IV TABLE OF CONTENTS. 



Page. 



Clark, Austin Hobart. On a collection of unstalked Cri- 

 noids made by the United States steamer Albatross in the 

 vicinity of the Philippine Islands. — No. 1798. February 

 15, 1911«--. 529-563 



New genera: Selenemetra, Epimetra, Toxometra. 



New species: Comissiadumetum, CJiispida, Comasterfruticosus, C(?) 

 horridus, C.(?) scitulus, Zygometra pristina, Catoptometra ophiura, 

 Selenemetra viridis, Epimetra nympha, Calometraalecto, Asterometra 

 magnipeda, A. cristata, Cosmiomctra philippinensis, Crotalometra 

 propinqua, C. infelix, Thalassometra hirsnta, Stenometra aistata, 

 Pachylometra septentrionalis, P. luna, P. selene, Chlorometra rohusta, 

 Iridometra melpomene, Toxometra paupera, Psathyrometra parva. 



New variety: Oligometra gracilicirra, var. ornata. 



. On the inorganic constituents of the skeletons of 



two recent Crinoids. — No. 1795. January 11, 191P 487-488 



Thalassocrinus, a new genus of stalked Crinoids 



from the East Indies.— No. 1793. January 11, 1911« .. 473-476 



New genus: Thalassocrinus. 



New species: Thalassocrinus ponti/er. 



CocKERELL, T. D. A. Bees in the collection of the United 



States National Museum. 1. — No. 1806. March 3, 



1911^ 635-658 



New species: Sphecodes japonicus, Osmiamitsukurii, 0. matsuvnurse, 

 Bomhus sapporoensis, Habropoda pekinensis, Nomada hakonensis, 

 N. ( Melanomada) heleniella, N. ( Micronomada) mitchelli, N. victrix. 



New subspecies: Nomada ruficornis koebelei, N. wheeleri engel- 

 mannise, N. (Holonomada) affabilis dallasensis, N. (Xanthidium) 

 luteola bishoppi, N. (Gnathias) bella callura. 



New varieties: Ceratina (Ceratinidia) hieroglyphica, var. japonica, 

 Nomada belfragei, var. xanthogaster, N. maculifrons, var. 

 comparata. 



Crawford, J. C. Descriptions of new Hymenoptera. 1. — 



No. 1804. FebiTiary 25, 1911 «.. 617-623 



New genera: Dipachy stigma, Winnemana. 



New species: Nomia howardi, N. moctezumse, Trichomalus apante- 

 loctenus, Dipachystigma cushmani, Winnemana argei, Euplectrus 

 fukaii, E. koebelei, E. kuwanx, Elachertus hyphantrix, Cratotechus 

 hoplitis. 



. New South American parasitic Hymenoptera. — 



No. 1786. December 28, 1910 « 235-239 



New genera: Perissocen trust, Calorileya, Mayrellus. 

 New species: Perissocenfrus chilensis, P. argentinx, Calorileya cearse, 

 Mayrellus mirabilis. 



Evermann, Barton Warren, and Homer Barker Lati- 

 mer. The Fishes of the Lake of the Woods and connect- 

 ing waters.— No. 1778. October 25, 1910 « 121-136 



o- Date of publication. 



