[97] FISHERIES OF THE UNITED STATES. 609 



Cambarus gracilis Bundy. 



4960. Decatur, Illinois. Museum Comparative Zoology. 



Cambarus Sloanii Bundy. 



4965. New Albany, Indiana. Museum Comparative Zoology. (Form 

 I and II.) 



Cambarus spinosus Bundy. 



4881. Cypress Creek, Lauderdale County, Alabama. Herrick. 



Astacus Oambelii. 



4855. Santa Barbara, California. Dr. Webb. 



Astacus nigrescens Stimpson. 



4974. San Francisco, California. Museum Comparative Zoology. 



Astacus Trowbridgii Stimpson. 



208C. Astoria, Columbia River, Oregon. Trowbridge. (Types.) 



Astacus Klamathensis Stimpson. 



3899. Walla Walla, Washington Territory. Captain Bendixe, United 

 States Army. 



Astacus leniusculus Dana. 



2161. Oregon (?) 



COLLECTION OF AMERICAN FRESH WATER SPONGES. 



Prepared by Mr. Edward Potts, of Philadelphia, and presented by hiim 

 to the United States National Museum. 



MICROSCOPIC PREPARATIONS. 



Spongilla paupercula Bowerbank. 



1. Lake Cocbituate, Boston, Massachusetts. Opaque. 



2. Lake Cocbituate, Boston, Massachusetts. Transparent. 



3. Lake Cochituate, Boston, Massachusetts. Spicules. 



Spongilla aspmosa Potts. 



4. Absecum, New Jersey. Opaque. 



5. Absecum, New Jersey. Transparent. 



6. Absecum, New Jersey. Spicules. 



Spongilla lacustris Johnston. 



7. European form, received from H. J. Carter. 



8. (?) Ridley Creek, Media, Pennsylvania. Opaque. 



9. (?) Ridley Creek, Media, Pennsylvania. Transparent. 



10. (?) Ridley Creek, Media, Pennsylvania. Spicules. 



11. Chester County, Pennsylvania. Transparent. 



12. (?) White Haven, Pennsylvania. Transparent. 



13. Var. mutica Potts, Lansdowne, Pennsylvania. Opaque. 



14. Var. mutica Potts, Lansdowne, Pennsylvania. Transparent. 



15. Var. mutica Potts, Lansdowne, Pennsylvania. Spicules. 



16. Var. Dawsoni Bk. 



19. Var. multiforis Carter. 



2444— Bull. 27 39 



