11 



nosis araneosis reticulata : facies interna albida ; margine sim- 

 plici, acuto ; limbo marginali planulato, rubiginoso, radicoso. 

 Long, f, lat. I, alt. ^ poll. Hab. Sooloo Sea. 



A pretty little shell, most probably a Lottia, resembling some 

 of the species figured by Quoy, especially his orbicularis. In- 

 deed it is so like the reticulated variety figured in PI. LXXI. fig. 

 33, that the examination of a more extensive series might show 

 them to be identical. 



Siphonaria cornuta. Testa rudis, fuligino^a, valde depressa, 

 per-inequilateralis, radiatim striata, apice submediano, costis ad 

 15 inequalibus, ultra marginem prolongatis, prsecipue costa supra- 

 siphonali : cavitas parva, minime profunda, dextrorsum effusa ; 

 limbo marginali expanso, albo, vel fusco inter costas radiato. 

 Long. 1, lat. £■£, alt. \ poll. Hab. Mangsi. 



Allied to S. atra, to which it may possibly be traced by its va- 

 rieties ; but it is more elongated, less symmetrical, and the ribs, 

 which are much more numerous on the left than on the right side, 

 surpass the margin to a much greater extent. 



Siphonaria inculta. Testa parva, crassa, irregularis, de- 

 presso-conica, costulis 20-24 radiata ; apice sub-centrali : cavitas 

 profunda, latere sinistra prsecipiti, latere dextro declivi ; fundo 

 fusco nubeculato ; cicatrice musculari profunda ; limbo marginali 

 expanso, sei'iceo, hepatico ; margine costulis dentato. Long. 

 -jZjj, lat. ££, alt. £ poll. Hab. New Zealand. 



A small, rugged-looking species, easily distinguished by its 

 irregular, one-sided form, and its liver-brown interior. 



Siphonaria lateralis, (Couthouy MS.) Testa parva, fra- 

 gilis, inequilateralis, perobliqua, oblongo-ovalis, olivacea, sursum 

 fuscescens, costulis radiantibus ad 25 obtusis, nodosis, subequali- 

 bus : intus hepatica ; cicatrice musculari inconspicua. Long. J-, 

 lat. §, alt. | poll. Hab. Burnt Island, Orange Harbor. 



This might be regarded as the young of S. Lessoni. But be- 

 sides essential differences in the animal, the great inequality of 

 the two sides, the peculiar position of the apex and the more 

 coarse and nodular ribs, give it a peculiar character. 



Siphonaria lepida. Testa parva, tenuis, ovato-rotundata, 

 depresso-conica, cinereo-olivacea interdum violaceo tincta ; apice 

 submediano, obtuso ; costis radiantibus numerous depressis, quo- 



