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