PLATE XXI. 
SiPHONOPHORA CONVOLVULI. (Page 148.) 
Pig. 1. — Apterous viviparous female. The red spots 
are the eyes of the embryos contained within the 
body. 
Pig. 2. — Pupa, which is considerably smaller than 
the larva. 
Pig. 3.— Winged viviparous female. 
Pig. 4. — Head and frontal tubercles of the apterous 
female. The muscles attached to the antennae and 
rostrum are obvious. 
Pig. 5. — Posterior abdominal rings of the viviparous 
female. The cornicles in both larva and imago are 
dilated in the middle. Several embryos are crowded 
about the caudal region ready for birth. 
