438 Dr. H. Woodward — Crustaceans and M//riopods 



the 'Bullion Mine' (or 'Mountain Four Feet'), on the liill near 

 Colne, Lancashire, and he permits me to figure and describe them. 



All the specimens are enclosed in small, elliptical nodules of clay- 

 ironstone, evidently formed around the organisms by a process of 

 concretionary action at the time of their embedment in the sediment 

 forming the layer in which the nodules occur, the fossils being, as 

 usual in such cases, exposed by splitting the concretions open along 

 their periphery. 



CRUSTACEA. 



DECAPODA— Macroura . 



1. Anthrapal^mon serbatus, H. Woodw., sp. nov. 

 (Text-fig. 1.) 



This specimen is represented by only a portion of one side of 

 a nodule ; the remainder and counterpart are alike wanting. 



The Crustacean is disposed longitudinally on the split surface of the 

 matrix, and is 90 millimetres in length, of which the cephalothorax 

 measures 50 mm. long, and the five abdominal segments 40 mm. ; 

 the rostrum, which is smooth, sharply pointed, ridged, and 

 slightly curved downwards in front, is 20 mm. in length, the 

 anterior border on the left side is 11 mm. broad ; the antennules 

 and antennse are only imperfectly preserved ; the outer antenna was 

 furnished with a broad, recurved spatulate scale 14 mm. in length. 

 The outer latero-anterior margin bears four short serrations, but the 

 rostrum appears to have been quite smooth. Only four of the five 

 pairs of ambulatory legs are imperfectly preserved, but the 

 presumably larger anterior chelate pair, if present, are not visible in 

 the fossil. 



The latero-posterior border of the carapace is slightly rounded off, 

 and the margins raised and thickened. The median line of the five 

 abdominal segments is slightly raised, and the lateral margins 

 truncated. If epimeral pieces existed to these segments they 

 are hidden in matrix or are not now preserved. The caudal 

 segment and appendages are wanting. The surface of the body- 

 segments is finely punctate; the surface of the cephalothoracic shield 

 has doubtless adhered to the other, lost side of the split nodule. 

 A very small maxilliped with a three-jointed palpus attached appears 

 lying on the surface of the cephalothorax where the carapace has 

 been removed (unfortunately this is not shown in Fig. 1). 



This specimen approaches most nearly to Dr. B. N. Peach's 

 Antlirapaliemon Etheridgei ^ from the Carboniferous rocks of Eskdale, 

 but in the latter the rostrum bears a row of four or five well-marked 

 small spines, and the extremity is also serrated on each side, the 

 antennal scales are more oval in form, not so obliquely curved and 

 spatulate as in our specimen, nor is the border of the cephalothorax 

 serrated along the latero-anterior margin as in this example from 

 Colne. I am therefore inclined to separate this form specifically^ 

 giving it the trivial name of serrattis. 



1 Trans. E. S. Ediub., 1880, vol. xxx, pp. 76-78, pi. viii, figs. Sa-ff. 



