PLATE XVII 



C., Sc., 



1 L 6 L. 

 a.c.v. 



m.c.v. 



c.c. 

 sc.c. 

 1st m.c, 

 2nd m.c. 

 sm.c. 

 2 sm.c. 

 1 p.c. 

 2p.c. 



Wing Venation 



Figure 1. Comstock and Needham's Urotype. 



Figure 2. Anopheles. 



Figure 3. Haematopota. 



Figure 4. Stomoxys. 



Figure 5. Glossina. 



Reference Letters 



COMSTOCK AND NEEDHAM'S NOMENCLATURE 



C. 



Sc. 



R1-R5. 



M1-M4. 



Cul and Cu2. 



Anl-An3. 



r.m. 



m.cu. 



cu.an. 



Costa. 



Subcosta. 



The five divisions of the Radial vein. 



The four divisions of the Median vein. 



The two divisions of the Cubital vein. 



The three anal veins. 



The radial median cross-vein. 



The median cubital cross-vein. 



The cubital anal cross- vein. 



The cells are indicated by the initial letter of the vein in front 

 of them, preceded by the cardinal number. Thus, 3rdR., the 

 third radial cell. 



THE OLDER NOMENCLATURE 



The Veins 



Costal and subcostal veins. The 



latter is also termed the auxiliary 



vein. 



The longitudinal veins. 



Anterior, upper, or supernume- 



. 

 rary cross-vein. p.c.v. 



The middle cross- vein. The vein i h. 



given this name in mosquitoes ax. 



corresponds to the anterior cross- ! a.b.c.v. 



vein in Stomoxys, etc., and is the p.b.c.v. 



radial median vein. The anterior 

 cross-vein, so called, is a super- 

 numerary cross- vein between the 

 second division of the radial vein 

 and the one posterior to it. 

 Posterior or lower cross-vein. 

 Humeral cross- vein. 

 Axillary vein. 

 Anterior basal cross-vein. 

 Posterior basal cross-vein. 



The Cells 



The costal cell. 



The subcostal cell. 



The first marginal cell. 



The second marginal cell. 



The submarginal cell. 



The second submarginal cell. 



The first posterior cell. 



The second posterior cell, anterior 



3 p.c. 



4 p.c. 



1 b.c. 

 2b.c. 

 d.c. 

 an.c. 



Third posterior cell. 

 Fourth posterior cell, 

 posterior forked cell. 

 First basal cell. 

 Second basal cell. 

 Discal cell. 

 Anal cell. 



second 



forked cell, first posterior forked cell. 



an. 

 al. 



Anal lobe. 

 Alula. 



Lobes of the wing- 

 as. 

 tq. 



Antisquama, or antitegula. 

 Squama, or tegula. 



