MAZATIAN UNIVALVES 511 



alternaUs vnarnilis fusco-ptirpureis ornata ; are& hrfrasuturali 

 Candida, lined spirali vix fused ; anfr. normalibus vi. suhrotun- 

 datis, suturd impressd ; eostis circiter xiii. 7'adiantihus, rotun- 

 datis, haud valde extantihus, aperturam versus suhohsoletis ; 

 interstitiis undulatis ; superfide suhnitidd, circa basin tenuiter 

 striulatd; aperturd subelongatd, subquadratd ; labro incrassato, 

 intus Y.-dentato ; dente ioostico valido ; labia parum extante, 

 supra columellam corrugato ; canali brevissimo. 



This species is named, in remenabrance of J. S. Gaskoin, Esq. 

 who had the kindness to bring his extensive knowledge of the 

 ColumbellidEe to beai* on the Mazatlan specimens. In removing 

 the incrustation from the only specimen found of this species, 

 the shell proved the softer and gave way ; leaving no trace of 

 its existence but the description and sketch in my provisional 

 catalogue. It happened however that M. Petit had sent to 

 Mr. Gaskoin one specimen from Callao, which so nearly agrees 

 with the former that the above diagnosis is pretty confidently 

 presented for it. In many respects it appears to resemble 

 ColumbeUa tfeniata, Phil, in Zeit. f. Mai. 1846, p. 54, no. 26. 

 Long. '26, long. spir. '14, lat. '13, div. 33". 



Hah. — Mazatlan ; 1 sp. ofi'Chama; L'pool Col. — Callao ; 1 sp. 

 in Mus. Gaskoia ; Petit. 



Tablet 2430 contains a sketch. 



653. Anachis eufotincta, n. s. 



A. f. parvd, solidiore, comjoactd, spird parum elevatd, nrav' 

 ginihus excurvatis ; albidd, aurantio 2Jallide tinctd, columella 

 et basi aurantio-rufo dense imbutis ; anfr. iii. niicleosis, Icevibus, 

 iii. normalibus ; t. juniore circa peripJieriam subangulatd, 

 tumidd ; eostis radiantilms xii-xv. latis, t. juniore ad peripher- 

 iam, t. adultd ad basin continuis, aperturam versus rarius 

 ohsoletis ; lineis spiralibus subim2iressis, in eostis obsoletis ; 

 aperturd subelongatd ; labro intus circiter vi.-dcntaio, postice 

 sinuato ; labio sublcBvi, parum, extante. 



This unpretending little species is easily known from A. 

 pygmsea and its congenei's, by the very light colour, and the 

 deep orange-red stain at the base. Long. "143, long. spir. •068, 

 lat. -075, div. 50". 



Jffai.— Mazatlan ; 15 sp. (perfect or fragmentary) off Chama 

 and Spondylus ; L'pool Col. 



