318 SOLARIELLA. 



style of sculptuve is totally ditlerent. The measurements given above 

 are taken from an almost exceptionally fine specimen. ( Watson.) 



Of Azores Is., 450-1000 fras. 

 T. {Margnritn) lima Watson, Jouni. Linn. Soc. Lond. xiv, p. 

 703 (not Uiiia Phil.). — T. (Margarita) rhina Watson, Challenger 

 Gasterop., p. 80, t. 5, f. 1 . 



Var. CLAY ATA Watson. PL m, figs. 98, 99. 



Shell small, conical, with a high spire and a tumid base, a round 

 mouth, and a deep umbilicus, and covered with sharp prickles. 

 Sculpture : spirals — there are several small threads, two of which, of 

 equal strength and prominence, angulate the whorls — one at the basal 

 contraction, the other about halfway up the whorl ; on the base they 

 are somewhat closer set. The outer lip does not meet the carinal 

 thread, but the one below. Longitudinals — the wh(de surface is 

 crossed bv close-set, slightly oblique narrow laminte, which, in cross- 

 ing the spirals, rise into sharp vaulted prickles w hose faces are turned 

 towards the month. Color white, with a pearly luster. Spire very 

 high. Apex minute, with the small embryonic \\ whorl rising from 

 a minute flat. Whorls 6], angnlated and narrow in the spire, but 

 the last inflated and expanded. Suture deej^ly impressed, somewhat 

 depressed, and very strimgly defined. Mouth j)erpendicular, rouiid, 

 slightlv pointed on the base, and angnlated at the u])per carina. 

 Outer li}) sharp, advancing far across the body towards the pillar-lip. 

 Pillar-lip depressed upon the umbilicus, then rounded and sinuated, 

 slightly toothed at the point of the pillar. Umbilicus wide and 

 deep, but internally narrowed. 



Alt. -17 in. diam. -13. Mouih, height 0-07, breadth 0-07 in. 

 ( Watson.) 



The peculiarly high narrow spire and the vaulted prickles are 

 very characteristic features of this species, none of the specimens of 

 which are adult. When full grown there would j)robably be an 

 additional whorl, which w'ould add a broad base to the high narrow 

 spire. There seems to be some variation in the number of the 

 spirals. I have put a query to the specimens from Pernambuco, 

 because, though identical in other respects, the embryonic whorls are 

 slightly larger and more tumid. The curves of the mouth-edge have 

 some suspicion of an infra-sutural sinus, and the form of the ])illar 

 is also suggestive of Basilissa, but the form of the mouth is wholly 

 unlike that genus. ( Watson.) 



Off Calebra Id., W. Ind., 850 fms. ; off Pernambuco. G75 fms. 



