233 



canal is sub-central. There appears to be excentric rings of 

 growth almost wholly confined to the side furthest from axis 

 of alimentary canal, which can with difficulty be traced. The 

 joint carrying auxiliary arms has the same character as No. 

 2, but there are either four or five " auxiliary arms," and in 

 one specimen there is a solitary auxiliary placed lower upon 

 an ordinary joint. Greatest diameter, 8 millimetres ; least, 

 7 millimetres; distance of annular sutures apart, 2 

 millimetres. 



No. 4 is, no doubt, the extreme portions of auxiliary arms 

 probably of either No. 2 or 3, composed of fine, simple, 

 rounded moniliform joints, about 1| millimetres in diameter, 

 gradually tapering. 



Tribrachyocrinus Tasmanicus ? Nov. sp. 



Perforation of large pentagonal tripartite pelvis or 

 dorsocentral plate exceedingly minute, apparently absent ; 

 costal plates large, roundly pentagonal ; one plate (first costal) 

 irregularly hexagonal ; margins of plates marked with fine 

 parallel concentric stria). Specimen much distorted, having 

 a broadly oval form. Length, 3 inches ; width, 2 inches. 



Associated with Spirifera convoluta, Sanguinolites Mhe- 

 ridgei, etc., in Upper Paleozoic mudstone cliffs at Shot 

 Tower, Brown's Eiver-road. 



Specimen obtained by Mr. A. Morton, Curator of Tasma- 

 nian Museum, from the collector, Mr. Harrison. The above 

 species comes very close to, and perhaps may not be specifically 

 distinct from, the smaller form with large perforation in 

 tripartite pelvis described by Prof. M'Coy as T. ClarJcei, 

 from the soft grey shales of Darlington, N.S.W. 



NOTES ON POSSIL CEABS PBOM THE DEEP 

 DBEDGINGS OP THE YAERA EIVEE, AND 

 EXCAVATION OP THE COODE CANAL, VICTOEIA. 



By S. H. Wintle, P.L.S., &c. 



The accompanying fossil Crustacea I obtained from the 

 deposits of deep dredgings of the Tarra river, and from the 

 material deposited from the excavation of the Coode CaDal. 

 The age of the old Estuarine bed which supplied them is 

 Post Pliocene. These cancerolites belong to the Genera 



