482 MESOZOIC FLOKAS OF UNITED STATES. 



than those figured in Monograph XV, and one of these is figured in PI. 

 CIX, Fig. 1, to ilkistrate more fully tlie character of the plant. It i.s 

 probable that an excavation in this clay and a more thorough coUectioii 

 would give more good specimens of this plant, which as yet is known only 

 by portions of its leaves. 



KISSII. IM.AMS KKOM IHK HANK NKAI! IllilKIKK. 



The locality designated "Bank near Brooke" (see Monograph XV, 

 p. 21) represents strata of the Ac|uia Creek horizon or Brooke ))eds of the 

 Lower Potomac, that have been fully described. 



The following collections have been made from this locality since the 

 appearance of Monograph XV : 



1. A small collection by Lester F. Ward on June 20, 1891. 



2. ^Vnother small collection by Lester F. AVard and David Wliite on May 4, 1892. 

 .3. Two slabs of considerable size containing numerous impressions of leaves 



and some well-preserved Unio shells were found so labeled without indication of 

 collector or date. There is a memorandum in the register suggesting tliat thcv 

 may have been collected by Fontaine, Knowlton, and Ward on the occasion of their 

 visit to this place June 12-14, 18S6. 



4. A collection made for the Maryland State Geological Sun^ey, not tlated, l)ut 

 bearing the numbers 8304-8313 of that survey. 



r,. Three specimens collected for the same survey, bearing its number S:->14 and 

 the words: "Acjuia Creek Bridge, Va., Loc. from L. F. Ward," which appear to be 

 from the same locality, the rock material being the same and the same species 

 occuring in it. 



From all these sources the following species, with the number of 

 specimens of each, are foimd : 



Baieropsis foliosa Font - - 1 specimen. 



Baieropsis jiluripartita Foul - - fi specimens. 



Lept()slrol)us foliosus Font - - . 1 specimen. 



Leptostrobus longifolius Font ..4 specimens. 



Menispermites vh-giniensis Foul - - 3 specimens. 



Sapindo])sis brevifolia Font 2 s])ecimens. 



Sapindopsis magnifolia Font. 1 specimen. 



Sapindopsis variabilis Font 2 sitecimens. 



As all of these species were previously known from this locality, and 

 none of the specimens add anything to our knowledge of them, no special 

 description of them seems necessary. 



