PARASITOLOGY. 15 



Genus and Species Argas Miniatus. 



Ornithodoros Megnini. 



Family [xodidae 



Genus and Species Rhipicephalus Sangui- 

 neus. 

 Ixodes Ricinus. 

 Margarapus Annulatus. 

 Boophilus Australis. 

 Dermacentor Electus. 

 Derma'centor Reticula- 



tus. 

 Amblycmma America- 

 num. 



Order Linguatulida 



Genus and Species Linguatula Rhinaria. 



Fungi Trichophyton Tonsur- 

 ans. 

 Achorion Schoenleinii. 

 Achorion Keratophagus. 

 Saccharomyces Albicans. 

 Actinomyces Bovis, 



INSECT PARASITES. 



The life cycle of most insect parasites is divided 

 into four stages, viz.: oval, larval, pupal and adult. 



The oval stage is the first stage— the egg. 



The larval stage is the second stage — the stage in 

 which the insect is a worm. 



The pupal stage is the third stage— that metamor- 

 phosis passed through in a dirt or membranous sac ■, 

 the cocoon. 



The adult is the fourth stage— the mature state. 



Some insect parasites do not pass through the oval 

 stage. 



Those parasites belonging to the class insecta, 

 anatomically speaking may be divided into three 

 parts, viz.: The head, the thorax and the abdomen. 



The head is provided with two eyes, two antenna.-^ 

 (feelers) and the mouth parts. 



