500 CALIFORNIA ACADEMY OF SCIENCES. 1 28 



Family OPISTOGNATHID^. 



213. Opistognathus punctata Peters, 



The original type of this species was described by Dr. 

 Peters from Mazatlan. It was also found by Dr. Gilbert 

 at Panama, the two specimens mentioned being as yet the 

 only ones known. 



Family BLENNIID.F;. 



214. Isesthes brevipinnis (Giinther). 



This species was found to be rather common in rock 

 pools at Mazatlan both by Dr. Gilbert and by us. 



215. Rupiscartes atlanticus (Cuvier & Valenciennes.) 

 This species is very common in rock pools about Ma- 

 zatlan, where it reaches a length of about six inches. It 

 was found in numbers by Dr. Gilbert at Mazatlan, but 

 has not been recorded from localities farther south. Mr. 

 Charles H. Townsend found it at San Cristobal Bay, and 

 Mr. John Xantus at Cape San Lucas. Thus far no dif- 

 ference has been found between these specimens and 

 those from the West Indies. 



Body liver brown, paler below. Fins mostly blackish ; 

 an orange area on upper edge of caudal; a yellow one 

 tinged reddish below. Eye red posteriorly. 



216. Rupiscartes chiostictus (Jordan & Gilbert). 

 Only the original types of this species found by Dr. 



Gilbert in the tide pools at Mazatlan have been recorded. 

 It was not seen by us. 



Family CLINID^. 



217. Labrosomus xanti Gill. 



Very common at Mazatlan in rock pools with Rupis- 

 cartes atlanticus (Cuvier & Valenciennes), and reaching 



