570 GEOFFREY SMITH. 
Occurrence.—In the Carboniferous of Saarbriick, Rhenish 
Prussia, and of Lebach, Bohemia. 
Genus 2. Paleocaris (Meek and Worthen 2 and 8). 
The flagella of the first antennae were unequal in size. 
The first thoracic limb was apparently not raptorial. The 
endopodites of the thoracic limbs were stout and short, 
exopodites elongated. The pleura of the abdominal segments 
projected backwards to end in a definite acute angle. 
The telson was shorter than the sixth abdominal segment. 
The abdominal appendages were slender, not flabellate. 
P. typus (Meek and Worthen 2 and 8). (Text-figs. 56 
and 57.) 
The chief interest of this fossil is, perhaps, to be found in 
TEXT-FIG. 56. 
TV i Ra AY Soe ae 
CHIR 
| \ eA ener, nee 
Paleocaris typus. Reconstruction after Packard. Lateral view. 
the fact that Packard definitely demonstrates the presence of 
exopodites on the thoracic limbs. The eyes are unknown, 
but since in so many respects this fossil is close to Gamp- 
sonyx there can be little doubt that they were pedunculated. 
The thoracic limbs, if we can trust Packard’s restoration, were 
all similar and biramous. 
The telson was broad and short and apparently clothed 
with a uniform border of sete. The uropods projected 
beyond the end of the telson and were also apparently 
clothed with uniform sete. 
In certain respects Meek and Worthen’s figure (text-fig. 
57) in dorsal view of P. typus is more interesting than 
