Zoological Society. 227 



Eyes close together, placed under the frontal spine ; the peduncle 

 is much shorter than, and not nearly so thick as, the basal joint of 

 inner antennae ; the upper side covered with small spines. 



Outer jaw -feet resemble those oi Lithodes, especially in L. hrevipes. 



Abdomen very wide, rounded at the base, triangular at the end, 

 formed of many plates of different sizes, which are close together ; 

 the basal segment is crescent-shaped, and within its sinus are in- 

 cluded the other plates, which are arranged in four longitudinal series ; 

 the outer series narrow, the other three wide ; the plates of different 

 sizes and shapes, with two supplemental plates, one on each side of 

 the central row, and at its base ; the plates with rough and bristly 

 tubercles ; the first joint of abdomen with two round depressions, the 

 base of each being coriaceous-like, and furnished with only a few 

 small scattered calcareous tubercles ; the middle of the hind-edge 

 with four tubercles placed in pairs. 



Hab. North America, mouth of the Columbia River; Sir George 

 Simpson. In Mus. Brit. 



3. Descriptions of new species of Turbo, chiefly from tue 



COLLECTION OF HuGH CuMING, EsQ., F.L.S. By LoVELL ReEVE, 

 F.L.S. ETC 



Turbo natalensis. Turb. testd vix imperforatd, orbiculari, de- 

 pressiusculd, anfractibus spiraliter sulcatis, sulcis regulariter 

 concavis latiusculis ; olivaceo-viridescente, rufo radiatim maculatd 

 et punctatd, intus argented ; operculo testaceo, cristato. 



Hab. Port Natal ; Wahlberg. 



The operculum of this beautiful species is a tufted mass,, like that 

 of the T. sarmaticus. 



Turbo saxosus. Turb. testd imperforatd, ovatd,spirce suturis sub- 

 profund^ impressis ; anfractibus supern^ concavo-declivibus, medio 

 angulatis, transversim obscure liratis, tuberculis juxta suturas coro- 

 natis, infrci nunc muticis, nunc tuberculis bi-tri-seriatim armatis, 

 laminis subtilibus, longitudinaliter obliquis , peculiariter exsculptis ; 

 viridi albimaculatd, intus argented; operculo testaceo, crasso. 

 Hab. West Columbia ; Cuming. 



Having observed this species in a private collection, under the 

 name saxosus, in manuscript, I adopt it, though not a very appropriate 

 one, lest it may have been published and escaped my observation. 

 The rows of tubercles are extremely variable, being even more pro- 

 minently developed in specimens of smaller growth than is here re- 

 presented. 



Turbo laminiferus. Turb. testd umbilicatd, ovatd, spira suturis 

 canaliculatis ; anfractibus subtubulosis, spiraliter costatis, costis 

 distantibus, et, cum interstitiis, pulcherrimi concentric^ laminatis, 

 aperturd rotundd ; viridi, nigro longitudinaliter undatd, inths ar- 

 gented. 

 Hab. Mouth of the Victoria river. New Holland. 

 A very beautifully sculptured species, allied to the T. Ticaonicus, 

 but perfectly distinguished from it, in being of uniformly smaller size, 



15* 



