128 PROCEEDINGS OF THE ACADEMY OF [1892. 



and resembles examples of the same species in the grouping of the 

 eyes ; but in all other respects it is so widely divided from the typi- 

 cal Epeira, that it becomes necessary to separate it from the genus ; 

 and, as he knew of no other to which it can be relegated without 

 equal objections, he had deemed it necessary to establish for it this 

 new genus. 

 Drexelia directa Hentz. 



1847 £/>eira directa, Hentz. Jour. B. S., Nat. Sci., V, PI. 31, fig. 21 ; and U. 



S. p. 119, PI. 1-3, fig. 21. 

 1847 Epeira rttbella Hentz Ibid, fig. 22 ; Ibid, p. 120, fig. 22. 



1889 Epeira tetragnathoides Cambridge. Biolog. Cent. Am., Aran. p. 16, PI. 

 viii. figs. 9, 1(». 



1890 Epeira deludens Marx, in Hit, Catalg. p. 544. (Keyserling Die Spinn. 

 Am. IV, Epeir.) 



1890 Singa rubella (Hz.) Mr.rx. Ibid, p. 547. 



February 9. 

 The President, General Isaac J. Wistar, in the chair. 

 Forty-six persons present. 



February 16. 



The President, General Isaac J. Wistar, in the chair. 



Thirty jjersons present. 



Papers under the following titles were presented for publication : — 



A new Pycnogonum from the West Coast of the United States. 

 By J. E. Ives. 



Birds collected by the West Greenland Expedition of 1891. 

 By Witmer Stone. 



Anatomy of West Indian Helices. — Mr. H. A. Pilsbry stated that 

 the genital system in the Helices belonging to the genus Cara- 

 colus is characterized by its simplicity, resembling the North 

 American genus Folygyra in this respect. It differs from this last 

 in several points, notably in the presence of a flagellum upon the 

 penis ; or, to speak more exactly, upon that slender continuation of 

 the penis which gives rise to both the flagellum and the vas deferens. 

 In Caracolus rostratus (PI. VI, figs. C, D) the flagellum (fl.) is very 

 short; the duct of the spermatheca being likewise short. The jaw 

 (PI. VI, fig. E) is stout, its central portion arching forward like a 

 beak, with the suggestion of a median prominence to the cutting 

 edge. It is completely devoid of ribs, although some other forms of 

 Caracolus which are scarcely distinguishable specifically from this 



