phy ▁and ▁spe ci ation : ▁ge ographical ▁fragment ation ▁in ▁the ▁deep - water ▁g ast rop od ▁genus ▁Bath yt oma ▁( G ast rop oda , ▁Con o idea ) ▁in ▁the ▁western ▁Pacific . ▁System at ics ▁and ▁B iod iversity ▁ 8 ( 3 ): ▁ 3 7 1 - 3 9 4 ▁ ▁External ▁links ▁ ▁Gast rop ods . com : ▁Bath yt oma ▁net r ion ▁ ▁net r ion ▁Category : G ast rop ods ▁described ▁in ▁ 2 0 1 0 <0x0A> </s> ▁The ▁Near ▁South ▁Side ▁is ▁a ▁community ▁area ▁of ▁Chicago , ▁Illinois , ▁United ▁States , ▁just ▁south ▁of ▁the ▁dow nt own ▁central ▁business ▁district , ▁the ▁Loop . ▁The ▁Near ▁South ▁Side ' s ▁boundaries ▁( see ▁map ) ▁are ▁as ▁follows : ▁North — Ro ose vel t ▁Road ▁( 1 2 0 0 ▁S ); ▁South — 2 6 th ▁Street ; ▁West — Ch icago ▁River ▁between ▁Ro ose vel t ▁and ▁ 1 8 th ▁Street , ▁Clark ▁Street ▁between ▁ 1 8 th ▁Street ▁and ▁C erm ak ▁Road , ▁Federal ▁between ▁C erm ak ▁Road ▁and ▁the ▁Stevens on ▁Express way ▁just ▁south ▁of ▁ 2 5 th ▁Street , ▁and ▁Clark ▁Street ▁again ▁between ▁the ▁Stevens on ▁and ▁ 2 6 th ▁Street ; ▁and ▁East — L ake ▁Michigan . ▁ ▁Al ong ▁Lake ▁Sh ore ▁Drive , ▁the ▁Near ▁South ▁Side ▁includes ▁some ▁of ▁Chicago ' s ▁best -