656 



REPORT 1863. 



337. Litorina scutulata, Gld. E.E.+lepida, Gld. Var. =p/<?w, Old. Small, solid, 



pointed, flattened, smoothish. Rocks between tides, Lord. 



338. ? Assiminea subrotundata, n. s. Like a very thin Litorina : ashen, plain. 



339. ? Paludinella, sp. May be an aberrant Assiminea. 



340. Lacuna vincta, Mont. auct. Circumboreal. 



341. Lacuna porrecta, n. s. Upper whirls flattened, effuse anteriorly j chink large. 

 341 b. Lacuna ?var. effusa. Larger, taller, more swollen. 



341 c. Lacuna ?var. exa>quata, same shape but flattened. 



342. Lacuna solidula, ~Lov.=carinata, Gld., not A. Ad.= Vodelia siriata, Gabb. 



Solid, variable, chink small ; sometimes keeled or angular. 



342 b. Lacuna ?var. compacta. Very small, narrow, orange, scarcely chinked. 



343. Lacuna variegata, n. s. Very tall, elliise, irregular \vith wide chink : clouded 



or with zigzag stripes : like decorata, A. Ad. 



844. Lacuna unifasciata, Cpr. P. Z. S. 1856, p. 205. Small, glossy, generally with 

 a coloured keel, sometimes broken into dots. Var. aurantiaca, keel obsolete, 

 resembling the chinked Phasianellce. 8-10 fin. Cp. 



345. Isapis fenestrata, n. s. Like oroidea, with sharp distant ribs. 



346. Isapis obtusa, n. s. Whirls flattened behind : ribs swollen, uneven. 10-20 



fin. Cp. 



Family Rissoida. 



347. Rissoina interfossa, n. s. With 5 sharp keels crossing 14 strong ribs. 8-10 fm. 



348. Rissoa compacta, n. s. Sculptured like Beanii, with short broad whirls. 



349. Rissoa acutelirata, n. s. Alvanoid : 15 sharp, distant, spiral riblets, travelling 



over 18 sharp distant ribs, obsolete in front. 



350. Alvania reticulata, n. s. Open network : radiating threads travelling over 19 



stronger distant spiral threads. 



351. Alvania jilosa, n. s. Turrited : pillar purple-stained : 18 close spiral striae, 



passing over very faint waved riblets. 



852. Fenella pupoidea, n. s. Variegated, truncatelloid shape. 20 fm. rare, Cp. 



853. Barleeia subtenuis, n. s.=Ifydrobia ?ulvee, Maz. Cat. no. 417 ; but with normal 



Barleeoid operculum. On grass, Cp. 



353 b. Barleeia ?var. rimata. Whirls more swollen : base chinked. 

 354., Barkcia haliotiphila, n. s. Longer, narrower, much smaller. On If. splendent. 

 355. Amphithalamus inclusus, n. g., n. s. Habit of minute Nematura ; labrum n"t 



contracted, but labium in adult travels forward to meet it ; leaving a chamber 



behind. 1\ ucleus cancellated : base bluntly ribbed. 



142 



