382 



2101. The four lumbar vertebrae. 



The anapophyses are suppressed on the last vertebra. 



2102. The four sacral vertebrae. 



The transverse process of that of the first and half of that of the second vertebra are rough 

 for the attachment of the ilia. 



2103. Eleven of the caudal vertebrae. 



The neural canal is unclosed above on the eighth. The spines of the four anterior verte- 

 brae are long, and thickened at their summits : the transverse processes of all the vertebrae 

 are long, broad and flattened : they are perforated and deeply notched in the ninth and tenth. 

 One of the detached haemal arches is preserved. 



2104. The right scapula. 



2105. The right humerus. 



There is a wide vacuity between the condyles. 



2106. The right ulna. 2107. The right radius. 



2108. The right femur of the same Porcupine. 



The medullary artery enters below, and to the inner side of, the small trochanter. 



2109. The right tibia. 2110. The right fibula. 



2111. The skull of the Java Porcupine (Hystrix Javanica; Acanthion Javani- 

 cum, F. Cuvier). 



It is more slender in proportion to its length than in the European or African Porcupines. 

 The upper wall of the cranium is less swollen by the development of air-cells. The hinder 

 extremities of both the internal and external pterygoid plates articulate with the rough pro- 

 minences from the auditory bullae. The temporal ridges, commencing from the frontal 

 suture, are feebly marked, and do not unite upon the interparietal to develope a sagittal crest. 

 The anterior boundary of the interparietal continues to be defined, and shows it to be coex- 

 tensive with the hinder half of the parietals between which it is wedged. Both frontal and 

 sagittal sutures are retained. The frontal suture is as long as the parietal one. The nasal 

 bones form long and narrow parallelograms, very slightly expanded posteriorly, where they 



