396 F(ETAL BFSTOKIJ. 



Guiiti arranges monstrosities into two classes — Simple and Covi- 

 poiuid. The first comprises eight orders, twenty-six genera, and 

 seventy-three species ; the second includes six orders, twenty-six 

 genera, and fifty-nine species. 



As some veterinarians may prefer Gurlt's classification to that of 

 Saint-Hilaire, and particularly for its practical utility, we give it here : 



CLASS I. 



SIMPLE MONSTROSITIES. 



This class is occupied with a single individual, and refers to an 

 absence of or addition to parts, exaggeration of them, or alteration in 

 their form or position. It comprises 8 Oedees, 26 Geneea, and 73 

 Species. 



OEDER I. — Simple Monsteosities theough Absence of Paets : — 



1. Amoephus. — Absence of conformation ; 1 species : A. globosus. 



2. AcEPHALus. — Headless ; 2 species : A. unipes, A. hipes. 



3. Peeocephalus. — Head defective ; 7 species ; P. j^seudocephalus 

 (apparently without a head), P. aprosopus (head without a face), 

 P. microcephalus (small head), P. agnatkiis (head without a jaw). 

 Varieties : a, P. cKjnathus hjpostomus (mouth a longitudinal fissure 

 beneath the ordinary situation) : h, P. agnathus microstomus (small 

 mouth) : c, P. agnathus astomus (without a mouth), P. bracJu/rhynchus 

 (short face or nose), P. anomatus (without eyes), P. aotus (without ears). 



4. Peeoso:\ius. — The whole of the body defective; 4 species: P. 

 liemiccplialicus (body defective and head absent), P. horridus (horrid 

 deformity), P. elumbis (loins absent), P. pscudoscelus (body defective, 

 with posterior limbs incomplete). 



5. Peeocoemus. — Trunk defective ; 3 species : P. oligospond^jlus 

 (defective vertebrae), P. ecaudatus (without tail), P. anacdoca (without 

 external generative organs). 



6. Peeomelus. — Limbs defective ; 6 species : P. apus (vrithout 

 limbs), P. acliirus (without anterior limbs), P. monocliirus (with only 

 one anterior limb), P. ascehis (without posterior limbs), P. monocelus 

 (with only one posterior limb), F. micromclus (liinhs shortened); with 

 the varieties, P. micromclus microchirus (anterior limb short), P. micro- 

 mclus microscclus (posterior limb short). 



ORDER II, — Simple Monsteosities theough Smallness of 

 Paets: — 



7. Nanosomus. — Limbs and trunk small — dwarf; 2 species: N. 

 pygmaus (short and low, but without disproportion of parts), N. caticeps 

 (cat-faced dwarf). 



8. Nanocephalus. — Small head ; 8 species : N.micromatus (eyes too 

 small), N. brachyotus (ears too short), N. bracliygnotus (lower jaw too 

 short). 



9. Nanocoemus. — Short trunk ; 2 species : N. rectus (vertebral 

 column straight, but very short), N. curvatus (vertebral column short, 

 and curved to one side.) 



10. Nanomelus. — Limbs short ; 5 species : K. brevipcs (all the limbs 



1 Pathologische Avatomie, Berlin, 1883. Article: " Missbildungen." Also Ueber 

 Thierische jMissijebiirten, Berlin, 1877. 



