. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 78 Annals of the South African Museum. I propose to call it : Abyssochrysos melanioides, gen. and sp. no v. Shell elongately turreted, covered with a pale, brownish-golden periostracum ; all the specimens are decollate, number of whorls remaining in the type 13 ; the shell is furnished longitudinally with straight, prominent, distant ribs, and probably spirally grooved throughout, but through the periostracum one only sees about 4 lirae with broader, flat interstices immediately above the suture ; in
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 78 Annals of the South African Museum. I propose to call it : Abyssochrysos melanioides, gen. and sp. no v. Shell elongately turreted, covered with a pale, brownish-golden periostracum ; all the specimens are decollate, number of whorls remaining in the type 13 ; the shell is furnished longitudinally with straight, prominent, distant ribs, and probably spirally grooved throughout, but through the periostracum one only sees about 4 lirae with broader, flat interstices immediately above the suture ; in the type these lirae are unusually indistinct; the upper part of each whorl, some way below the suture, is encircled by a raised line, which forms rather acute prominences where it crosses the axial ribs :. >^$^ HI Fig. 2.—Abyssochrysos melanioides, I, II, two aspects of anterior portion of animal, enlarged; /, foot; p, penis ; tt, tentacles; o, plane of operculum. Ill, operculum. all the spiral sculpture varies much in degree ; suture impressed ; the base of the last whorl appears to be rather irregularlv spirally grooved throughout ; umbilicus none ; aperture subcircular ; oper- culum thin, transparent, 4-whorled, less closely coiled than in a Littorina. pale reddish-brown in colour. Long., 41 mm. ; diam. max., 12. Aperture, long., 9 mm. ; lat., 6-5. For the following report I am greatly indebted to Peile, and I give it verbatim. The drawings of the animal and of details of radula are also his. I am equally indebted to Mr. A. E. Salisbury for the photograph of the shell with the operculum. " The animal has well-developed tentacles but no eyes. " There is a buccal armature consisting of two lateral lobes, each of gnat-wing shape ; they appear to be composed of crowded conical processes, which form also a serrated margin on the working edge of the lobe. " The radula is taenioglossate, with formula That of the. Please note that these i
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
