400 ALLAN HAXCOCK PACIFIC EXPEDITIONS \OL. 24 



PLATE 26 



F\^. 1. Prtrnlist/u's lonsorius, n. sp., male parat>pe. Isla Bartoloiiie, 



Galapagos Islands. 

 Fig. 2. Pctrolistlics ratlihunar Schinitt, female. Isla Guadalupe, Baja 



California. 

 Fig. 3. Petrolistlics cabrilloi Glassell, male. Dana Point, California. 

 Fig. 4. Pctrolisthi's trionirnis Stimpson, male. Cape Arago State 



Park, Oregon. 



