1922] Hylander, — The Desmids of Connecticut 221 



*M. crenata Breb. New Haven (a), Newtown. 



M. crux-melitensis (Ehrenb.) Hass. Litchfield (b), Middletown 

 (Conn, see 2, p. 63), Washington. 



*M. denticulata Breb. Bethlehem, New Haven (a), Washington. 



*M. laticeps Nordst. Vidensk. Medd. Foren. Kjobenhavn 14:290. 

 pi. 2, f. 14. 1870. Bethlehem, Middlebury, Suffield, Washington, 

 West Haven (a). 



M. muricata (Bailey) Ralfs. Middlebury, Middletown (Conn, see 

 2, p. 63). 



*M. PAPILLIFERA Breb. Bethlehem, Middlebury. 



**M. papillifera var. glabra Nordst. Bethlehem, Madison. 



M. radiata Hass. Bethlehem, Middlebury, Middletown (Conn, 

 see 2, p. 63, as M. furcata), Morris, Washington. 



M. rotata (Grew) Ralfs. Bethany, Litchfield (b), Madison, 

 Middletown (Conn, see 2, p. 63), Suffield, West Haven (a). 



M. sol (Ehrenb.) Ki'itz. Hamden (b), Middlebury, Middletown 

 (Conn, see 2, p. 63), Orange, Plymouth, Suffield, Washington, West 

 Haven (b). 



*fM. speciosa Wolle, Desm. U. S. 1 19. pi. 45, f. 1, 2. 1884. Beth- 

 lehem. 



M. truncata (Corda) Breb. Hamden (Evans), Killingworth, 

 Middletown (Conn, see 2, p. 63), New Haven (a). 



COSMARIUM Corda 



*C. amoenum Breb. Bethany, Middlebury, Newtown. 



*C. BiocuLATTJM Breb. Bethlehem, Middlebury, Morris, Orange, 

 Plymouth, Suffield. 



*C. biretum Breb. Guilford, Madison, Monroe (a). 



C. Boeckii Wittr. Bridgeport (Johnson, 5, p. 287). 



C. Botrytis Menegh. Hamden (b), Middletown (Conn, see 2, 

 p. 64), North Branford (a), Washington, West Haven (a). 



C. Broomei Thwaites. Middletown (Conn, see 2, p. 64), Suffield, 

 West Haven (a). 



*C. caelatum Ralfs. West Haven (a), Woodbridge. 



*C. ciRCULARE Reinsch. Middlebury. 



*C. conspersum Ralfs. Morris, West Haven (b). 



C. contractum Kirch. Killingworth, Middletown (Conn, see 2, 

 p. 64). 



**C. Corbula Breb. Suffield. 



C. crenatum Ralfs. Middletown (Conn, see 2, p. 64). 



