GLOSSARY. 147 



lymphatic glands, and form the framework for the stroma 

 of those organs. Also to two pairs of plates in the foetus 

 from which the parts of the skull above and in front of the 

 mouth are developed. 

 Trabs cerebri (L. beam or rafter of the cerebrum). Another 



name for the corpus callosum of the brain. 

 Trache'a (Gr. trachus, rough). The windpipe in theVertebrata. 

 Also applied to the respiratory tubes which are distributed 

 through the body in some insects. 



Trache'lo-acrdmialis (Gr. trachelos, the neck ; akron, the sum- 

 mit; omos, the shoulder). A muscle which in some 

 Vertebrata passes from the cervical vertebrae to the scapula. 

 Trache'lo-mas'toid (Gr. trachelos, the neck). A muscle passing 



from the neck to the mastoid process of the skull. 

 Tracheobran'chise (Gr. trachea, the windpipe ; branchta, a gill). 

 The name given to the respiratory organs of some aquatic 

 insect larvae, which consist of tubes similar to the trachea 

 of some insects. 



Trac'tus interne dio-latera'lis (L. intermediate lateral tract). 

 The name given to a small group of cells in the spinal cord. 

 Trac'tus spira'lis foraminulen'tus (L. tractus, a tract ; spirdlis, 

 spiral; foramen, an opening, window; lentus, tough). 

 A furrow in the cochlea in which the cochlear branches of 

 the auditory nerve lie. 



Tragu'lidse (Gr. tragos, a goat). A group of the Ruminantia. 



Tra'gus (Gr. tragos, a goat). The eminence in front of the 



opening of the external auditory canal ; so named because 



sometimes possessing hairs like a goat's beard. 



Transversa'lis abdo'minis (L. transverse of the abdomen). A 



muscle passing from the lower ribs to the pubis. 

 Transversa'lis cervl'cis (L. transverse of the neck). A muscle 

 passing from the anterior dorsal vertebrae to the transverse 

 processes of the cervical vertebrae. 



Transversa'lis men'ti (L. transverse of the chin). A small occa- 

 sional muscle passing below the chin to the neck. 

 Transversa'lis pe'dis ") (L. transverse of the foot). A muscle 

 Transver'sus pe'dis j which in man and the apes is inserted 



in the hallux and in the metatarsals of the foot. 

 Transver'sus nu'chae (L. transverse of the neck). An occasional 



pair of muscles found in the region of the neck in man. 

 Transver'sus or'bitae (L. transverse of the orbit). A muscle 

 occasionally found in man, which passes across the upper 

 surface of the eyeball. 



