510 G. H. PERKINS — TERTIARY LIGNITE OF BRANDON, VERMONT 



Genus Bicarpellites, Perkins, Vermont Report, 1903-1904, page 190. 

 Bicarpellites knowltoni, Perkins, Vermont Report, 1903-1904, page 191. 



Plate 86, figure 13. 



This is a fine and well marked species, opening by two valves above, 

 thicker and more rounded below ; general form broadly ovate ; length 

 27 millimeters, width 20 millimeters. 



Figure 29 shows a cross-section of Bicarpellites. 



Bicarpellites rugosus, Perkins, Vermont;Report, 1903-1904, page 191. 



Plate 86, figure 14. 



Form regular elongate-oval, thinner than most of the larger fruits, valve 

 opening only a little more than a fourth of the length, ends rounded. 

 The surface is quite rough and bears irregular longitudinal ridges; 

 length 30 millimeters, width 15 millimeters. 



Genus Glossocarpellites, Gen. Nov. 



In the Fourth Vermont Report the species shown on plate 86 as figure 15 

 and on plate 87 as figures 16 and 17, as well as several other species, were 

 with much hesitation referred to the old genus Carpolithes, to which they 

 had been assigned by Lesquereux. As was noticed in the account given 

 in the report, this genus is so vaguely defined and has been made to in- 

 clude so diverse forms that it is practically of no value. I have therefore 

 created a new genus, to include the very distinctly marked forms shown 

 in the figures above mentioned. It may be characterized as follows : 



Genus Glossocarpellites, fruit a carpel, usually of considerable size 

 (25 millimeters or more long), one-celled, walls rather thick, opening on 

 one side by a mucronate, tongue-shaped valve ; surface in most species 

 more or less corrugated or furrowed, upper end pointed, lower narrower 

 and rounded. Name suggested by the tongue-like form of the valve. 



Professor Knowlton and others have compared these fruits with that 

 of Jeffersonia diphylla, but, after careful comparison with quite a number 

 of the fruits of this species, I fail to see much similarity, and certainly 

 not identity of genus. In appearance they resemble the carpels of some 

 species of Banksia, but the opening is somewhat different, and I am 

 quite unable to place the3e fossils in any of the recent genera. 



Glossocarpellites parvus, Perkins. 



Qarpolithes parvus, Vermont Report, 1903-1904, page 179. 



Plate 86, figure 15. 



This is much smaller than the other species of this genus. In form it 

 is long ovate, rather thick, so that it is more nearly cylindrical than 



