EXPEDITION TO SOKOTRA: NEW SPECIES. 11 
under surface of the primaries differs conspicuously in having a large sub- 
quadrate black patch situated between the costal band and the black band 
crossing the middle of the wing ; the patch commences about the middle of 
the sub-median nervule and extends to the anterior angle of the discoidal 
cell. Expanse, 0°9 inch. 
Female :—Most like the female of the South African form of 7. 
theophrastus, but the row of spots along the hind margin of the secondaries 
is more widely edged with white; under surface like that of the male. 
Expanse, 0°75 inch. 
Habitat. Sokotra. 


V. Diagnoses of the New Species of Landshells. 
By Epcar A. SMITH. 
(1) Buliminus (Ovella) homhilensis. 
Testa ovata, anguste perforata, oblique tenuiter conferteque costulata, 
sordide albida vel grisea, nigro-fusco strigata, strigis in anfractu ultimo ad 
medium interruptis, infra pallide fusco irregulariter lineata et punctulata ; 
anfractus 7 leviter convexi, sutura vix obliqua sejuncti, superiores duo 
pellucidi, leves, nitentes, ultimus antice subascendens ; apertura inverse auri- 
formis, fusca, longit. totius } sepe superans; labrum apertura pallidior, 
anguste expansum ; columella superne dilatata, alba, fusco tincta, intus sub- 
dentata vel plicata. Var. testa omnino albida, hic illic fusco punctata, apertura 
fusca. Longit., 194 millim. ; diam., 11. Apertura, 10} longa, 6 lata. 
Habitat. Hombil, 1500-2500 feet, and Dimichiro Valley, Sokotra. 
Allied to B. ricbechi, Martens, but shorter, more ovate, with a less pro- 
duced spire and a wider and differently shaped mouth. 
(2) Buliminus (Ovella) dahamisensis. 
Testa B. homhilensi similis, sed diverse colorata, albida vel grisea, strigis obli- 
quis saturate fuscis (in anfractibus penult. et antepenult. interdum fere nigris) 
ornata. Longit., 184 millim.; diam., 103. Apertura, 10 longa, 53 lata. 
Habitat. Hadibu Plain, Adho Dimellus, 3500-4500 feet, and Dahamis, 
350-1000 feet, Sokotra. 
In form and sculpture this species resembles B. hombilensis and differs only 
in colour. Having seen a good series of both, it seems to me advisable to 
consider them distinct species. Some examples of the present species exhibit 
very little painting on the body-whorl, which is of an uniform greyish tint, 
but have the two preceding whorls more or less obliquely striped. Those 
specimens in which the markings are very faint are very like the pale variety 
of homhilensis. 
(3) Buliminus (Ovella) levior. 
Testa perforata, ovata, alba, fusco strigata, strigis longitudinalibus in 
anfractu ultimo ad medium interruptis, infra lineis obliquis angustioribus 
fuscis ornata, fere levis, lineis incrementi obliquis striata ; anfractus 6-7 
convexiusculi, duo apicales pellucidi, ultimus subascendens ; apertura inverse 
auriformis, intus fusca ; labrum albidum, haud expansum, albidum ; columella 
alba, macula fusca notata, dilatata, reflexa, plicato-dentata. Longit., 14 
millim. ; diam. 92. Apertura, 9 longa, 4 lata. 
Habitat. Jena-agahan, 1200-2500 feet, Sokotra. 
Differing from allied species such as B. dahamisensis, homhilensis, and 
socotorensis in the absence of distinct costulate sculpture, the surface being 
almost smooth. 
