Palaeomaclnis anglicus and PalnM[)lionus caleilonicu^. G73 



middle of scutcllum sliinin;; and impiinctatc ; area of nicta- 

 tliorax triangular, plicate basally, and with a lung niediau 

 j)lica (thus Ci«sentially as in Mciitta altissima) ; anterior 

 l)asitarsi with dense orange-fulvous hair within, the other 

 biisitarsi with the same, but redder on hind ones; third s.nu 

 shaped as in Dulicocfiile and Melitta amerlcana ; apical 

 jilate of abdomen with basal lialf finely densely punctured 

 and with no keel. It is doubtful whether the subgenus 

 Jiruc/ii/ct'/j/ia/apis can be maintained; the insect really is 

 nearer to typical (European) Mclttta than is M. americana. 



LXXV. — The Ilolotypes of the Fossil Scorpions Palreo- 

 inaclius anglicus and Palieoplionus cahdonicus. By F. A. 

 Bather. 



(Published by permission of the Trustees of the British Museum.) 



1. FalcEomachus anglicus (II. Woodward). 



IiIr. 11. I. POCOCK (1911, Pala^ont. See. Monogr. Terrestrial 

 Carbtniterous Araciinida, p. 16) has founded a new genus 

 of scorpions, Palaomachus, for tiie reception of Foscorpias 

 anglicus, 11. "Woodward (1876, Quart. Journ. Geol. iSoc. 

 vol. xxxii. p. 58), no similar species being known. Further, 

 Mr. Pucock has selected as the holotype of this species the 

 chela fiom the C-oal-Measures of Skegby New Collier}^, near 

 Mansfield, Notts, which was the original of Dr. Woodward's 

 jdateviii. figs. 3, 3 a {op. ci(.), and is preserved in the Geolo- 

 gical Department of the British Museum (regd. I. 991 a). 

 In relabelling and remounting this specimen for exhibition 

 1 had the curiosity to compare it with the figures of those 

 two authors, but the matiix with which so much of the fossil 

 was still obscured, both in the relief and in the counterpart, 

 prevented me from recognizing the structures represented by 

 them. On clearing away the matrix — a delicate and lengthy 

 but not in other respects a difficult task — the whole outline 

 of the chela was brought to view, and proved very different 

 from that hitherto imagined. 



The proximal segment preserved — the trochanter, with a 

 width of 4"6 mm. and a length of 3*2 mm. — is much more like 

 the same segment in Scorpio afer, as figured by Dr. H. 

 Woodward {tab. cit. fig. 4), than it is like that authol^s 

 representation of it (fig. 3). Its posterior or outer portion 

 is marked by a deep wide groove (appearing as a ridge in the 

 fossil). 



