lUli 



CALIKOltMA ACADK.MV Ol' SCIENCES 



illarv lyiiiji ln'liiiul it. Tlu' tooth aro slronj;; and ooiiic, willi ratlior aciito ti|)s; those in 

 tin- man(iil>lo aro in two rows anteriorly which narrow to a single series laterally; those 

 in upper jaw apparently in a single series. 



346. Cerdale ionthas .Ionian .f- Gilbert. 



Platk XXXI, Fu). .IS. 



Kighteon specimens were secured on the Panama reef. The genus Cerdak 

 was dosoriltod as ilifToring from MicroJcsiiui^^ in having two rays in the ventral fin, 

 but this was due to an error in observation. As in Micrudct^^iiia, the ventral liii 

 contains one spine and three rays. The two genera seem to dillor only in the 

 nuioh shorter body and fewer vcrtobno in Ccrilak. The vertebrae are 20+23 in 

 number in addition to the liypiiral oloinoiit. One lurniid spine assists the hypiirnl in 

 supporting the caudal fin. 



The dorsal fin contains 12 slender spines and 150 to '.VI branched articulate 

 rays. The anal contains 27 to 29 branched rays (by error given o(> to 38 rays, 

 instead of 20 to 28, in the original description and subsequently). 



Following are the fin-counts in twelve specimens: 



Dors;il., 

 Anal ... 



44 



28 



44 

 28 



44 

 28 



44 

 28 



44 

 28 



44 

 27 



43 



28 



43 

 28 



43 

 28 



43 



27 



43 42 

 27 29 



The pectoral fin contains fourteen rays. 



The post-temporal is forked, and rather firmly joined to the skull. The supra- 

 clavicle is :i|ii>;iitiitly absent. The actinosts are thin, fiat, and very large, the three 

 up|)ermost joining the hypercoracoid, the lower one joining the hypocoracoid. The 

 opercular bones are all present. 



The front of the mouth is formed by the premaxillaries only. The maxillaries 

 are slender and much curved. The teeth are small and conic in both jaws, uniserial 

 in the premaxillaries, biserial in front of mandible becoming uniserial laterally. No 

 teeth on vomer or palatines. 



The branchiostegal rays are five in number. 



The restricted gill-openings can scarcely suffice to distinguish a family Cerda- 

 lidit from the Blenniidte. 



Family OPHIDIIDiE. 



347. Lepophidiura prorates {Jordan <C- Bollnui.n) . 

 Known only from type and co-types taken in Panama Bay. 



348. Otophidium indefatigabile Jordan S Bollmann. 



Recorded from Albatross Station 2797, Panama Bay, 33 fathoms (Gilbert, 

 1890 6, p. 453). 



