STAURASTRTTM. 137 



St. fusiforme, Wolle. Plate XLIY. figs. 20, 21. 



Semicells in front view, narrow fusiform, lateral angles 

 drawn out into long, colorless arms, margins erenate-dentate, 

 apices bifurcate; back or end broadly rounded or straight, 

 crenate : end view fusiform. 



Diameter 125-138 //.: length 38 //.. 



This specie:- appears t<> be related to the preceding two, but 

 varies from both in form of cell ; from St. leptocladum, in the 

 longer, stouter, and straighter arms, and from St. grcUlatorium, 

 in the absence of the produced back and the aculei. 

 Denmark Pond, Nw Jersey. 



St. [otanum, Wolle. Plate LI. figs. 5-7. 



Very minute ; semicells quadranglar, angles drav n out into 

 thin, diverging, granular ray-, each aboul as long as the 

 diameter of the body ; apices obtuse ; end view triradiate. 



Diameter including (be rays 1520 u. 



The rays are ao minute, they appear like a single series oi 

 fine granules. 



Found thi- \<r\ -mull variety quite numerous at Ocean 

 Beach and at Malaga, N. .J. 



St. a \ k y i:<h m -. Wolle. Plate LI. fig. I and variety fig. 3. 



About as long as wide, granularly rough: semicell cylin- 

 drical with enlargement toward- the convex end ; sides pro- 

 duced laterally into narrow, elongate, slightly tapering, in- 

 curved arms, margins granulate-crenate, apices bifurcate; end 

 view quadrangular, four-rayed. 

 I Hameter 82 ".: length 75 u. 



The only water which hitherto furnished this new species 

 i- a pond near Malaga, N. Jersey. 



Yar. HEXACER1 >l. Wolle. Plate LI. fig. 3. 



Somewhat stouter than the typical form and furnished with 

 six arms. 



Ponds, northern Counties of New Jersey. 



In the possession of six arms it bears some resemblance to 



St. coronulatwn, but with nearly twice the length-, and in the 



absence of the circle of large granules on the convex end. 



which suggested the name, it appears more nearly related to 



. St. ankyr aides. 



