On a new Species of Land-Shell from Colombia, 557 
hyaline spot in the marginal cell and a hyaline line on either 
side of the second transverse cubital nervure. 
6. Similar, more slender; the abdomen narrower; the 
antenne, the space round the ocelli, and a spot on the lateral 
margins of the second to sixth abdominal segments black ; 
the wings with the fuscous cloud around the basal nervure 
extending further towards the apex of the wing. 
?. Length 13 millim. to apex of abdomen; ovipositor 
5 millim.; expanse 21 millim. 
3. Length 12 millim.; expanse 19 millim. 
LX XI.—Deseription of a new Species of Land-Shell from 
Colombia. By 8S. I. pa Costa. 
Labyrinthus colombiensis, sp. n. 
Testa imperforata, orbicularis, globoso-conoidea, solida, rufo-fusea, 
lineis obliquis, curvatis striata; spira depressa, ad apicem obtusa; 
anfractus 54, convexiusculi, ultimus ad peripheriam obtuse 
carinatus, antice descendens: apertura horizontalis, transverse 
auriformis; peristoma contractum, continuum, album, breviter 
reflexum, sinuosum ; pone labrum biscrobiculatum, marginibus 
eallo alto prominente, laminam erectam intrantem emittente 
junctis, supero arcuato, basale flexuoso, intus tuberculis duobus, 
dente altero brevi, altero obtuso majore, dextro inequaliter 
bidentato. 
Alto 21; diam. maj. 34 mm., min. 30 mm. 
Hab. Santa Marta, Colombia, South America. 
This species differs in many respects from others of this 
group, which are almost invariably deeply umbilicate, flat, and 
sharply carinate. L. Sievers’, Marten, both in form and the 
armature of the aperture bears a strong resemblance to this 
