GEOLOGY AND PALEONTOLOGY OF THE CANAL ZONE. 127 



Station 58821. — Costa Rica. Banana River; eighth fossiliferous- 

 zone below the uppermost one of the section. Probably equivalent 

 to Gatun formation. Miocene series. Collector, D. F. MacDonald; 

 1911. Gallinectes decllvis Rathbun. 



Station 5882h. — Costa Rica. Banana River; seventh fossiliferous 

 zone below the uppermost one of the section. Probably equivalent to 

 Gatun formation. Miocene series. Collector, D. F. MacDonald; 

 1911. Leucosilia bananensis Rathbun. 



Station 5882g. — Costa Rica. Banana River; sixth fossiliferous 

 zone below the uppermost one of the section. Probably equivalent to 

 Gatun formation. Miocene series. Collector, D. F. MacDonald; 

 1911. Leucosilia. baiumensis Rathbun. 



Statio7i 5882 f. — Costa Rica. Banana River; fifth fossiliferous 

 zone below the uppermost one of the section. Probably equivalent to 

 Gatun formation. Miocene series. Collector, D. F. MacDonald; 

 1911. Leucosilia bananensis Rathbun. 



Catalogue No. 324287, U.S.N JI.— Costa Rica. Moin Hill, near 

 Limon. Probably equivalent to Gatun formation. Miocene series. 

 Collector, H. Pittier. Oallianassa moinensis Rathbun. 



Station 588.!f.d. — Costa Rica. Moin Hill; third fossiliferous zone 

 below the uppermost; just above level of the rails in railway cut. 

 Probably equivalent to Gatun formation. Miocene series. Col- 

 lector, D. F. MacDonald; 1911. Callianassa moinensis Rathbun. 



Station 5906a. — Panama Canal Zone. Chagres River, 50 to 75 feet 

 below those of (17c) "5905" in lighter colored limestone according 

 to incomplete evidence. Pliocene series. Collector, D. F. Mac- 

 Donald ; May, 1911. Balanus glyptopoma Pilsbry. 



Station 5903. — Panama Canal Zone. From across Chagres River 

 and probably 220 to 225 feet above level of river, top of hill opposite 

 Alhajuela. Gray tufaceous limestone. Pliocene series. Collector^ 

 D. F. MacDonald; May, 1911. Balanus glyptopoma Pilsbry. 



Station 4269. — Costa Rica. City of Port Limon. Port Limon 

 formation. Pliocene series. Collector, Dr. L. A. Wailes. Pa- 

 chycheles lotus Rathbun. Petrolisthes awitus Rathbun. Galappa 

 costaricana Rathbun. Heteractaea lunata (Milne Edwards and 

 Lucas). Cardisoma guanhumi Latreille. 



Station 5886. — Mexico. From the Sayula District of Chiapas. 

 On the Arroyo Chapapoapam. Pliocene series. Collectors, Dr. 

 C. W. Hayes and others, 1911. Balanus glyptopoma Pilsbry. 



Station 6038. — Panama Canal Zone. From black mud from lower 

 end of Gatun Locks. Pleistocene series. Collector, D. F. MacDon- 

 ald; 1911. Balanus eburneus Gould. 



