126. MALTHID^. 849 



472.— HI]W[Al\TOL,OPIIUS Reinhardt. 



{Cori/nolojthiis Gill.) 



(Reinharrlt, Dansk. Vidensk. Selsk. Nat. 1837, 74 : type Himantoloplius granlandicus 

 Reinhardt.) 



Body and head oval, compressed. Skin more or less prickly. Mouth 

 moderate, the cleft oblique, the joint of the mandible below the eyes. 

 Gills in ^2.J pairs; gill-arches armed with dentigerous tubercles. Spin- 

 ous dorsal represented only by a single long rostral spine, the basal 

 element of which is procumbent and subcutaneous. Greeidaud. (f,aa?, 

 a thong; hxfvq, tuft.) 



1310. H. g'i'«enlandicus Reinh. 



Body oblong-oval. Cephalic ray provided with about 11 tentacles. 

 Depth 2J. D. 1-9; P. 12. Greenland. {Gill.) 

 (Reiubiirdt, 1. c. 74; Gill, Fioc. U. S. Nat. Mas. 1878, 218.) 



1311. H. rciiiEBardti Liitkeu. 



Body short-oval. Cephalic ray § length of head, with about 8 ten- 

 tacles. Skin sparsely covered with thorn-like prickles. Depth 1J-. 

 D. I-o;P. 17. Greenland. {Gill) 



(Liitkeu, Koug. Dansk. Videusk. Selsk. 1878, 321: Corunoloplms rcinhardii Gill, 1. c. 

 2VJ.) 



Family CXXVI.— MALTHIDvE. 



{The Bat- fishes.) 



Head very broad and depressed, the snout more or less elevated, the 

 trunk short and slender. Mouth not large, subterminal or inferior, the 

 lower jaw included; teeth villiform or cardiform. Gill-opeuings very 

 small, above and behind the axils of the pectoral fins. Body and head 

 covered with bony tubercles or spines. Spinous dorsal reduced to a 

 small rostral tentacle, which is retractile into a cavity under a promi- 

 nent process on the forehead; in one genus the rostral tentacle is ob- 

 solete; soft dorsal and anal tins small and short; ventrals well devel- 

 oi;ed; pectoral fin well developed, its base strongly angled, with long 

 j)seudobrachia and 3 actiuosts. Branchiostegals 5; no pseudobranchiae. 

 Genera 3; species about 10; chiefly American. 



{I'aliciilali part; genera Malthc and Ilaliciitwa Giinther, iii, 200-205.) 



a. 8no\it produced; teeth on jaws, vomer, and palatines; mouth small. 



b. Ko.'stral tentacle y)resent Maltiik, 473. 



aa. Snout obtuse;; disk orbicular. 



c. Mouth small; rostral tentacle obsolete; teeth on vomer and palatines. 



Halieutichtuys, 474. 

 cc. Mouth wide; rostral tentacle present; no teeth on vomer or p;ilatin(!S. 



Halikut^ea, 475. 

 Bull. Nat. Mus. No. IC 54 



