a transmission cover member sealingly engaging at least a portion of {HEAD ~ the lateral wall} of {TAIL ~ said case main body} to cover the recessed portion thereof in a fluid tight manner; and 
of
a transmission cover member sealingly engaging at least a portion of { HEAD ~ the lateral wall } of { TAIL ~ said case main body } to cover the recessed portion thereof in a fluid tight manner ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH