POST-EMBRYONIC DEVELOPMENT OF CULEX. 191 
EXPLANATION OF PLATE V. 
Fig. 1. Side view of the male pupa (xX 10). 
Fig. 2. Ventral view of the female pupa, partially ex- 
tended (x 10). 
Figs. 3 to 6. Successive stages in the metamorphosis of 
the epithelium of the hinder part of the stomach 
(X 225). 
Fig. 7. Sagittal section of a very young female pupa 
(X 50). 
Ant. antenna; Ao. aorta; At. respiratory siphon ; 
B. buccal chamber; CG. cerebral ganglion; D. gastric 
pouch; Ff. fia; Fel. femur of the first leg; G. ganglia; 
Gn. outgrowth of “ninth segment,” within which the 
gonapophyses develop; Hr. halter; H. head; Ht. heart ; 
In. intestine; Lb. labium; Lbr., Lr. labrum; MZ. Malpi- 
ehian cecum; J/.dp. its opening into the intestine; 
MS. mesosternum; Jt. metasternum; Mz. maxilla 
(first); Mp. its palp; NC. nerve connectives and ventral 
cord; Oc. ocellus: Od. median oviduct (‘‘vagina’’); 
Op. compound eye; P. prosternum; f. rectum; S. aper- 
ture of salivary duct; SW. salivary duct; SG. subceso- 
phageal ganglion; Sv. larval respiratory siphon introverted 
into eighth segment ; Sp. spermathece ; St. stomach; Val, 
Ya 2. proximal joints of tarsi of first and second legs; 771, 
Ti 2, Ti 3; Tibie, Tr. Trachee ; W. Wing. 
I., I1., I11., etc., first to eighth segments of abdomen. 
