202 



PROTOZOA. 



No. 1165. Coeloptychium agaricoides, Goidf. 



Two specimens. These mushroom-like 

 Sponges have the upper surface marked by 

 pores in transverse lines, and the lower one 

 rayed. From the Chalk, Haldem, Westphalia, 

 and now in the Ward Museum of the Univer- 

 sity of Rochester. Price, $1.25 



No. 1166. Placoscyphia meandroides^ Leymerie. 



This genus of irregular Sponges is characterized by thin plates in complica- 

 ted windings, and pores disposed in lines through the little irregular furrows. 

 From the Upper Greensand, Kent, England, and now in the private Geological 

 Cabinet of Mr. Ward, Rochester. Price, $0.70. 



No. 1167 Placoscyphia rneandroides, Leym. 



From the same locality and Cabinet. 



No. 1168. Polypothecia dichotoma, Benett. 



Price, $0:60: 



This genus is allied to Scyphia. The species pre- 

 sents considerable diversity of shape This beautiful speci- 

 men shows several branches springing from one root. 

 Upon breaking these stems transversely, sections of par- 

 allel longitudinal tubes are exhibited as in Sip7ionia. 

 From the Upper Greensand, Warminster, England, and 

 now in the private Geological Cabinet of Mr. Ward, Ro- 

 chester. Size, 7x4. Price, $1.00. 



No. 1169. Retispongia (Scyphia) Hceninghausii, Goldf. 



This cup-shaped Sponge is provided on the outside with little branches which 

 form irregular meshes. It is related to Coeloptychium. From the Chalk of Nor- 

 thern Germany, and now in the Ward Museum of the University of Rochester. 



Price, $0.30. 



No. 1170. Scyphia clathrata, Goldf, 



(Syn. Cribrospongia clathrata, D'Orb.) The Sponges of this genus are of a 

 tubular or cylindrical form, and terminate in a rounded pit ; they are either sim- 

 ple or branched, and composed of a firm reticulated tissue. This specimen is 

 from the Middle Oolite limestone at Bayreuth, Bavaria. Price, $0.60. 



No. 1171. Scyphia empleura, Munst. 



(Syn. G-oniospongia empleura, D'Orb.) In this species, the filaments of the 

 tissue cross one another at right angles. From the Middle Oolite, Heiburg, Wir- 

 temberg, and now in the private Geological Cabinet of Mr. Ward, Rochester. 



Price, $0.60. 



No. 1172. Scyphia polyommata (?) Goldf. 



This species is closely allied to 8. clathrata. From the Middle Oolite, Streit- 

 berg, Wirtemberg, and now in the Ward Museum of the University of Roches- 

 ter. Size, 9x8. Price, $1.50. 



