88 TERTIAEY INSECTS OF NORTH AMERICA. 



served. Abdomen dark brown, especially in a very broad median band 

 occupying fully half the width of the dorsal aspect, short ovate, nearly half 

 as broad again as the cephalothorax, and only about one-third as long- again 

 as broad. Legs apparently rather short (they are not well preserved and 

 mostly bent beneath the body), sparsely haired, with slight trace of spinules. 



Length of body, S 2.25'"'", 2 S-TS"" ; of cephalothorax, .^ l"""', 2 1.35°""-; 

 . width of same, <? 0.9°"°, ? L3"" ; length of abdomen, s L25"'", ? 2.4"""; width 

 of same, S 1°"°, ? LS"""; diameter of last palpal joint, ,^ 0.35"""; length of 

 first pair of legs, S 4.65'""', $ 3.25""" (plus tarsi); tibiae, ^ LS""", ? l"^"'; 

 tarsi, (? 1.75°^™ ; of second pair of legs, S 4.2°"", $ 2 G™"" (plus tarsi) ; tibia?, 

 (? LS™", ? 0.8'"'"; tarsi, ^ l.Td"""'; of third pair of legs, i 2°"" ; of fourth i)air 

 of legs, c? 3.25"""'. 



It is possible of course tliat this .? and ? do not belong togetiier, in 

 which case the male as the most perfectly preserved should be considered 

 the type of the species. It is smaller than any other of the species referred 

 here to Epeira, excepting perhaps the one to which no name is given, and 

 it differs from all in the globular or nearly globular form of the cephalo- 

 thorax as well as in other characteristics, as will appear on comparing the 

 descriptions. The species is named for i\Ir. J. H. Emerton, whose papers 

 on North American Arachnida? have been of much assistance to the writer. 



Florissant. One ,^, one 2, Nos. 8777, 5117. 



A single specimen, apparently a female, which is also provisionally 

 referred to this species, is considerably smaller than the other female and has 

 more densely hairy legs (almost the only parts preserved), the lengths of 

 which are as follows: fir.st pair, .'15'""'; second pair, 3.25°'°' ; third pair, 

 1.7"'°' ; fourth pair, 3.25™"'. 



Florissant. One 2 , No. 10998. 



Epeira sp. 

 PI. 11, Fig. 1. 



A single specimen, figured in PI. 11, Fig. 1, is the only representative 

 of a species apparently of Epeira, certainly distinct from the others, but too 

 poorly preserved to indicate more. The outlines of the body are almost 

 altogether obliterated, and it can only be said that it is one of the smallest 

 species, being larger only than the smallest specimen referred to E. emer- 

 toni, but clearly distinct from that in the much greater stoutness of the 

 femora, which are indeed unusually robust, and tlie length of the third ])air 



