Reviews — Ulricas Micropalceontology. 133 



the progress of the work are briefly noticed ; and one of the foot- 

 notes is a protest against the making of such " uncouth " and 

 " barbarous " names as Wardichthys and Leedsichthys. By some 

 strange oversight, however, the most " barbarous " of all such 

 names, Gondwanosaurus of Lydekker, is omitted from this category. 

 The index of genera occupies about fifty pages, and almost every 

 palaeontological form of importance seems to be included. 



II. — Contributions to the Micro-Paleontology of the Cambro- 

 Silurian Eooks of Canada. Pt. II. pp. 27-57, with Two 

 Lithographed Plates and Two Woodcuts. By E. 0. Ulrich. 

 (Geological and Natural History Survey of Canada. Montreal : 

 W. F. Brown & Co., 1889.) 



THIS is in continuation of Mr. A. H. Foord's previously published 

 Report, 1 and the pagination and numbering of the plates of the 

 two parts have therefore been made consecutive. The present 

 Report (No. 4 of the series) is entitled " On some Polyzoa (Bryozoa) 

 and Ostracoda from the Cambi'o-Silurian Rocks of Manitoba," and 

 the author states in a brief introduction that his material consisted 

 of a small collection of specimens made at various times between 

 the years 1875-84, both inclusive, by different members of the 

 Canadian Survey, but mostly by Mr. T. C. Weston. 



The species of Polyzoa described include twenty from Stony 

 Mountain, 2 five from St. Andrew's, 3 and one from Big Island, Lake 

 Winnipeg. All the Stony Mountain species belong to the Hudson 

 River Group, while of the St. Andrew's species two, Monticulipora 

 Wetherbyi, Ulrich, and Pachydictya acuta, Hall, occur in the 

 Birdseye and Black River Formation, and the other three (enumerated 

 below) in the Trenton. 



The following are the names of the Stony Mountain species : — 



Proboscina auloporoides, Nicholson. Slictopora or Rhinidictya, sp. indt. 



Proboscina froudosa, Nicholson. Dicranopora fragilis, Billings. 



Monticulipora parasitica, Ulrich, var. 



Dicranopora emacerata, Nicholson. 

 Goniotrypa bilateralis, n.gen. and sp. 

 Pachydictya hexagonalis, n.sp. 

 Ptilodictya Whiteavesi, n.sp. 

 Arthroclema angulare, Ulrich. 

 Helopora Harrisi, James. 

 Sceptropora /acuta, Ulrich. 

 Nematopora ?, sp. undescribed. 



plana,- n.var. 



Homotrypa, sp. undescribed. 



Batostoma Manitobense, n.sp. 

 * Petigopora scabiosa, n.sp. 



Batostomella gracilis, Nicholson (var.). 

 * Bythopora striata, n.sp. 



Bythopora ? delicatula, Nicholson. 



Monotrypella quadrata, Rominger. 



The St. Andrew's species are : — Monticulipora Wetherbyi, Ulrich, 

 Fistulipora ? laxata, n.sp., ^Pachydictya magnipora, n.sp., Pachy- 

 dictya acuta, Hall, and Phylloporina Trentonensis, Nicholson, sp. 

 The species from Big Island, Lake Winnipeg, is named Diplotrypa 

 Westoni, n.sp. 



1 Contributions to the Micro- Pal reontology of the Cambro- Silurian Rocks of 

 Canada, pp. 1-26, 7 plates and 1 woodcut, Ottawa, 1883. 



2 A hill some fifty feet in height, on the western bank of the Red River, not far 

 from Winnipeg. 



3 A village and parish on the west bank of the Red River, about fifteen miles 

 north-east of Winnipeg. 



