628 
DE. GrtJNTHEE ON THE ANATOMY OE HATTEEIA. 
Fig. 18. Front view of epistropheus. 
Fig. 19. Back view of the same. 
Fig. 20. Inner view of the middle portion of the abdominal sternum. 
a. Anomalous joint between central and lateral pieces of abdominal rib. 
b. Intermediate (floating) abdominal rib. 
c. Dilated' lower piece of heemapophysis. 
Fig. 21. The five anterior caudal vertebrae, lower view. a. Hsemapophysis. 
Fig. 22. Vertical section of three dorsal vertebrae. 
Fig. 23. Vertical section of four (7th to 10th) caudal vertebrae, a. Epiphysial line 
passing through the middle of centrum. 
Fig. 24. Isolated rib of 17th vertebra. 
a. Upper (dorsal) hsemapophysial piece. 
b. Lower (ventral) hsemapophysial piece. 
c . Bight half of abdominal rib. 
Fig. 25. Separate view of scapula and coracoid. 
d. Cartilaginous ; and e, osseous portion of coracoid. 
f. Cartilaginous ; and g, osseous portion of scapula. 
h. Acromial tuberosity. 
Fig. 26. Sternum with abdominal ribs. Bones of the shoulder in their natural position. 
a. Sternum, b. Episternum. c. Clavicle, d-h, as in fig. 25. 
Fig. 27. Lateral; and fig. 28, lower view of pelvis. 
a. The two sacral vertebrae. 
b. Os ilium. 
c. Uncinate process of os pubis. 
d. Tuberositas ischii. 
Fig. 29. Vent with the reticulated openings of the paired anal gland. A scalpel is 
introduced on one side to press the gland outwards. 
Fig. 30. Vertical; and fig. 31, transverse section of the anal gland (3 X natural size). 
a. Vacuity behind external opening. 
b. An unusually broad septum. 
PLATE XXVIII. 
Fig. 32. Muscles of ventral region. 
a. Musculus pectoralis major. 
b. Part of outer layer of musculus obliquus externus. 
c. Subcutaneous fibrous tissue. 
d. Musculus rectus. 
e. Ninth ; and e', eleventh abdominal rib with corresponding hsemapophyses. 
f. Abdominal fascia. 
g. Three of the transverse series of ventral plates. 
