DESCRIPTION OF SPECIES. 117 



In'oad at the middle; tlie lateral nerves join the median nerve at an acute 

 angle of 20° to 2o''. 



The identification of the two leaves figured here with Heer's species is 

 conclusive, although none of the figures given by Heer are complete, all 

 representing leaves broken at the middle. The nervation, form, and size 

 of the leaves as given by Heer (loc. cit., PL xxxviii, Fig. 5), is exactly 

 similar to that of our leaves. Heer descinbes the leaves as linear, but their 

 facies could not be judged from the fragments which he had for examina- 

 tion. 



This is the finest and best preserved specimen of ^1. Pfaffiana Heer which 

 I have seen as yet. It has all the characters of the species as described. 



Habitat: Ten miles northeast of Delphos, Kansas. Nos. 4201 and 4202 

 of the collection of Mr. R. D. Lacoe. 



Andromeda Snowii, sp. nov. 

 PI. XVII, Fig. 16. 



Leaves small, coriaceous, entire, regularly lanceolate, broader at the 

 middle, tapering upward at the acute apex and in the same degree down- 

 ward to the base; primary nerve stout; .secondaries parallel, equidistant, 

 oljlique, 45° of diverg-ence, camptodrome. 



The leaf, which is 4.5"" long and 1.5"™ broad at the middle, is allied in 

 form to A. proioiiaia Ung., a species commonly repi-esented in the Miocene 

 of Europe; but it is still more intimately related to A affiiiis Lesq.,^ a species 

 also known by a single leaf, which differs by its punctulate areolation, and 

 the narrower, longer, acuminate form. In A. Siioivii the secondaries, though 

 thicker from the middle of the base, as in A. affiiiis, ascend higher, curve in 

 more distinct bows, forming by anastomosis a double series of festooning 

 areoles. The apex of the leaf is not acuminate, but rather blunt-pointed, 

 and the lower pair of secondaries are close to the borders and follow them 

 at a more acute angle of divergence than that of the others above it. 



Habitat: Ellsworth County, Kansas. No. 495 of the museum of the 

 University of Kansas. Collected by E. P. West. 



Andromeda cretacea, sp. gov. 

 PI. XVII, Figs. 17, IS; PI. XXIV, Fig. 5. 



Leaf small, membranous, narrowly lanceolate, acuminate, tapering to 

 the base, entire; median nerve stx'aight; secondaries, nearly equidistant 



'Cret. aud Tert. Fl., p. 60, PI. ii, Fig. 5. 



