MONOGRAPTUS. 



381 



Var. minor (McCoy). Plate XXXVII, figs. 13 a--c. 



1855. GrajHuJIfcs ludensis, var. minor, McCoy, Brit. Pal. Foss., p. 5. 



1900. Monoijnqdas tumescens, var. minor, Wood, Quart. Jouru. Greol. Sjc, vol. Ivi, p. 459, pi. xxv, 



filiS. 6 A, B. 



Fig. 250. — ilIo»o;/)"a]i<«s tumescens, var 

 minor (McCoy). 



A foi'iii originally descrilxxl by McCoy a.s a variety of Moiiog. liideiisii^ seems 

 to be more ])robably a variety of M. tumexceux as here defined. This foi'ni agrees 



with M. fiiiiiescciis in the character of the })roximal 

 extremity, and the general shape of the theciv, Avhile 

 it differs from it in its small size, which never 

 exceeds 1 o mm. in length ; in fact the general form 

 of the polypary has always a somewhat stunted 

 appearance. 



Horizon and Localities — Lower Ludlow Shales 

 (zone of 71/. tamescen.'i). 



MoidijODieri/sJtire : Llettygynfach (south side 

 Long Mountain) ; Llangyny w Rectory, Montgomery- 

 shire. Lndloiv District : Elton Lane ; Elton-Ludlow 

 Road, etc. 



Associates, etc. — Var. miiior apj)ears to occur on the same horizon as the more 

 typical form and as a rule to be associated with it. 

 Collections. — Lap worth and Wood. 



Complete sj)Ocimon. Enlarj^einont of 

 PI. XXXVII, fig. 13 b. 



Monograptus comis, Wood, l^late XXXVII, fig. 9. 



1900. Monograptus comis, Wood, Quart. Jourii. Greol. Soc, vol. Ivi, p. 459, jd. xxv, fi^s. 8 a, b, and 

 fig. 12, p. 460. 



Fig. 2.51. — Monograptus comis, Wool. 



Proximal end, showing siciila. Eiilarge- 

 iiieut of part of PI. XXXVII, fig. 9. 



Polypary small, not exceeding 2"5 om. in length, 

 straight distally, l)ut with distinct ventral 

 curvature in the proximal portion, Avidening 

 gradually throughout till the maximum dia- 

 meter of about 1'3 mm. is attained. Tliecse 

 eleven in 10 mm., the adult ones with an 

 average length of 2 mm., from three to four 

 times as long as wide, and overlapping about 

 one-half their length; average inclination 

 25°-30°. 

 Description. — The polypary is small, and some- 

 what slender in appearance, Avith distinct ventral 

 curvature in the proximal portion. 



