1922] Hylander, — The Desmids of Connecticut 219 



*C. setaceum Ehrenb. Bethlehem, Middlebury, Orange, Wash- 

 ington. 



C. strigosum Breb. Middletown (Conn, see 2, p. 60). 



*C. striolatum Ehrenb. Madison, Middlebury, Morris* New 

 Haven (a). 



C. subcostatum Nordst. in Wittr. & Nordst. Alg. Exs. 870. 

 Middletown (Conn, see 2, p. 61). 



*C. toxon West. Southington. 



*C. tumidum Johnson. Hamden (a), Monroe (b), Southington. 



C. turgidum Ehrenb. Middletown (Conn, see 2, p. 60). 

 *C. ulna Focke. Orange, Thomaston. 



*C. Venus Kiitz. Hamden (a, b), Killing-worth, Litchfield (a), 

 Middlebury, Morris, North Branford (a), Orange, Thomaston, 

 Suffield, Washington. 



DOCIDIUM Breb. 



*D. undulatum Bailey Middlebury. 



D. Baculum (Breb.) DeBary. Middlebury, Middletown (Conn, 

 see 2, p. 61). 



PLEUROTAENIUM Nag. 



*P. coronatum (Breb.) Rabenh. Middlebury, Morris. 



P. coronatum var. fluctuatum West. Bethlehem, Middletown 

 (Conn, see 2, p. 61, as P. crenulatum), Orange. 



P. nodosum (Bailey) Lund. Middlebury, Middletown (Conn, see 

 2, p. 61). 



*P. truncatum (Breb.) Nag. Bethlehem, Middlebury. 



P. trabecula (Ehrenb.) Nag. Bethlehem, Middlebury, Middle- 

 town (Conn, see 2, p. 61), New Haven (a), Newtown, North Branford 

 (6), Killingworth, Suffield, West Haven (Evans), Washington. 

 TRIPLOCERAS Bailey 



fT. gracile Bailey. Washington. 



fT. verticillatum Bailey. Middletown (Conn, see 2, p. 61, as 

 Docidhim.) 



TETMEMORUS Ralfs 



*T. Brebissonii (Menegh.) Ralfs. Bethany, Hamden (Carter & 

 Evans,) Killingworth, Newtown, West Haven (a). 

 *T. laevis (Kiitz.) Ralfs. Bethany. 



EUASTRUM Ehrenb. 



*E. affine Ralfs. Southington. 



