SUPER-ORDER V MALACOSTRACA 655 
Surface without nodes or carimae. Antennae (?) obscure ; supposed gastric teeth large, 
cuspidate. Rostrum lanceolate. Body segments fourteen or more, four to seven ex- 
tending beyond the carapace, some of them with obscure branchial appendages (uropods). 
Telson long, spinose on 
the edges; two lateral 
appendages or cercopods. 
Abundant in Ordovician 
and Silurian ; Europe and 
North America. 
Cardiolites, Nich, 
Supposed tracks of Cera- 
trocaris (?). Silurian; 
Scotland. 
Caryocaris, Salter. 





- Fic. 1372. 
Carapace smooth, narrow, Rta chee ‘ 
5 ae lere heels V Lf Ceratiocaris papilio, Salter. Ordovician; Lanark- 
sub-acute 1m front, thick. #/f shire. a, Antennae(?); m, Mandible; 7, Rostrum. 
Abdomen unknown; //¥ 1/; (after Woodward). 
caudal plate with three 
spines. Cambrian; Wales. 
Physocaris, Salter. Carapace bladder-shaped, pointed in front, bivalved (?), smooth. 
Abdomen smooth ; telson longer than the cercopods. Silurian. 
Lingulocaris, Salter ; Saccocaris, Salter. Very imperfect remains of Crustacean 
bodies. Lingula Flags; Wales. 
Acanthocaris, Peach. Carapace small, with a blunt snout in front; surface 
smooth. Body segments numerous, seven exposed beyond the carapace. Telson long ; 
cercopods short or rudimentary. Lower Carboniferous ; Scotland. 
NXiphidiocaris, Jones and Woodw. (emend.). Known only by its long curved blade- 
like telson. Silurian (Ludlow); England. (X. enszs, Salter.) 
Cryptozoe, Packard. Carapace smooth, broadly rounded in front; imperfectly 
known. Coal Measures; Illinois. (C. problematicus, Packard.) Probably congeneric 
with the Carboniferous species, Ceratiocaris Oretonensis, and C. truncata, Woodw., in 
which traces of four cephalic appendages have been found. 
Colpocaris, Meek. Carapace smooth, with deep anterior marginal sinus and sharp 
extremity. Caudal plate with three spines. Lower Carboniferous ; Kentucky. 
Strigocaris, Vogdes (Solenocaris, Meek). Carapace narrow and elongate, with 
longitudinally striated surface; very imperfectly known. Lower Carboniferous ; 
Kentucky. 
Nothozoe, Barrande, may belong in this association. Ordovician ; Bohemia. 
Phasganocaris, Novak. Known only from the abdomen and telson. Last segment 
long, cylindrical, with strong articulation. Telson articulated to the cercopods by deep 
sockets ; edges spinose. Surface scaly. Lower Devonian ; Bohemia. 
Macrocaris, Miller, - Carapace valves very narrow in front, broad behind, strongly 
lineate. Body segments numerous, Lower Carboniferous ; Kentucky. 
Family 2. Echinocaridae. Clarke. 
Carapace elongate or oval, with nodes (muscular or segmental) in the cephalic region, 
one of which in each valve may be ocular but bears no optic pit; one or more lateral 
carinae usually present. A free rostrum has been observed in some genera. 
Echinocaris, Whitf. (Figs. 1869, 1373). Hinge short, carapace sub-oval, broad in 
front, not incurved behind, no postero-lateral spinules ; a single sigmoid carina on each 
valve, sometimes a small accessory ridge near the hinge. Surface punctate and pustu- 
lose, no longitudinal striations. Of the body segments, six are exposed and bear small 
