324 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 7, 



but all the specimens are apparently stipes of species of Cyclopteris 

 or Sphenopteris. They occur in the Genessee Shale and Marcellus 

 Shale. Many somewhat similar stipes occur at Perry and at Gaspe. 



I^ote. — Since writing the above paper, I have received from Mr. 

 Hartt two additional Ferns, collected by Mr. Lann and Mr. Payne, 

 of St. John. One of them is a pinnule of a Neuropteris, in some 

 points resembling N. gigantea. It is about an inch in length, 

 broadly oval in form, and with a thick and persistent midrib and 

 crowded nervures, forking twice. The other is a Sphenopteris, with 

 elongated pinnatifid pinnae, much in the style of S. intermedia^ 

 Lesquereux. Neither of these plants seems identical with any 

 described species ; but more perfect specimens are required for 

 their description. 



{Incertce sedis.) 



64. Caediocakpum coilnutum, sp. nov. PI. XIII. figs. 23, 24. 



Broadly ovate, emarginate at base, dividing into two inflexed pro- 

 cesses at top. A mesial line proceeds from the sinus between the 

 cusps, downward. Nucleus more obtuse than the envelope, and 

 acuminate at the top. Surf ace of the flattened envelope striate, that 

 of the nucleus more or less rugose. Length about seven lines. 



Numerous in shale near St. John. The specimens are all perfectly 

 flattened, and many of them are also distorted, being elongated or 

 shortened according to the direction in which they lie in the shale. 

 The nucleus constitutes a strongly shaded spot of graphite. The 

 flattened envelope appears as a less distinct wing or border. 



65. Caediocaepum obliqtjum, sp. nov. PI. XIII. fig. 25. 



Unequally cordate, acuminate, smooth, with a strong rib passing down 

 the middle ; length about three lines. 



Pound with the preceding. It somewhat resembles some of the 

 forms of G. acutum, L. «& H. 



66. Teigonocaepum eacemosum, sp. nov. PL XYI. fig. 47 a, b, c. 

 Ovate, obtusely acuminate, in some specimens triangular at apex. In 



flattened specimens the envelope appears as a wing. Attached in 

 an alternate manner to a thicJc, flexuous, furrowed rachis. 



This is evidently a fruit or seed, borne in a racemose manner on 

 a stout rachis. In some specimens the seeds are close to each 

 other, in others more remote. Attached to some are apparently 

 traces of calyx-leaves or bracts. Shales of St. John. 



67. AcANTHOPHYTOi^ spiNOsiTM, gcu. ct sp. uov. PI. XII. fig. 6 a, b. 



Cylindrical branches, ramifying in an alternate manner, striated, and 

 with scattered tubercles, on which are borne short spines or prickles. 



These specimens, from the Hamilton group of New York, resemble 

 fragments of branches of some spiny or prickly exogenous plant. 

 The stipes of some Ferns, as Neuropteris lineata, have a spinous 



