512 CAMBRIAN BRACHIOPODA. 



iella (Walcott), of Newfoundland, Lingulella davisi (McCoy), of Wales, L. mosia osceola 

 (Walcott), and Obolus (Westonia) stoneanus (Whitfield), of Wisconsin. No such forms are 

 known to me from the Lower Cambrian, and the broad shells from the Middle Cambrian are 

 usually more acuminate. 



The specific name is deiived from Kiura, the type locality. 



Formation and locality. — Middle Cambrian: (357 [Waagen, 1885, p. 769]) Limestones in the "Neobolus beds" 

 of the Khussak group; above the salt mines at Kiura (Khewra), Salt Kange, India. 



Lingulella l^vis Matthew. 



Plate XIX, figures 4, 4a-b. 



Lingulella Ixvis Matthew, 1892, Trans. Roy. Sec. Canada for 1891, 1st ser., vol. 9, sec. 4, No.- 5, p. 39, PI. XII, figs. 

 4a a,nd 4b. (Described as a new species, see below for copy. The specimens represented by figs. 4a and 

 4b are redi-awn in this monograph, PI. XIX, figs. 4a and 4, respectively.) 



The original description by Matthew follows: 



A large oval-ovate species, with a very thin test, resembling a Lingula in its thin hinge line, and having a 

 pedicle groove. 



The shell has a smooth, shining surface, but when observed with a lens very fine concentric and fainter radiating 

 lines are made visible. 



Ventral valve, length, 15 mm.; width, 11 mm. Dorsal valve, length, 14 mm.; width, 11 mm. Another dorsal 

 valve is 17 mm. long and 15 mm. wide. 



This is a very interesting species on account of the thinness of the shell and the unusual 

 outline of the dorsal ralve. It is unfortunate that the material for study does not show the 

 interior of the valves. 



Formation and locality. — ^Upper Cambrian: (301n) Shales of Division C3a of Matthew [1892, p. 39], on the right 

 shore below the "falls," St. John Harbor, St. John County, New Brunswick. 



Lingulella LjEvis grandis Matthew. 



1/ 



Plate XIX, figure 4c. 



Lingulella Isevis grandis Matthew, 1903, Geol. Survey Canada, Rept. Cambrian Rocks Cape Breton, pp. 200-201, 

 PI. XV, figs. la-d. (Described and discussed as a new variety. The specimen represented by fig. Id is 

 redrawn in this monograph, PI. XIX, fig. 4c.) 



Matthew considers this shell a variety of Lingulella Isevis. It is somewhat larger, but 

 a good series of specimens would probably unite the two forms. Matthew [1903, p. 201] gives 

 a very elaborate description of the interior of the valves. He sent me the type of the dorsal 

 valve, which is illustrated (fig. 4c). I could not discover many of the markings indicated in 

 his illustration, but the latter may be a composite drawing. 



Formation and locality. — Upper Cambrian: (325b [Matthew, 1903, desc. of PI. XV]) Sandy shales of Division 

 CSa of Matthew, at Escasonie shore, East Bay, east of Bras d'Or Lake, in eastern Cape Breton, Nova Scotia. 



(301t [Matthew, 1903, p. 201}) Sandy shales of Division CSa of Matthew, at Carlton shore, near the suspension 

 bridge, St. John, St. John County, New Brunswick. 



Lingulella lens (Matthew). 

 '-'' Plate XXXIII, figures 1, la-d. 



Lingula f lens Matthew, 1901, Bull. Nat. Hist. Soc. New Brunswick, vol. 4, pt. 4, No. 19, pp. 274-275, PI. V, figs. 3a-h, 



(Described and discussed as a new species. The specimen represented by fig. 3a is redrawn in this monograph, 



PI. XXXIII, fig. 1.) 

 Obolus (Lingulella) hellus Walcott (in part), 1901, Proc. U. S. Nat. Mus., vol. 23, pp. 685-687. (Matthew's "Lingula 



lens" is here described with, and refeiTed to, "Obolus (Lingulella) bellus.") 

 Obolus (Lingulella) lens (Matthew), Walcott, 1902, idem, vol. 25, pp. 606-607. (Described and discussed as a distinct 



species.) 

 lAngulella Ixvis lens Matthew, 1903, Geol. Survey Canada, Rept. Cambrian Rocks Cape Breton, pp. 201-203, PI. XV, 



figs. 3a-h. (Matthew's original "Lingula 1 lens " is here described and discussed as a variety of lAngulella Ixvis. 



The description is an essential copy of and the figures are copied from Matthew, 1901, pp. 2747-275, PI. V, figs. 



3a-h.) 

 Lingulella lens Matthew, 1903, idem, pp. 205-206. (Discussed as not belonging under Westonia.) 



