ON THE FOSSIL PHYLLOPODA OF THE PALHOZOIC ROCKS. 345 
Ceratiocaris papilio, Salter, at Dunside (Logan Water), Eaglinside Burn, Logan 
Water (2 m. 8. of Lesmahago), and Linburn. 
Ceratiocaris stygia, Salter, at Kip Burn (Logan Water), Eaglinside Burn, and 
7 Linburn. 
Ceratiocaris, caudal appendages, at Long Burn (Logan Water), Dunside (Logan 
Water), Logan Water (6 m. 8.W. of Lesmahago), Lann Burn, and Douglas 
Water. 
Abdominal segments and appendages probably belonging to O. stygia 
Oxford Museum, E, seven segments and two spines, imperfect. The 
former ornamented with angles and oblique lines, the latter with a longi- 
tudinal lineation. Leintwardine. 
B. M. ‘58878,’ Linburn, Muirkirk. A telson, not quite perfect at 
base, 35 mm. long, associated with some obliquely-striate segments. 
B. M. ‘41899,’ Lesmahago. Four segments, 27 mm., and M. P. G. 
X¥5¢, four segments, 30 mm., and in each case two short ensiform stylets 
attached (style wanting). 
B. M. ‘41900’ and ‘41901, Lesmahago. Three abdominal seg- 
ments, obliquely striate, and an ultimate segment with both oblique and 
straight strisz, probably due to two layers of the test. Telson, 30 mm. 
Tong ; and two ensiform stylets, each about 13 mm. long. 
M. P. G. x sa, 3156, sd, Logan Water, Lesmahago. Segments with 
Oblique striz (one ultimate segment has straight strie), not well pre- 
served. Probably C. stygia, as named in the ‘ Catal.’ 1878, p. 142. 
One of the specimens in the Brit. Mus. marked ‘59648,’ from Lesma- 
hago, is a small acute-ovate carapace (25 x 15 mm.), to which is attached 
a complete, but somewhat crushed body of 13-14 segments, 6-7 (15 mm.) 
of which are external, and have appended two caudal spines, of which 
the strongest may be the telson (12 mm. long), and the other, nearly as 
long, one of the stylets. 
At first sight this looks like the small 0. Murchisoni, Ludl. Mus. A., 
but it differs considerably in details. If it be nota distinct species, it 
may be the young of C. stygia. 
On another of the specimens, B.M. ‘59648,’ from Lesmahago, are 
e loose small bodies, without carapaces. The largest has 13 or 14 
Segments, 45 mm., some of which are obliquely striate. Five measure 25 
tmm., and the last one 10 mm., equal to three of the others. The telson 
is 20 mm. long. Another such specimen, smaller and narrower, 35 mm. 
dong, has 14 (?) segments; the last one 7 mm. long; appendages im- 
ect. 
___ These may be the loosened and shifted abdomens of young individuals 
of O. stygia or CO. papilio, both common at Lesmahago. They cannot be 
Mistaken for the Carboniferous Acanthocaris, Peach, or the Devonian 
Campecaris, Page. 
t 
5. CERATIOCARIS mvoRNATA, M‘Coy. 
‘1851. Ceratiocaris inornatus (Salter MS.), M‘Coy. ‘Brit, Pal. Foss.’ p. 187, pl. 1 E., fig. 4. 
(1854. as A Morris. ‘Catal. Brit. Foss.’ 2nd edit. p. 102. 
1859. =) 7 Salter. In ‘Siluria,’ 2nd (3rd) edit. p. 532. 
1860. ” ” ” ‘Ann. Mag. Nat. Hist.’ ser. 3, vol. v. p. 156. 
1867. 0» : » In ‘Siluria,’ 3rd (4th) edit. p. 516. 
1873. ” % 3 ‘Catal. Camb. Sil. Foss.’ pp. 177, 178. 
1877. ” Py H. Woodward. ‘Catal. Brit. Foss. Crust.’ p. 71. 
This is the third of M‘Coy’s original species. The specimen in the 
