xni ARACHNIDA 199 



Classification of the Arachnida mentioned in Chapter XIII. 



ORDER I. ARANEAE (The True Spiders). 



(1) Epeiridae. The Orb-weavers. 



Epeira diademata, the Common Cross Spider. 



(2) Theridiidae. The Line-weavers. 



Theridion pattens. 



(3) Agelenidae. The Cobweb-weavers. 



Tegenaria domestica, the Common House Spider. 

 Agelena labyrinthica, the Grass Sheet-web Weaver. 

 Argyroneta aquatica, the Common Water Spider. 



(4) Lycosidae. The Running Spiders or Wolf Spiders. 



Lycosa picta. The Common Spider-wolf. 

 Lycosa pirata. The Raft Spider. 



(5) Salticidae ( = Attidae). The Jumping Spiders. 



Salticus scenicus. 



(6) Aviculariidae. The Trap-door Spiders. 



(7) .Drassidae. The Drassid Spiders. 



Drassus lapidosus, the Stone Drassid. 



(8) Erigoninae. The Money-spinners. 



(9) Thomasidae. The Crab Spiders. 



Misumena vatia, the Flower Crab. 



ORDER II. PHALANGIDEA (The Harvestmen). 



Phalangium opilio, the Common Haivestmaii. 



ORDER III. ACARINA (The Mites). 



(1) Eriophyidae (Phytoptidae). The Gall-mites. 



(With elongated transversely striated abdomen and only 



two pairs of legs.) 



Eriophyes tiliae, the Nail Gall on lime. 

 Eriophyes macrorhynchus, the Pimple Gall on sycamore 



and maple. 



Eriophyes taxi, the Bud Gall on yew. 

 Eriophyes coryli, the Bud Gall on hazel. 



(2) Sarcoptidae. 



(Eyeless globular mites with no tracheae.) 

 Tyroglyphus, the Common Cheese Mite. 

 Sarcoptes, the Itch Mite which burrows in the skin of 

 mammals. 



