502 CAMBRIAN BRACHIOPODA. 



The material for study is so limited that it is difficult to make comparisons with other 

 species. In form the ventral valve resembles that of Lingulella lineolata (Walcott) (PL XL VIII), 

 L. tarpa (Walcott) (PL XXIII), and in some respects L. granvillensis Walcott (PL XXII), with 

 which it would be more naturally compared owing to its belonging to the Appalachian fauna. 



The specific name is derived from Frankhn County, Vermont, in which the species occurs. 



Formation and locality. — Uiddle Cambrian: (28a) "St. Albans formation, " in limestone lentil about 1 mile 

 (1.6 km.) east of Parker 's quarry, west of Georgia; (319v) sandy shale, 2 miles (3.2 km.) east of Higbgate Springs; and 

 (87) conglomerate limestone 1 mile {1.6 km.) south-southwest of Highgate Falls; all in Franklin County, Vermont. 



/ Lingulella fuchsi Redlich. 



Plate XXXIX, figures 2, 2a-c, 3. 



Lingulella fuchsi Eedlich, 1899, Mem. Geol. Survey India, Paleontologia Indica, new ser., vol. 1, No. 1, Cambrian 

 Fauna of the Eastern Salt Range, p. 7, PL I, figs. lOa-e. (Described and discussed as a new species. ' Fig. 10c 

 is reproduced in this monograph, PI. XXXIX, fig. 3.) 



Oholus {Lingulella) fuchsi (Redlich), Walcott, 1905, Proc. U. S. Nat. Mus., vol. 28, p. 332. (Discussed somewhat as 

 below.) 



In the collection of fossils received from Doctor Noetling I find, associated with Lingulella 

 wanniecki Eedlich, a small elongate form that appears to be identical ■m.th.L. fuchsi of Redlich. 

 Redhch states [1899, p. 10] that his L. fuchsi occurs in a hard clay above the lower magnesian 

 sandstones which rest on the shales containing L. wanniecki. If my identification of the species 

 is correct, L. wanniecki has a greater vertical range, or there may have been some error in the 

 identification and labeling of the zone from which the original specimens were obtained. The 

 identification of the species in the material before me is based on the form of the ventral valve, as 

 shown by Redlich's figure 10c [1899, PL I] and my figure 2 (PL XXXIX). The dorsal valves 

 represented by Plate XXXIX, figures 2a-c, differ materially from Redlich's illustration; but in 

 the specimen represented by figure 2d the httle pit mentioned by Redhch [1899, p. 7] is shown, 

 also two ridges that leave a concave furrow in the central portion of the cast of the valve. 

 These are the fines of the main vascular sinuses. 



Formation and localitt. — Middle Cambrian: (15r)« Dark argillaceous shale, at Khussak, Salt Range, India. 



Lingulella grandis (Matthew). 



Plate XXXVIII, figures 2, 2a-f. 



Leptobolu^ grandis Matthew, 1894, Trans. Roy. Soc. Canada for 1894, 1st ser., vol. 11, sec. 4, No. 8, pp. 91-92, PL 



XVI, figs. 7a-c. (Described and discussed as a new species. The specimens represented by figs. 7a and 7b are 



redrawn ia this monograph, PL XXXVIII, figs. 2b and 2f, respectively) 

 Lingulella ? cuneata Matthew, 1894, idem, pp. 92-93, PL XVI, figs. 5a-b. (Described and discussed as a new species. 



Matthew's types of Lingulella cuneata are figured in this monograph, PL XXXVIII, figs. 2, 2a, 2c, and 2d, but 



it is impossible to tell which of these Matthew figured, PL XVI, figs. 5a-b.) 

 Lingula cf. billingsiana Whiteaves, Matthew, 1894, idem, p. 93, PL XVI, figs. 6a-b. (Described and discussed.) 

 Lingulella ? billingsana Schuchert (in part) [not (Whiteaves)], 1897, Bull. U. S. Geol. Survey No. 87, p. 256. (Merely 



changes generic reference of Matthew's species Lingula cf . billingsiana cited above.) 

 Not Leptobolus cf. grandis Matthew, 1902, Trans. Roy. Soc. Canada for 1902, 2d ser., vol. 8, sec. 4, No. 3, p. 111. 



(Characterized. This species is given by Matthew as occurring -on Mount Stephen, British Columbia. For the 



species occurring at this locality see pp. 127-128.) 



General form subcuneate, with the ventral valve acuminate and the dorsal valve elongate- 

 ovate; valves more than usually convex for a species of the genus. Surface of shell matked by 

 concentric striae and strong lines of growth, and, where the outer surface is perfect, by almost 

 microscopic, irregular, senii-inosculating, elevated striae, that under a high power give the surface 

 an appearance somewhat similar to that of Lingulella {Lingulepis) roherti (Matthew) and 

 Oholus ( Westonid) ella (Hall and Whitfield) (PL XLVII). In almost every instance this surface 

 adheres to the matrix, leaving the glossj^ inner surface described by Matthew [1894, p. 92]; the 

 inner layers or lamellse are marked by numerous fine radiating striae and concentric growth lines; 



o Specimens from the type locality were given to the United States National Museum and this number was assigned to them. 



