44 



Fam. Agonidae. 



Gren. Ag'omxs, Schneid. 

 Bloch, Syst. Ichth., (ed. Schiicid.), p. 104 (ISOl). 



10. Agonus decagonus, Schneid. 1801. 



PI. II, Fig. 11 — 12. 



t Coitus cntaphractns, Fabr. Fauna (xrocnl. No. 112, p. 1.').') (1780). 

 Agonus decagouns, Schneid. Bloch, Sy.st. Ichth. p. lO.'i (ISOl). 

 Aspidophorns decayomis, Ouv. & Val. Hist. Nat. Poiss. torn. 4, p. 223 



(1S2!)). 

 Aspidophoi-as spiiiosissimus, Kr. Naturh. Tidsskr. 2 Række, 1 B. p. 



2.50 (1844). 

 Aspidophonis malariiioides, Deslongeh. Méra. Soc. 'Lin. Xorni. toni. 9, 



p. 11)7 (1S.')3). 

 Leptagonus spinosissimus, (.Till, Pmc. Acad. Nat. Sci. Philad. 18(il, p. 



I(i7 1 181)1). 

 Archagonus decagomis, (tIII, Pi'oc. Acad. Nat. Sci. Philad. (teste Liitk.) 



Diagn. Legemet smalt, dets største Bredde indelwldes 

 S, Hovedets Længde 5 Gange i Totalt. Det gjeiinemsnitlige 

 Ant al af Skjolde er: mellem. Dorsalerne 4 Par; fra Nakken 

 til Iste Dorsal 3 Par, indtil 2deH Dorsal 17 Par ; mellem 

 Ventralerne og Analen 12 Par. Foran Ventralerne findes 

 23 — 2o Skjolde. Pectoralens Længde nbetydeligt større, end 

 Hovedets. Skjægtraadene 5 paa liver Side, (4 enkelte i Mund- 

 vigen, 1 kløvet fotiil i Underkjæren ). Sidelinien har 23 — 

 25 Porer. Et Par korte Tome paa Snnden, et Par Knitder 

 orer Øjnene, og et Par større Knuder paa Panden. Farvmi 

 graagnl, med 2 — 3 større graahrnne Tverpletter; Pectoralen 

 og Caudalen henimod Spidsen hrmisorte. Hannen har læn- 

 gere Ventraler, end Hunnen. Størrelsen indtil 210""". 



M. B. 6: 1 D. 6 (5 ell. 7); 2 D. 6- 

 P. 14—16; V. 3; C. -ijlll-l. 



Localit. fra Nordh. Exped. : 

 og Spitsbergen. 



-7(8); A. 7 (6 ell. 8); 

 Lin. lat. 23—26. 



Havet mellem Nordcap 



Bemærkninger til Synonymien. En udforlig Be- 

 skrivelse er givet. foruden af (.'uvier og Valene. (Hist. Nat. 

 Poiss. tom. 4). af Ki-øyer i Naturh. Tidsskr. 2 Række 

 1 B.. som i 1844 beskriver saavel det udvoxede Individ 

 (Aspidophorns decagonus), som Ungen (Aspidophorus spi- 

 nosissimus) som separate Ai-ter. og afbilder begge i Gai- 

 mards Reise-Værk (Voyage Scand. Lap. etc. 1838—40, 



Fam. Agonidæ. 



Gren- Ag'onvxs, Schneid. 



Bloch, Syst. Ichth., (ed. Schneid.), p. 104 (1801). 



10. Agonus decagonus, Schneid. 1801. 



Pl. II, fif.-. 11—12. 



t Cottus cataphractus, Fabr. Fauna Grænl. No. 112, p. 15.") (1780). 

 Agonus decagonus, Schneid. Bloch, Syst. Ichth. p. 10.5 (1801). 

 Aspidophorns deragonus, Cuv. & Val. Hist. Nat. Poiss. tom. 4, p. 223 



(1829). 

 Aspidophorus spinosissimus, Kr. Naturh. Tidsskr. 2 Række, 1 B. p. 



250 (1844). 

 Aspidophorns ynalarmoidcs, Deslongch. Méra. S(jc. Lin. Norm. tom. 9, 



p. 167 (1853). 

 Leptaijonus spinosissimus, (rill, Proc. Acad. Nat. Sci. Philad. isiil, p. 



I(i7 (IS(il). 

 Archagonus deeayomts, Gill, Proc. Acad. Nat. Sci. Philad. (teste Liitk.) 



Diagnosis. — Body slender, greatest breadth to total 

 length as I to 8, length of head as 1 to 5. Normal number 

 of shields: between the dorsals 4 xmirs, from, nuchal region 

 to 1st dorsal 5 pairs; to commencement of 2nd dorsal 17 

 pairs; hetween the ventrals and the anal 12 pairs. Anterior 

 to ventrals 23 — 25 shields. Length of pectorals slightly 

 exceeding that of head. Five cirri on either side (4 at 

 the angle of the mouth, 1 deft, out on the Imver jaw). 

 Lateral line rvith 23- — 25 mucous pore$. One pair of short 

 spines on snout; above the eyes one pair of knotty protuber- 

 ances, and a pair, of larger size, on the front. Colour 

 greyish-yellow, relieved -with- 2 — 3 large transverse .ywts of 

 greyish-hrotmi ; points of pectorals and caudal brownish- 

 black; ventrals longest in male. Length reaching 210'"'"'. 



M. B. 6. 1 D. 6 (5 or 7); 2 D. (i—7 (8); A. 7 (6 or 8); 

 P. 14—16; V. 3; C. 2/ii/2. Un. lat. 23—25. 



Locality (North Atl. Exped.) : — The open sea. 

 between the North Cape and Spitzbergen. 



Bemarks on the Synonymy. — A full description 

 of tiiis species has been given by Cuvier and Valene. 

 (Hist. Nat. Poiss. tom. 4) ; also by Kroyer (Naturh. Tidsskr. 

 2 Række, 1 B.), who, in 1844. described the full-grown 

 tisli (Aspidophorus deragonus) and the uumature form 

 (Aspidophorns spinosissimus) as two species, both of which 

 he subsequently figured for Gaimard's work (Voyage Scand. 



