TEREBRA.— Plate XVII. 



drically terete, whitish, tessellated with longitudinally 

 square orange spots, red-dotted at the sutural mar- 

 gin, shining, whorls flatly convex, divided at the 

 upper part by a sharp groove, longitudinally closely 

 puckered, the folds disappearing on the last whorl ; 

 aperture rather narrow, columella straight. 



Lamarck, Anim. sans vert. vol. x. p. 246. 



Hal. Amboyna. 



Partaking of the character of T. cingula and Senegulensis, 

 but more slender and shining, and more distinctly tessel- 

 lated with colour. 



Species 78. (Mus. Cuming.) 



Terebra Souleyeti. Ter. testa eloiigato-aciiminatd, 

 rufescente-grised, immaculatd, anfractibits declivi-con- 

 vexis, angustis, sulco pertuso superne divisis, longitudi- 

 naliter dense flexuoso-costatis, inlerstitiis spiraliter 

 elevato-striatis ; aperturd parvd, columella brevissimd, 

 cylindraceo-contortd. 



Souleyet's Terebra. Shell elongately acuminated, 

 reddish-grey, unspotted, whorls slopingly convex, 

 narrow, divided at the upper part by a pricked groove, 

 longitudinally closely flexuously ribbed, interstices 

 spirally elevately striated ; aperture small, columella 

 very short, cylindrical^ twisted. 



Deshayes, Pro. Zool. Soc. 1859, p. 303. 

 Eab. Gulf of Mexico. 



A well-marked species, known only by a single speci- 

 men in the collection of M. Deshayes. It is crowded with 

 flowing ribs, somewhat after the manner of T, larva- 

 formis, and the encircling groove is represented by a row 

 of deep pricks in the interstices. T. difficilis is very simi- 

 lar, with a less twisted columella. 



Species 79. (Mus. Cuming.) 



Terebra albida. Ter. testa suhdald, ad basin ventri- 

 cosd, eburned, ferrugineo interdum pallidissime tinctd, 

 anfractibus concavo-planatis, lavibus, ultimo rotundato, 

 suturd subacutd ; aperturd ovatd, subeffusd, columella 

 brevi, contorld. 



The whitish Terebra. Shell subulate, ventricose at 

 the base, ivory-white, sometimes very faintly stained 

 with rust, whorls concavely flattened, smooth, last 

 whorl rounded, suture rather sharp ; aperture ovate, 

 rather effused, columella short, twisted. 



Gray, Pro. Zool. Soc. 1834, p. 63. 



Hab. Australia. 



The encircling groove of this species is a mere concave 

 depression. The last whorl has a peculiar rounded form. 



