristle, 6: a Sag 4.) Thegen- 
ken from the 
F Ol ius taken 
