47 



By Exchanfje. 



Amekicax Antiqi'arias Society, Worcester. Proceertings of, Oct. 21, 1871. 

 No. 57. 8vo panijih. 



Kew Jeusey Historical Society. Proceedingrs of, Yol. II. No. 4. 1871. 



New Yoijiv Lyceum of NATinjAr. History. Annuls of. Vol. X., Nos. 4-.">. 



PuULisiiEUS. American Naturalist, (.'liristiau 'VVorlcl. Gardiier'.s Montlily. 

 Gloucester Telejn"iph. Haverhill Gazette. Ipswich Clironicle. Essex County 

 Mercury. Lawrence American. Little Giant. Lynn Reporter. Lynn Ti-anscript. 

 Medical and Surgical Reporter. Nation. Nature. Peabody Press. Sailors' Mag- 

 azine and Seamen's Friend. Salem Observer. Shoe and Leather Journal. Sothe- 

 ran's Catalogue. Western Lancet. 



ESSEX COUNTY SPIDERS. 



J. II. Emerton exhibited his collection of spiders from 



the neighborhood of Salem and gave a general account 



of the classification of spiders, illustrated by sketches of 



some of our common species. The collection contained 



some eight hundred specimens, representing one hundred 



and sixty species of the following suborders : — 



Orbitelarise (round web spiders) 29 species. 

 Retitelarise (net spiders) 33 " 



Tiibitelarise (tube spiders) 43 " 



Citig-radae (wolf spiders) 19 " 



SaltigradiB (jumping spiders) 20 " 

 Laterigradte (crab spiders) 16 " 



The Orbitelarins were represented by the large black 

 and yellow Epeira rqoaria Hentz, one of our most con- 

 spicuous spiders which can hardly escape the notice of 

 any one who goes into the country in August, by Epeira 

 vuhjarls, the brown and gray spider, Avhich spins round 

 webs everywhere about our yards and barns, Epeira tri- 

 folhim, one of our largest Epeiras, with round purple 

 abdomen marked with white spots, and the less familiar 

 species with thorny and odd shaped abdomens, Epeira' 

 siellaia and spiinea. 



Among the Retitelaria) were Theridion vulgare Hentz, 

 perhaps the most common of all onr house spiders whose 

 webs occupy the corners of our rooms at all. seasons, and 



