HEMISINUS. 



Plate II. 



Species 6. (Fig. a, b, Mus. Cuming.) 



HEMISINUS TENELLUS. Hem. testa subulato-turbinatd, 

 tenuiculd, olivaceo-litted, anfractibus octo, convexis, 

 undique lineari-sulcatu ; aperturd ovatd, columella te- 

 nue calloso-conlortd. 



The delicate hemisinus. Shell subulately turbinated, 

 rather thin, olive-yellow, whorls eight, convex, linearly 

 grooved throughout; aperture ovate, columella thinly 

 callously twisted. 



Hah. Pernambuco. 



A shell of slight substance, finely linearly grooved 

 throughout, with the appearance of being scarcely mature. 



Species 7. (Fig. a, b, Mus. Cuming.) 



Hemisinus Edwakdsii. Hem. testa angusie turriculatd, 

 olivaceo-luted, anfractibus novem ad octo, superne ob- 

 tuse angu/atis, delude planatis, liris conferlis undique 

 funiculatis, sitturis subcanaliculatis ; aperturd parvd, 

 subquadrato-oratd, labro superne conspicue sinuato et 

 emarginaio, columella incurvd, basl subtruncatd. 



Edwards's Hemisinus. Shell narrowly turriculated, 

 olive-vellow, whorls nine to ten, obtusely angled 

 round the upper part, then flattened, corded with 

 close-set ridges throughout, sutures slightly chan- 

 nelled ; aperture small, somewhat squarely ovate, lip 

 conspicuously sinuated and notched at the upper part, 

 columella incurved, slightly truncated at the base. 



Batistoma Edwardsii, Lea, Obs. vol. v. p. 52. pi. 30. f. 1. 



Hah. Pernambuco. 



This is the species of which an uncoloured copy of Mr. 

 Lea's figure was given at Fig. 8, in the second Plate of 

 Pirena, under an impression that it belonged to the Mela- 

 natria division of the Melaniadce. Its place is clearly with 

 Hemisinus. There are several fine specimens in the col- 

 lection of the British Museum. 



Species 8. (Fig. a to /, Mus. Cuming.) 



Hemisinus Behnii. Hem. testa ehngato-turritd, solid i- 

 usculd, luteo-olivaced, interdum tenebrosd, punctis rufis 

 linearibus aspersd, anfractibus octo ad decern, dec/iri- 

 planatis, lavibus, versus aperturam spiraliter suleatis, 

 ultimo interdum superne concavo-angulato ; aperturd 

 subanguste ovatd, columella calloso-contortd. 



Bern's Hemisinus. Shell elongately turreted, rather 

 solid, yellowish-olive, sometimes darker, sprinkled 

 with linear red dots, whorls eight to ten, slopingly 

 flattened, smooth, spirally grooved towards the aper- 

 ture, last whorl sometimes concavely angled round 

 the upper part ; aperture rather narrowly ovate, colu- 

 mella callously twisted. 



Hab. Pernambuco. 



The specimens figured of this interesting species were 

 collected by Professor Behn, of Kiel, together with most 

 of the Hemisini figured in this Monograph, during the 

 voyage of the Danish man-of-war ' Galatea ;' and I have 

 great pleasure in naming it after him. 



January, 1860. 



