SIXTH ANNUAL RECEPTION. 87 



6. a. Born Wax-Plate Model of the Cranium and Jaws 



OF THE LARVAL Chiivleroid, Hydi'olagus colliei. 

 b. Segmentation Stages of the Hag-Fish, Bdellostoma 

 stoutia. Exhibited by Bashford Dean. 



7. Preparations Illustrating Recent Neurological Meth- 



ods. Exhibited by O. S. Strong. 



8. Preparations Illustrating the Development of Sper- 



matozoa IN THE Crustacea. 

 Exhibited by M. Bunting. 



9. Preparations Illustrating the Evolution of the Kary- 



OKiNETic Figure. Exhibited by G. N. Calkins. 



10. Preparations Illustrating the Maturation and Ferti- 



lization of an Ascidian. 

 Exhibited by H. E. Crampton, Jr. 



11. Preparations Illustrating Certain Stages in the Ma- 



turation AND Fertilization of a Snail, LimncBa 

 elodcs. Exhibited by H. R. Linville. 



12. Preparations Illustrating 'Formation and Division of 



AN Abnormal Tetrad in the Spermatogenesis of 

 Various Hemiptera. Exhibited by F. C. Paulmier. 



13. a. Preparations Showing a Method of Histological 



AND CyTOLOGICAL TeCHNIK. 



b. Demonstration of the Breathing Apparatus of 

 Fishes. 

 Exhibited by Ulric Dahlgren, of Princeton University. 



