ADDENDA 88. SPARID.E ARGYR0P8 929 



Piige 557. The groups called Stenotomus and Lagodon should be 

 recognized as genera distinct from Diploclus, and the prior Argijrops* 

 S\v. (Class'n Fish, etc., 1839, 221; type Spams spinifer Forslc.) slionld 

 l)robal)ly be used for the former. 



Page 557. The si)ecies called in the text Spams clmjsops and »S^;^r».s 

 acukatus are identical. The species belongs to the genus Anjyrops, 

 and should stand as: 



S§0. A. eBsB'ysojJS (LO J-A- G. — Souihn-n Port/ce. 



Differing from the common northern scup, A. versicolor\ (jMitch.) J. & 

 G, { = 8. argyrops xVuct. not of Linn.), in the following resiiects: 



Body more elongate and less elevated anteriorly; molar teeth 

 coarser; size larger. Head ^) depth 2^. D. XII, 12; A. Ill, 11; 

 scales 7-48-14. L. 18 inches. Cape Cod to Florida. The specimen 

 described iu the text (25170 U. S. ]Sat. Mus.) is unusually deei)-bodied 

 for this species. 



Page 557. After Argyrops versicolor add: 

 881 {h). A. capriasaas (Bean) J. & G.— Goa/'s Head Forgec. 



Light olive; silvery below; the young with faint very narrow darker 

 bars. Body subovate, the back anteriorlj^ much more elevated than in 



*Tlio cranial characters of Arf/!iyop:< arc very flifferciit from those of TVipJodus, as 

 is shown by the following account of the skulls of the two genera, kindly furnished 

 to us by Professor Gill : 



In DipJodiis "the skull is extended downwards to the chevron of the vomer, and is 

 notched on each side behind the forehead; the parasphenoid has a varying Inferior 

 crest, which is entire near its posterior decurrent processes; forehead l)road, well de- 

 fined, convex transversely above the orbits, abruptly terminated behind by the con- 

 vergence of the external lateral crests into the occipital, the occipital crest ending 

 abruptly behind the forehead, and thickened with vertical osseous strire; the inner 

 as well as outer lateral crests erect and laminar, and converging more or less forwai'ds. 



"In DipJodnn proper the forehead is moderately broad and the bones contracted 

 forwards, the parasphenoid with a superficial inferior crest, convex forwards, and 

 little developed posterior decurrent processes. 



"In Arcliomriiiis Gill, the fonrlu^ad is very broad and the bones wide and almost 

 even with tlic ])refioutals in front; the parasphenoid with a deep inferior crest, and 

 emarginated anteriorly and with enlarged posterior decurrent processes. 



"In the genus Sttnolomns (Aroj/rops) the skull is extended forwards to the head of 

 the vomer and notched on each side behind the forehead; the parasphenoid has tho 

 inferior crest low, and little developed posteriorly-decnrrent processes; the forehead is 

 narrow and ill-defined behind, its surface of compact texture, but with a few foramina 

 and two longitudinal grooves on each side; the occipital crest moderate, extending but 

 little forward of the supraoccipital bone, and not overhanging backward; the crest 

 strengthened by a longitudinal lateral ridge on each side, terminating backwards in 

 maniilliform projections, the inner and outer lateral crests not procurrcnt on the fore- 

 head.'' 



t Lnhrun rcmicolor Mitch., Trans. Lit. and Phil. Soc, 1815, 1, 404. Spurua argyropa 

 li. is the young of A. chr!ft<o})s, with "2(1 and 'M dorsal spines iilamcntous. 



