Jordan and Evi:niiann. — Fishes of North America. 93 



Uaia biroslris, Walbaum, Artoai Pisciuiu, 535, 1792, after Dinbolm imiriuiis Wilhighby, otc. 



l{<ii<i manalia, Bloch & Schneider, Syst. Iclith., 364, ISOl, Tropical America ; after Uaie ma- 



nalie, Lac6pt'de. 

 Utrjadiabolitsmiiriims, Bloch & Schneider, I. c, 368, 1801, India; after Willughby. 

 liaiajimbriata, LAcfipfioE, Hist. Nat. Poiss., iv, 677, 1803, Gulf Stream, 58° N. 

 i 't'phahplera vaiiipyriis, MlTciiiLi,, Ami. Lye. Nat. Hist. N. Y., 1823, 23, Delaware Bay. 

 Ciialiiyiera vampyrus, Dum£eil, Elasmoliranches, i, CGO, 1870. 

 Cetaluptcra rauipi/ru/i, Gunther, Cat., viii, 498,1870. 

 Cephahplerns gionia, LeSvevr, Jour. Ac. Nat. Sci. I'liila., iv, 1S'J4, 115, Georgia; (not I{aja 



giorna, Lacepede). 

 Cephnloplera inanhi, or Mania atnericana, Bancroft, Zoiil. Journal, i\, 144, ls:;8, Jamaica. 

 Cephalnptcrajohni, MuLLEU it Hexle, Plagiostomen, ISG, 1838, West Indies. 

 lirnchioptilon humiltoni, Newman, Zoiil., 74, 1849, Gulf of California. 

 Uiabolkhlhijs ellioUi, Holmes, Proc. Elliott Soc. Nat. Hist., I806, 39, Charleston. 

 Mania hirostris, JoBDAN & Gilbert, Synopsis, 52, 1883. 



Subclass HOLOCEPHALI. 



(The CHIMyERAS.) 



Skeleton cartilaginous. Gill cavity with 4 clefts within, but having 

 one external opening only, which is covered by a fold of skin. No sjiir- 

 acles. Mouth inferior. Jaws with teeth, confluent into bony plates; 

 upper jaw, palate, and hyomandibular coalescent with the skull; intestine 

 with a spiral valve. Pectoral tins normally developed, placed low ; ventral 

 fiius abdominal, with claspers in the male. Derivative radii sessile on the 

 sides of the basal bones of the limbs. Skin scaleless, its muciferous sys- 

 tem well developed. This group contains a single order, Chimkroidei. 

 (HOLOCEPiiALA, Cat., Gunther, viii, 348-352. ) (('(Auf, solid; /ce^a/,//, head). 



Order H. CHIMKROIDEI. 

 (The Chim.eroids.) 



Characters of the order included above. The group includes one exist- 

 ing family, Ciiim.erid.e. (xiufupn, chimajra; fZriof, resemblance.) 



Family XXIX. CHIM^RID^. 



(The Cuim.eras.) 



Body elongate, rather robust anteriorly, tapering posteriorly. Head 

 compressed; mouth small, inferior, the upper lip deeply notched. Nos- 

 trils confluent Avith the mouth, separated by a narrow isthmus; jaws 

 with the teeth confluent into 4 bony lamina3 above and 2 below. No 

 spiracles. Pectoral fins free, placed low ; ventral fins abdominal, many- 

 rayed, provided in the male with claspers; dorsal fin usually divided, 

 anteriorly with a very s^trong spine, which is grooved behind; caudal 

 fin low, fold-like. Skin naked, rarely somewhat prickly. Lateral line 

 present, usually with numerous branches anteriorly. Three free gills 

 and 2 half gills, 1 on each side; isthmus moderate; gill rakers small. 

 Oviparous, the egg cases long, elliptical, with silky filaments. Genera 4, 

 (the following and CaUorhyiichus); species about 7. Fishes of singular 

 appearance, found only in the seas of the cold regions. Numerous 



