Henry L. Bruner ala 
The median part of the sinus orbitalis extends backward below the 
floor of the cranium until it reaches the posterior margin of the cartila- 
ginous plate, solum supraseptale Gaupp, behind which the sinus is in- 
vaded by the optic nerves. At the level of the chiasma the sinus is con- 
tinuous with the vena jugularis interna and the secondary connection of 
the vena cerebralis media, as previously described. 
Into the sinus orbitalis discharge practically all of the veins of the 
anterior region of the head, and one large postorbital vein. The chief 
tributaries are the following: (1) Vena maxillaris, (2) vena nasalis 
dorsalis, (3). vena frontalis, (4) vena subseptalis, (5) vene palpebrales, 
(6) vena supratemporalis, (7) secondary connection of the vena cere- 
bralis media. 
1, VENA .MAXILLARIS (v. ma., Text Figs. 2 and 3; Figs. 2 and 3, 
c 
Plate I1).—The vena maxillaris of Lacerta agilis begins in the vena 
rostralis (v. r., Text Fig. 2), a subcutaneous vein which forms an irregu- 
lar ring about the rostrum and receives small tributaries from the skin 
and deeper parts. Through the foramen apicale the vena rostralis re- 
ceives on each side a vena medialis nasi (v. m. n., Text Fig. 2), which 
drains the tissues immediately lateral to the septum nasale. The chief 
tributary of the medial vein is the vena supraseptalis lateralis, which lies 
on the dorsal aspect of the septum nasale, where it is formed by the 
bifurcation of a vena supraseptalis media (v. s. m., Figs. 2 and 3, Plate 
II). 
SIG More WOES TUDE WEISS wahKIaNrAR Ve C55, eh Cs Wes a (Or Wen Vn (GC On im Cy 1m Oe 
nerves described in the text; s. a., sinus articularis; s. J. n., sinus lateralis 
nasi; s. m. n., Sinus membrane nictitantis; s. 0., sinus orbitalis; s. p. l., sinus 
palatinus lateralis; s. p. m., sinus palatinus medius; s. p. t. @., Sinus pala- 
tinus transversus anterior; s. pr., sinus prooticus; s. V., secondary connec- 
tion of the vena cerebralis media; s. v. n., sinus vestibuli nasi; v. b. m., vena 
bucco-mandibularis; v. c. d., vena capitis dorsalis; v. c. m., vena cerebralis 
media; v. c. m’., primary connection of the vena cerebralis media with the 
vena jugularis interna; v. c. m. s., vena cerebralis media secunda; wv. ¢. p., 
vena cerebralis posterior; v. fr., vena frontalis; v. hy., vena hypophyseos; v. /., 
vena jugalis; v. 7. e., vena jugularis externa; v. 7. i., vena jugularis interna; 
v. l. c., vena longitudinalis cerebri; v. l. n., vena lateralis nasi; v. l. s., vena 
labialis superior; v. m., vena mandibularis; v. m. e., vena mandibularis 
externa; v. m. i., vena mandibularis interna; v. m. i. d., dorsal part of the 
vena mandibularis interna; v. m. i. v., ventral part of the vena mandibularis 
interna; v. m. n., vena medialis nasi; v. maz., vena maxillaris; v. n. d., vena 
nasalis dorsalis; v. 0., vena cesophagea; v. par., vena parietalis; v. p. 7., vena 
palpebralis inferior; v. p. s., vena palpebralis superior; v. pf., vena pre- 
frontalis; v. pt., vena pterygoidea; v. qg., vena quadrata; v. r., vena rostralis; 
v. SO. a., vena supraorbitalis anterior; v. so. p., vena supraorbitalis posterior; 
v. s&. t., vena supratemporalis; v. sp., vena spinalis; v. ¢. a., vena tympanica 
anterior; v. t. 7., vena turbinalis inferior; v. ft. p., vena tympanica posterior; 
v. t. s., vena turbinalis superior; VIIJ, IX, X, roots of cranial nerves; VIJg., 
ganglion facialis; /Xg., ganglion glossopharyngei. 
