TABLE OF CONTENTS. V 



Page. 



Ridgway, Robert. A review of the genus Xiphocolaptes of Lesson 1-20 



[Xiphocolaptes sclateri, X. virgatus, X. ignotus, X. cinnamomeus, new species; and X. 

 major castaneus, new subspecies. 1 



A review of the genus Sclerurus of Swainson 21-31 



[Sclerurus lawrencei, new species.] 



(Scientific results of explorations by steamer Albatross.) No. I. — Birds collected on the 



Galapagos Islands in 1888 (text figures) 101-128 



[Nesomimxis maedonaldi, 2V. personatus, new genus and species ; Ccrthidea cinerascens, 

 Geospiza media, Oactornis brcvirostris, C. hypoleuca, Camarhynchus townsendi, 0. pau- 

 per, PoL'tilonetta galapagensis, new species.] 



(Scientific results of explorations by steamer Albatross.) No. II. — Birds collected on 



the Island of Santa Lucia, West Indies ; the Abrolhos Islands, Brazil ; and at the Straits of 

 Magellan, in 1887-'88 129-139 



[Geositta longipennis, TTpucerthia propinqua, new species.] 

 Smith, John 15. Contributions toward a monograph of the Noctuidse of Temperate North 



America— Revision of some Tamiocampid genera (with Plates XXII-XXLTI) 455-496 



Stejnegcr, Lconhard. Description of two new species of snakes from California 95-99 



[Lichanura orcutti, L. simplex, new species.] 



Notes on a third collection of birds made in Kauai, Hawaiian Islands, by Valdemar 



Knudsen 377-386 



[Oreomyza wilsoni, new sptcies.] 



Description of a new lizard from Lower California 643,644 



[Cnemidophorus labialis, new species.] 



Stejueger, Leonhard, and Lucas, F. A. Contributions to the natural history of the 

 Commander Islands. X. — Contribution to the history of Pallas's Cormorant (with Plates 



II-IV) 83-94 



Vasey, Dr. George. (Scientific results of explorations by steamer Albatross.) No. VI.— 



List of the plants collected iu Alaska in 1888 217, 218 



Walcott, Charles D. Descriptive notes of new genera and species from the Lower Cam- 

 brian or Olenellus Zone of North America 33-46 



[Archceocyathus (A.) dwighti, Ethmophylhim meeki, Plaaolites annularius, new species ; 

 Kutorgina labradorica var. swantonensis, new variety ; Obolella atlantica, Camerella 

 minor, new species; Coleoloides typicalis, new genus and species ; Hyolithes terranovi- 

 cws, H. similis, new species; Helenia bella, new genus and species; Agnostus desidera- 

 tus, Microdiscus helena, new species ; Avalonia manuelensis, new genus and species ; 

 Zacanthoides eatoni, Solenopleura harveyi, 8. howleyi, new species.] 



Description of a new genus and species of inarticulate brachiopod from the Trenton 



limestone 365, 3G6 



[Conotrcta rusti, new genus and species.] 

 Wilson, Thomas. The Palaeolithic period in the District of Columbia (with plates XVII- 



XXI) .* 371-376 



