ORNITHOSAURIA, DINOSAURLA. Rept. 17 
Echis carinata , Schn., recorded from Togoland, W. Africa ; Matschie, 
Zool. Jahrb., Syst. v, p. 617. 
Trimeresurus purpureomaculatus , Gray, var. carinatus , Gray : note on a 
specimen from Sumatra ; Boulenger, P. Z. S. 1890, p. 36. 
ORNIT HO S ATJBI A. 
Rhamphorhynclius jcssoni , n. sp., Lydekker, Q. J. Geol. Soc. xlvi, p. 429, 
figs., Oxford Clay of Huntingdonshire. 
DINOSAURIA. 
O. C. Marsh, Am. J. Sci. (3) xxxix, p. 424, arranges the American 
Cretaceous Dinosaurs in the following orders and families : — 
Ord. Theropoda. 
Fam. 1. Dryptosaurklce. 
Ord. Ornitiiopoda. 
Fam. 2. Trachoclontida ?. Fam. 3. Claosauridce. Fam. 4. Ornithominiidai. 
Ord. Ceratopsia. 
Fam. 5. Ceratopsidce. Fam. 6. Nodosauridce. 
Criticisms by Baur, Am. Nat. xxiv, p. 569. 
O. C. Marsh indicates additional special characters of his Ceratopsidce ; 
Am. J. Sci. (3) xxxix, pp. 83 & 418, pis. v-vii, and Geol. Mag. (3) vii, 
pp. 1-5, pi. i: and, Am. J. Sci. (3) xxxix, p. 415, fig. 1, writes on the 
distinctive characters of his order Hallopoda. 
Iyuanodon , Mant. : R. Lydekker, Q. J. Geol. Soc. xlvi, pp. 36-45, figs., 
describes various remains from the Wealden of England. 
Camptosaurus dispar , Marsh : note on the ilium ; S. W. Williston, 
Am. Nat. xxiv, p. 472. 
Hadrosaurus breviceps, Marsh : note on the teeth ; Marsh, Am. J. Sci. 
(3) xxxix, p. 423, fig. Cope, Am. Nat. xxiii, p. 905, suggests tho possi- 
bility of its identity with Diclonias pentagonus , Cope, 
v Claosaurus, n. g., for Hadrosaurus agilis ) Marsh ; Marsh, Am. J. Sci. 
(3) xxxix, p. 423, fig. 
Hadrosaurus paucidens, Marsh, belongs probably to Ceratops ; id. t. c. 
p. 83. 
jTrachodon longiceps , n. sp., id. t. c. p. 422, Laramie formation, Wyoming. 
v Pteropelyx , n. g., for P. gracilipes , n. sp., displaying characters between 
the Hadrosauridce and Agathaumidce ; Cope, Am. Nat. xxiii, p. 904 
[issued March, 1890], Cow I., Montana. 
v Ornithomimus , n. g., type of a new family, Ornithomimidce , of Ornitiio- 
poda. 0. velox , n. sp., Marsh, Am. J. Sci. (3) xxxix, p. 84, pi. i, Ceratops 
beds of Colorado. 
Megalosaurus dunkeri, Dames: on a metatarsus from the Wadhurst 
Clay, near Hastings ; Lydekker, Q. J. Geol. Soc. xlvi, p. 45, fig. 
n/ Barosaurus , n. g., for caudal vertebras resembling those of Diplodocus, 
1890. [VOL. XXVII.] 
D 2 
