28 TERRESTRIAL OARRONIFEROITS ARACHNIDA. 



processes of tliose of tlic second pair a})[)ear to be exceptionally narrow. Seven 

 terga of the opistliosoma are shown. These are very broad as compared with their 

 length ; but this may be due to flattening. At all events I do not propose to 

 attach systematic weight to tlic character and separate this specimen specifically 

 or generically from the others here described on the strength of this difference on 

 the evidence of one specimen. Length of trunk (without tail) about 14- mm.; of 

 seven segments of opistliosoma 0'5 mm.; width of opistliosoma about G mm. 



The following fossils of doubtful generic position have also been referred to 

 the Scorpion es. 



(1) Segment of a tail from the Coal Measures of Carluke, Scotland (H. ^yood- 

 ward, Quart. Journ. Geol. Soc , vol. xxxii, pi. viii, fig. 5). 



(2) Portion of a carapace referred by Peach to Eosr orpins sp. (Trans. Roy. 

 Soc. Edinb., vol. xxx, pp. 404 — 405, pi. xxii, figs. 11 to 11(/, 1883). The upper 

 side of the carapace is swollen laterally, the swollen portions being separated by a 

 median longitudinal groove, and each divided by lateral grooves into three 

 portions. In front of the median groove lies the median ocular tubercle ; lateral 

 eyes are also described. According to Peach this carapace is intermediate between 

 that of the species he described as Eoscorpius tuherculafiis and E. iiijlatiis. 



(3) A carapace described by Peach as belonging to a species named Eoscorpius 

 wflatns (Trans. Roy. Soc. Edinb., vol. xxx, pp. 405 — 406, pi. xxiii, figs. 12 to 12^/, 

 1883). It is described as having the greater portion of its surface puffed up into 

 three pairs of lobules separated by deep sulci, which emanate from a deep median 

 longitudinal sulcus. 



Peach himself suggests the possibility of this species belonging to the 



unclassified genus Gydus. To a certain extent this author's descriptions of E. 



iitflafiis recall the characters of the carapace of some genera of Anthracomarti, 

 such as Eoplirijnus and KreUclwria. 



Order PEDIPALPI, Latreille. 

 SaborJer UROPYGI. 



Oenus GERALINURA, Scudder. 



1884. Geralinura, S. H. Scudder, Proc. Amer. Acad. Arts Sci., vol. xx, p. 19. 

 1890. Geralinura, S. H. Scudder, Mem. Bost. Soc. Nat. Hist., vol. iv, p. 454. 

 1904. Prothelyphonus, A. Fritsch, Palaeoz. Arachii., p. 57. 



Fritsch established the genus Prothelt/phorms upon the species described by Kusta 

 as Thelnphomis bohemicus and later as Geralinura hohennca. The alleged difference 



