▁r hin op hor es ▁and ▁along ▁the ▁mid line ▁of ▁the ▁back . ▁The ▁later al ▁pap illa e , ▁g ills ▁and ▁r hin op hor es ▁are ▁mostly ▁transl uc ent ▁pale ▁brown , ▁with ▁some ▁brown ▁mark ings . ▁ ▁E col ogy ▁T rap ania ▁br un nea ▁fe eds ▁on ▁Ent opro ct a ▁which ▁often ▁grow ▁on ▁sp ong es ▁and ▁other ▁living ▁substr ata . ▁ ▁References ▁▁▁ ▁Burn ▁R . ▁( 2 0 0 6 ) ▁A ▁check list ▁and ▁bibli ography ▁of ▁the ▁O pis th ob ranch ia ▁( M oll us ca : ▁Gast rop oda ) ▁of ▁Victoria ▁and ▁the ▁Bass ▁Stra it ▁area , ▁south - e astern ▁Australia . ▁Museum ▁Victoria ▁Science ▁Re ports ▁ 1 0 : 1 – 4 2 ▁ ▁Category : G on iod or id idae ▁Category : G ast rop ods ▁described ▁in ▁ 1 9 8 7 <0x0A> </s> ▁The ▁Lord ▁Derby ' s ▁par ake et ▁( P s itt ac ula ▁der b iana ), ▁also ▁known ▁as ▁Derby an ▁par ake et , ▁is ▁a ▁par rot ▁species , ▁which ▁is ▁conf ined ▁to ▁small ▁pocket ▁of ▁mo ist ▁ever green ▁forest ▁in ▁the ▁hills ▁and ▁mountains ▁of ▁the ▁Indian ▁states ▁of ▁Ar un ach al ▁Pr adesh ▁and ▁Ass am , ▁and ▁ad jo ining ▁parts ▁of ▁Tib et , ▁S ich uan ▁and ▁Y unn an ▁in ▁China . ▁The ▁species ▁suff ers ▁from ▁cutting ▁of