94 VETERINARY PATHOLOGY. 



has no stomach. This may be due to lack of sacculation of the 

 embryonic gut. 



Acaudia. A malformed individual in which the defect con- 

 sists in the absence of the tail. An acaudia fox terrier bitch 

 was recently observed, her mother whelped one or tw^o tailless 

 puppies at each whelping. This bitch recently whelped an 

 acaudiac puppy. 



Aprosopus. An individual having no face. 



Agnathus. A term used to designate an individual in which 

 the inferior maxilla is absent. This is common in lambs. 



Amelus. The name of a limbless or legless individual. Amelus 

 is the result of arrested development of leg buds and is usually 

 caused by unequal intrauterine pressure or amniotic adhesions. 



Monopiigitsamclus. A monstrosity in wlhich one posterioi 

 leg is wanting. This is due to arrested development of kg buds, 

 probably due to amniotic adhesions. 



Dipxgiisaiiicliis. The name of a malformed animal in which 

 both posterior legs are absent. Result of arrested development 

 of leg buds. 



M onothoracisamclus and dithoracisamelus are monstrosities 

 in which one and both front legs are absent respectively. 



Apus. A name applied to a malformation in which the feet 

 are absent. This may be the result nf intrauterine amputation 

 or amniotic adhesions. 



j\Iouopygusapus is aa individual in which one hind foot is 

 wanting and a dip}'gusapus, an individual in wdiich both hind 

 feet are absent. 



Monothoracisapus, and dithoracisapus, are names implying 

 the absence of one or both front feet. 



The following malformations are the result of under develop- 

 n'ent or undergrowth. ( H3-poplasia). 



Microccplialus, a term used to designate an individual hav- 

 ing a diminisherl sized head, also used to designate the small 

 head itself. This is probably the result of diminished nutrition 

 to the head and anterior part of the bodv during embryonic and 

 foetal development. 



Micro-cardia. A name applied to an individual having a 

 small heart. This may be due to excessive pressure. 



Mu'roophthahnia. A term used to indicate a malformation in 

 which the eye or eyes are smaller in size than the normal. This is 

 probably the result of insufficient nutrition. 



]\Iicroynatliy. Tlie name of an individual having a diminu- 

 tive inferior maxilla. These are caused by undue pressure or 

 insufficient nutrition. 



