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Genus Coras

Amaurobiid_male_back - Coras - male Coras sp.? (Amaurobiidae) - Coras - male spider - Coras lamellosus - male Spider - Coras Coras lamellosus - male spider - Coras - male Coras sp. medicinalis or lamellosus? - Coras - female Coras? - Coras
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Agelenidae (Funnel Weavers)
Subfamily Coelotinae
Genus Coras
Synonyms and other taxonomic changes
Although these spiders have been placed in a cribellate family, they do not have a cribellum. See discussion here on page 25 (23). Coelotes, Coras, and Wadotes are ecribellate amaurobiids (from link).
Explanation of Names
From Vergil's Aeneid, one of the Argive twins.(1)
14 species in the USA and Canada.
Howell and Jenkins state that "C medicinalis builds an extensive, broad, platform-like web that is equipped with a tubular or funnel retreat. Their webs are often constructed beneath overhanging rock ledges where the platform of the web sags somewhat."
Coras aerialis — USA; MD, MA, NH, NY(2)
Coras alabama — USA; AL, LA(2)
Coras angularis — USA; MD(2)
Coras cavernorum — USA; NC (this species may be synonymous with C. montanus but the name will remain valid until a study of the type can be made)(2)
Coras crescentis — USA
Coras furcatus — USA; FL(2)
Coras juvenilis — USA; CT, IN, MD, MI, NY, PA, VT, VA(2)
Coras kisatchie — USA; LA(2)
Coras lamellosus — USA; AK, CA, DC, IL, IN, KS, LA, MN, MS, NE, OR, PA(2)
Coras medicinalis — USA & Canada; AL, CO, CT, DC, FL, GA, IL, MA, MD, MI, MN, MS, NC, NJ, NY, NC, OR, TN, VA(2)
Coras montanus — USA & Canada; CT, ME, MN, NH, NY, NF, NS, ON, QC(2)
Coras parallelis — USA; CT, DE, MD, NJ(2)
Coras perplexus — USA
Coras taugynus — USA; AL, NC, TN(2)
Coras tennesseensis — USA; NC, TN(2)
This genus was moved from Amaurobiidae in 2011.

Page origination: Eric suggested the possibility of these being in the genus Coras. Images are very similar to those in Howell and Jenkins. We've gathered the images here to hold them until ID can be worked out.
See Also
Tegenaria - info
how to know the spiders gives these few distinctions: Coras has robust chelicerae and the anterior median eyes usually larger than the anterior laterals. Tegenaria does not have robust chelicerae, anterior median eyes not larger than the laterals(usually smaller), posterior median eyes are very little smaller than the posterior laterals, and the posterior eye row is slightly procurved.
Internet References
~ - Key to species.
Works Cited
1.Spiders of North America: An Identification Manual
D. Ubick, P. Paquin, P.E. Cushing and V. Roth (eds). 2005. American Arachnological Society.
2.North American Agelenidae of the genus Coras Simon
Muma, M. H. 1946. American Museum Novitates 1329: 1-20.