Mollusca of the Arabian Sea, &c. 89 



Adrian O'Maley, of the Indian Government Telegraph 

 S.S- ' Patrick Stewart,' Karachi, wlio has much assisted 

 Mr. Townsend in many of his investigations. 



Latirus [Peristerma) pagodceformi's, sp. n. 

 (PI. I. fig. 8.) 



L. testa attenuata, fusiformi, fusca, ad medium costarum albescente, 

 deinde infra spiraliter fusco-zonata ; anfractibus decern, quorum 

 tres apicales pallide brunnei, vitrei, laeves, caeteris tumidis, apud 

 suturas multum imprcssis, longitudinaliter rotundicostatis, cosfcis 

 crassis, apud ultimum anfraetum decern, undique spiraliter filo- 

 liratis, interstitiis arete squamiferis ; apertura ovata, intus cinerea 

 vel pallidissime violacea ; labro tenui, simplici ; cohimella laevi, 

 nitida, obscure et oblique quadriplicata ; canali longo, pauUum 

 recurvirostri, brunneo-tincto. 



Long. 28, lat. 9-50 mm. 



Bah. Adhering to the telegraph-cable at 20 fathoms, mud; 

 lat. 25° N., long. 63° E. 



The nearest congener of this shell is L. [Peristernia) jnd- 

 chellus, Eeeve, of which we have seven examples, as far as 

 this region is concerned, from Cejlon, the Angrias Bank, 

 west of Bom.bay, and likewise from Muscat, where Mr. Towns- 

 end has dredged it at 10 fathoms. This new form differs in 

 its far more tumid whorls, pinched in and compressed at the 

 sutures, and likewise in the long, recurved, and fuscous-tinged 

 canal ; the whole spire is far more attenuate, tlie proportion 

 of the last whorl as breadth is to length being 8 : 15, while 

 in L. pulchellus it is 15 : 22 in a normal-sized example. 

 L. pagodceformis is ten-whorled, three being pale brown, 

 glassy, and apical ; the remaining seven are tumid, longitu- 

 dinally thickly and roundly ribbed, and spirally lirate ; colour 

 fuscous-brown, whitish towards the middle of each whorl, 

 where the ribs naturally are most prominent, and on the last 

 whorl just below this runs an indistinct spiral zone of darker 

 brown. The aperture is oval, coloured within cinereous or 

 very pale violet, never carnation or crimson as in pulchellus • 

 the outer lip is thin and normally simple, columella obscurely 

 and obliquely four-plaited ; canal long, recurved, suffused at 

 the base with brown. 



I may add that this species seems more distinct from 

 L. pulchellus than does L. nassoides, Reeve, though perhaps 

 the recurved canal of the latter may constitute a specific 

 character. Both are figured in the Conch. Icon. vol. iv 

 Turhinella, ^gs. Q6 & 11 {IMl). '' 



Two or three examples. 



