54 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 56 



PLATE 8 

 Stereoscopic view of the side of the Thorax together with the 



Fig. 23. 



wing-joint. (Magnified 10 diameters 

 Objective 55, Ocular 3.) 



f, 



Photographed with Zeiss binocular ; 



pt2 



aq, Transverse anal vein. 



/, Fossa postalaris. 



fi, Fossa praealaris. 



fii, Fossa anterior. 



gi, Marginal vein. 



lo, Lobulus. 



p, Prsescutum. 



po. Posterior transverse vein. 



pp, Parapleurum. 



pti, Processus pteralis ate i. 



pt2. Processus pteralis alse 2. 

 laa, First depressed (concave) fold of the anterior region ; auxiliary vein. 

 Iba, Crest of first raised (convex) fold of the anterior region. 

 Ilaa, Second depressed (concave) fold of the anterior region. 

 Illba, Crest of third raised (convex) fold of the anterior region. 

 lam, First depressed (concave) fold of the middle region; discoidal vein. 

 Ilbm, Crest of second raised (convex) fold of the middle region. 

 Ilap, Second depressed (concave) fold of the posterior region; anal vein. 

 Ilbp, Crest of second raised (convex) fold of the posterior region. 



ptil, Processus pteralis thoracis II. 



ptA, Pterale A. 



ptB, Pterale B. 



re, Remigium. 



s. Scutum. 



se, Scutellum. 



sp, Spina scutalis. 



sq, Squamula. 



Sq, Squama. 



st, Stigma anterius. 



