328 CLASSIFICATION OF ANIMALS. 



auricle ; the blood is cold and white ; and the animals are furnish, 

 ed with antennas or feelers. 



Class 6. Vermes, or worms. The characters are the same with 

 those of class 5. only the animals have no antennae, and are furnish- 

 ed with tentacula. 



The first class, Mammalia, is subdivided into seven orders ; the 

 characters of which are taken from the number, structure, and situ, 

 ation of the teeth. 



Order 1. Primates: these have four incisores, or fore-teeth, in 

 each jaw, and one dog-tooth. N. B. By one dog tooth, Linnaeus 

 means one on each side of the fore-teeth in both jaws. This order 

 includes four genera, viz. homo, simia, lemur, vespertilio. 



Order 2. Bruta: these have no fore-teeth in either jaw. This 

 order includes seven genera, viz. rhinoceros, elephas, trichechus 

 bradypus, mvrmecophaga, manis, dasypus. 



Order 3. Ferae : these have, for the most part, six conical fore- 

 teeth in each jaw. This order includes ten genera, viz. phoca, canis- 

 felis, viverra, mustela, ursus, didelphus, talpa, sorex, erinaceus. 



Order4. Glires : these have two fore-teeth in each jaw, and no 

 dog-teeth. This order includes ten genera, viz. hystrix, lepus, 

 castor, mus, sciurus, myoxus, cavia, arotomys, dypus, horox. 



Order 5. Pecora : these have no fore-teeth in the upper jaw, 

 but six or eight in the under jaw. This order includes eight 

 genera, viz. camelus, moschus, giraffa, cervus, antelope, capra, ovis, 

 bos. 



Order 6. Bel 1 use : these have obtuse foreteeth in each jaw. 

 This order includes four genera, viz. equus, hippopotamus, sus, 

 tapir. 



Order J. Cete, or whale kind these have no uniform character 

 in their teeth, being very different in the different genera ; but are 

 sufficiently distinguished from the other orders of mammalia, by 

 living in the ocean, having pectoral fins, and a fistula or spiraculum 

 upon the head. This order includes four genera, viz. monodon, 

 balaena, physeter, delphiuus. 



The generic characters of the mammalia are, like those of the 

 orders, almost entirely taken from the teeth, excepting in the ves- 

 pertilio ; which, besides the character of the order derived from the 

 teeth, has this farther mark, that there is a membrane attached to 

 the feet and sides, by means of which the creature is enabled to fly : 



