396 y\LLAX HAXCOCK PACIFIC EXPEDITION'S VOL. 24 



PLATE 24 



Fig. 1. Petrolisthi's niarungtiiculatus Glassell, male. Bahia de San 



Lucas, Gulf of California. 

 Fig. 2. Petrolistlies tubercitlatus (Guerin), male. Bahia de la Inde- 



pendencia, Peru. 

 Fig. 3. Petrolistlies hirtipes Lockiiigton, male. Puerto San Carlos, 



Gulf of California. 

 Fig. 4. Petrolistlies tuberculosiis (H. Milne Edwards), male. Bahia 



de San Juan, Peru. 



