Hapl. 



272 



from the many fossil specimens of them found in Europe and 

 America. They flitted in myriads between the reeds and 

 fern-palms, over quiet marsh waters full of fish and reptiles. 

 Many of them have been found in Pennsylvania coal measures. 

 See Mylacris, etc.— XZ/7-XF: 



Haplophlebium longipinnis. Scudder. An insect found 

 by Mr. Lacoe under the Pottsville conglomerate, in gap above 

 Pittston, Luzerne Co. Pa. (GT, 286). — XI. — See Appendix. 



Harlania halli. (Goeppert, Foss. Flora des Ueberg, 1852). 



IV. 



L,C. 



Synonyms : Arthrophycus harlani^ Conrad ; Fucoides alle- 

 y^lieniensis ; Fucoides irongniarti oi Hall. Collett's Indiana 

 Rt. 1883, page 29, plate 2, fig. 3. — Some of the Medina sandstone 

 beds are a net- work of fronds of this sea weed, which some 

 have chosen to regard as tracks of worms. There is reason to 

 think the plant stems were tubes. (Hall.) IV h. 



Harttia matthewi. Walcott, Bulletin U. S. G. S. No. 10, 



page 19, plate 1, fig. 3, interior of shell, 

 '^' '" enlarged to twelve diameters ; a unique 

 little shell found associated with frag- 

 ments of Parodoxides and Ptycoparia 

 trilobites, in New Brunswick {Saint 

 John) formation. Middle Cambrian^ M. 

 I C. — The character of the apex is unknown, 

 as the only representative of both genus 

 and species is in the form of this interior 

 cast, and around its margin the cast of the 

 apparently smooth outer surface. ( W.) 



