28 CATALOGUE OF 



Range. 



596. C. perforator ( ?), Billings ? 



597. C. pleurexanthemus, Green 3 — 7 



Family PARADOXID^E. 



Genus Triarthrus, Green. 



598. T. becki, Green 0—1 



Family CALYMENIDJ1. 



Genus Calymene, Brongniart. 



599. C. callicephala (senaria), Green — 7^ 



600. C. christyi, Hall 6—7 



Family PRCETIDyE. 



Genus Prcetus, Steininger. 



601. P. parviusculas, Hall near 4 



602. P. (?) spurlocki, Meek 1—2 



Family PHACOPID^E. 



Genus Dalmanites, Ernmerick. 



603. D. achates, Billings near 2 



604. D. breviceps, Hall near 6 



605. D. callicephalus, Hall 2—4 



606. D. carleyi, Meek 3—5 



Family LICHASID^E. 



Genus Lichas, Dalman. 



607. L. trentonensis ( ?), Conrad near 4 



608. L. harrisi, S. A. Miller 4—7 



Family TRINUCLEIDA 



Genus Trinucleus, Lhwyd. 



609. T. bellulus, Ulrich 0— \% 



610. T. concentricus, Eaton 0—2 



