[141] 



CATALOGUE OF THE FISHES OF NORTH AMERICA. 



1671b. TelrodoH tc.sliidhiriis annitlatua^ Jouyue. P. 



1672. Tetrodon spengleri Hloch. W. (13:51) 



1673. Tetrodon nephelus- Goode »& Bean. S. W. (1332 b.) 



1674. Tetrodon turgidus Mitcbill. N. (1332) 



1675. Tetrodon trichocephalus Cope. Ace. (1333). 



583.— PSILONOTUS^ Swaiuson. 



1676. Psilonotus punctatissimus Giinther. P. 



'« 

 Family CLVI.— DIODONTID^. 



584.— TRICHODIODON Bleeker. (482) 



1677. Trichodiodon pilosus Mitcbill. O. (1334) 



585.— DIODON Liimuius. (483) 



1678. Diodon hystrix Liuiii«ns. W. P. (1335) 



1679. Diodon liturosus Shaw. W. P. (1136) 



586.— CHILOMYCTERUS (Bibron) Kaup. (484) 



1680. Chilomycterus geometricus Mitcbill. N. S. (1337) 



1681. Chilomycterus fuliginosus DeKay. N. (1337 ft.) 



1682. Chilomycterus reticulatus Linniens. W. (1337 c.) 



Family CLVII.— OETHAGOKISCID^. (130) 

 587.— MOLA^ Cnvier. (485,486) 

 1683. Mola mola Linn aius. N. S. W. O. C.En.P. (1.338,1339) 



' Tetrodon annulahis Jenyns, Zool. Beagle, 1842, 15.3:= Tetrodon heraldi Giinther, VIII, 

 *283. Gulf of California to Peru. This species is little, if at all, ditferent from T. tes- 

 iudirieus. 



- Tetrodon nephelus is extremely variable in regard to its spinous armature. Specimens 

 from Key West show all gradations from entire smootbness above and below to the 

 -condition described in the text (page 966). Older specimens are generally less prickly 

 than young ones. 



3 Psilonotus Swaiu.sou. 



(4no8mi«8 Peters; Tropidichthiis and Canthogaster Bleeker ; ^Hc/fisomus Richardson.) 



(Swain8on,Nat. Hist. Classn. Anim., II, 1839, 328 ; type Tetrodon rostratus Bloch.) 



This genus difiers externally from Tetrodon in having the nostrils obsolete, and the 

 Taack compressed to a keel. The skeleton differs so widely from that of Tetrodon that 

 Dr. Gill (Proc. U. S. Nat. Mus., 1884,422) has propo.sed to regard it as forming a dis- 

 tinct family, Psilonotidce. Species rather numerous in the tropics. CPiXo?, bare; 

 j'(5roS, back.) 



Psilonotus punctatissimus Giinther. Tetrodon punctatissimus Giinther, VIII, 302= 

 Tetrodon oxyrhynchus Lockington, Proc. Ac. Nat. Sci. Phila., 1881, 116. Gulf of Cali- 

 fornia to Panama. 



^The generic name Mola first appears in Cuvier, Tableau Elementaire, 1798, p. 423, 

 thus having three years priority over Orthagoriscus (1801). 



The recent researches of Mr. John A. Ryder render it very probable that the small 

 fishes known as Molacantlius are, after all, young forms of ilfoZa. I therefore omit 

 Molacanth'ns nummularis. 



Ranzania truncata (No. 1139 ft) should not be included in the present list, as it has 

 mot been taken nearer our coast than the Bermuda Islands. 



