NOVELTY - An isolated polypeptide comprising amino acid sequence exhibiting at least 98% sequence identity to a 419 amino acid sequence (SEQ ID NO: 2) fully defined in the specification from amino acids 22-419 or is a fragment of the sequence of amino acids 22-419 of SEQ ID NO: 2, is new, where the polypeptide has endoglucanase activity.    USE - The polypeptide is useful in composition for degrading a cellulosic material and producing a fermentation product (all claimed).    DETAILED DESCRIPTION - An isolated polypeptide comprising amino acid sequence exhibiting at least 98% sequence identity to a 419 amino acid sequence (SEQ ID NO: 2) fully defined in the specification from amino acids 22-419 or is a fragment of the sequence of amino acids 22-419 of SEQ ID NO: 2, or comprising a catalytic domain and amino acid sequence exhibiting at least 99% sequence identity to a 419 amino acid sequence (SEQ ID NO: 2) fully defined in the specification from amino acids 92-419 of SEQ ID NO: 2 or is a fragment of the sequence of amino acids 92-419 of SEQ ID NO: 2, is new, where the polypeptide or catalytic domain has endoglucanase activity. INDEPENDENT CLAIMS are included for the following:    (1) composition comprising the above-mentioned polypeptide and one or more enzymes chosen from cellulase, glycoside hydrolase family 61 (GH61) polypeptide having cellulolytic enhancing activity, hemicellulase, esterase, expansin, laccase, ligninolytic enzyme, pectinase, peroxidase, protease, and swollenin;    (2) method (M1) for degrading a cellulosic material, involves treating the cellulosic material with the polypeptide, cellobiohydrolase, beta -glucosidase, and GH61 polypeptide having cellulolytic enhancing activity; and    (3) method (M2) for producing a fermentation product, involves (a) saccharifying the cellulosic material with the polypeptide, cellobiohydrolase, beta -glucosidase, and GH61 polypeptide having cellulolytic enhancing activity, and (b) fermenting the saccharified cellulosic material with one or more fermenting microorganisms to produce the fermentation product.