6 Dr. P. P. Carpenter on new Forms of Molhsca 



mellar thread for two whirls only. Operculum normal, with 

 thin edge, dark red. 



3.2. Lacuna porreda. 



L. testa L. puteolo simili, sed multo majore, spira magis exserta ; 

 seu onmino fusca, seu zona pallidiore, seu pallida liiieolis fusces- 

 centibus tenuissime spiraliter ornata ; epidermide tenuiter striata 

 olivacea seu viridescente induta; tenuiore, spiraliter tenuiter striata; 

 anfr. v., vix planatis, rapide augentibus, suturis impvessis, vertice 

 mamillato ; apertura tumente ; labio teiiui, vix parietem attingeute, 

 intus subrecto ; lacuna maxima, elongata, ad basin arcuata ; peri- 

 pheria expansa. Long. •52, long. spir. •'2, lat. -A, div. 80°. 



?Var. effusa : testa L.porrectce simili, sed multo majore ; spira elevata, 

 satis effusa ; anfr. tumidioribus, suturis valde iiiipressis ; aperturam 

 versus magis expansa. Long. 'Go, long. spir. "25, lat. 'b, div. 60°. 



?Var. excecpiata : testa Z. effuses simili, sed anfr. planati?, suturis 

 parum mipressis. Long. '5, long. spir. "2, lat. '\2, div. 80°. 



Hab, Neeah Bay [Swan). 



The form L. excequata is intermediate between the very dif- 

 ferent L. porrecta and L. effusa. The Lacuna vary so much 

 {vide Forbes & Hanley in loco) that, even with a large multitude 

 of specimens, it is not easy to state what constitutes a species. 



33. Lacuna {^. solidula, var.) compacta. 



L. testa L. solidulce, var., simili ; parva, sollda, compacta, angusta, 

 subturrita, marginibus spirse excurvatis : aurantiaca, interdum pal- 

 lidiore zonata ; anfr. subplanatis, suturis distinctis ; tota superticie 

 confertissime spiraliter striolata ; basi valde angulata, subplanata ; 

 apertura sub<juadrata ; colL-,mella vix lacunata. Long. '2'6y long. 

 spir. -I, lat. -17, div. 60°. 



Variat testa elongata : variat quoque columella normaliter lacunata. 



Hah. Neeah Bay [Swan). 



Possibly an extreme form of the very variable L. solidula, Lov. 

 {= L. carinata, Gld., non A. Ad., = Modelia striata, (jabb), yet 

 distinct in all ages. The young shells resemble small Litorince, 



34. Lacuna variegata. 



L. testa tenui, plus minusve elevata, soluta, irregular! ; adolescente 

 fusco-purpureo ; adulta livida, radiatim seu diagonaliter varie ir- 

 regulariter strigata, strigis fusco-aurantiaeis, ssepe ziczacformibus ; 

 anfr. vi., quorum primi compacti, apice subnianiiilato ; dern solntis, 

 postice planatis, antice expansis ; basi rotundata seu angulata ; 

 apertura subovata ; labro postice porrecto ; labio sgepe parietem vix 

 attingente ; columella intus recta, extus valde lacunata. Long. '6, 

 long. Sjiir. '16, lat. •\7, div. 50°. 

 Hab. Neeah Bay (Swaji). 

 Painted like L. decurata, A. Ad., which differs in having a 



normal growth, with very slit;;ht clunk. 



240 



