1894. PEOCEEDINGS OF THE NATIONAL MUSEUM. 457 

 B. Dorsal spines 27-38. Teeth in jaws erect, fine. Ventrals separated 



- POLYAC.\NTHONOTlN.E. 



1. Snout proboscis-like. Dorsal anil anal spines lonj^, llexible, the latter 



not exceeding 30 in number. Lateral line strongly arched 



POLYACANTHONOTUS. 



2. Snout not very elongate. Dorsal and anal sjiiues low and strong, the 



latter 50 or more in number. Lateral line straight Macdonaldia. 



II. Jaws modified to form a suctorial mou^h. Dorsal spines close together, united 



by membrane to form a high triangular fin Lipogenyid^e. 



A. Dorsal spines 5, with 5 soft rays. 



1. Lateral line obsolete LiP( xjenys. 



Genus NOTACANTHUS, Bloch. 



Notacantlius, Bloch, Abhaudl. Bohm. Gesellsch., 1787. — Lackpkdk, Hist. Nat. 

 Poiss., 1804.— Goodc, Proc. U. S. Nat. Mus., in, 1880, p. 555. 



Acanthonotus, Blo(;h, Ichthyologia, xii, 1797, p. 113, pi. ccccxxxi. (No descrip- 

 tion separate from tliat of species A. iiasns.) — Schneider, Bloch, Syst. Tchth., 

 1801, p. 390, pi. XLVii. 



CampyJodoii, Fauhicics (Jidc Gcnthek). 



KEY' TO THE SPECIES OK NOTACANTHUS AND (ilGLIOUA. 



I. Origin of dorsal consulerably in advance of that of anal. Lip normal, continu- 



ous NOTACAN THUS. 



A. Body much higher over ventrals than over pectorals, and comparatively 



short. 

 1. Lateral line in front of dorsal spines, following ]iro(i]e of liack, then sink- 

 ing to median line of body. D. X-Xl. 

 a. First dorsal spine behind vertical from axil of ventral. A. XIII- 



XIV. (XVII?) N. NASUS. 



Z». First dorsal spine in front of vertical from insertion of ventral. A. 



XVII N. ANALIS. 



B. Body little higher over ventrals than over pectorals, and comparatively 



ehmgate. 



1. Lateral line iuconsjiicuous, nearer to dorsal than to ventral outline 



throughout, not arched anteriorly. D. VI-VIII. 

 a. Last dorsal spines over anterior part of soft anal. A. XII. 



N. nONAPAUTII. 



h. Dorsal and soft anal not passing same vertical. A. XIII-XIV. 



N. Sexspinis. 



2. Lateral line slightly arched above pectoral, sinking to median line of 



body in advance of first dorsal spines. D. X. 

 a. Last dorsal spine over fifth from last anal siiine. Fins low. A. XIX. 



N. PHASGANORXTS. 



II. Origin of dorsal over the vent. Lip absent in middle portion Gigliolia. 



A. Body much higher over ventrals than over pectorals: comparatively short. 



1. Lateral line arched over ventrals and pectorals. I). VIII. 



a. Snout thick, swollen. A. XV-XVIII (i. moseleyi. 



NOTACANTHUS NASUS (Bloch). Jordan and Gillxrt. 



Acanthonotus nasns, Bloch, Ausl. Fische, xii, p. 111. — Schneider, Bloch's Sys- 

 tema Ichthyologhe, 1801, p. 390. 



Notacanthus nasus, Bloch, Fische, vii, p. 113, pi. 131. — Cuvier and Valen- 

 ciennes, Hist. Nat. Poiss., viii, p. 467, pi. ccxxi.i. — Lutken, Vid. Med., 

 1878, p. 145. — GiJNTHER, Cat. Fish. Brit. Mus., in, p. 54; C/iane«r/cr Report, 

 XXII, p. 248. — Giglioli, Elenco. 94. — Vaillant. Voy. Travailleur and Talis- 

 man, p. 317. 



