CLASS GASTROPODA 
71 
ratim decussatis, lirulis radiantibus acutissimis; anfr. labro a carinis pec- 
tinato; labio parietem parum attingente, medio calloso; umbilico angusto. 
Long., 18; long, spir., 13; lat., 19 poll. (Carpenter.) 
Umbilicated, spirally lirate, the lirae acute, distant, about 9 on the body 
whorl, the wider interspaces with closer longitudinal sculpture; light yel¬ 
lowish brown, epidermis shaggy. Length, 5-6 mm. (Tryon.) 
Type in United States National Museum. Type locality, Neah Bay, 
Washington. 
Range. Vancouver Island, British Columbia, to Lower California. 
Described as Isapis. 
Iselica obtusa Carpenter, 1864 
Supplementary Report, British Association for the Advancement of Science, 656. Pro - 
ceedings of the California Academy of Sciences, 3:217. 
I.t. I. fenestrcita indole simili, sed magis elongata, subnitente, pallide 
rosacea; vertice nucleoso decliviter immerso, celato; anfr. norm, postice 
subplanatis, suturis obtusis; costis tumentibus rotundatis circ. vii., suturas 
et umbilicum minorem versus obsoletis, plus minusve extantibus; inter- 
stitiis parvis, irregularibus, baud decussatis; peritremati continuo, labro 
tenui, secundum costas variantes undulato; labio medio calloso. Long., 
0.23; long, spir., 0.09; lat., 0.16 poll. (Carpenter.) 
Narrower, whorls less convex, less sharply costate than F. fenestrata; 
whorls flattened behind, ribs swollen, uneven. (Tryon, Manual of Con¬ 
cho logy.) 
Type in State Collection, No. 682. Type locality, San Diego, Cali¬ 
fornia, in 10 fathoms. 
Range. Monterey to San Diego, California. 
Iselica obtusa laxa Dali, 1919 
Proceedings of the United States National Museum, 56:351. 
Shell much resembling obtusa, but having a longer and more acute 
spire, much feebler spiral sculpture, and the whorls more laxly coiled, 
giving the suture a well-marked channel in adults. The color is grayish 
white, with a yellowish dehiscent periostracum, and the umbilicus is a 
narrow chink, partly covered by the reflected inner lip. Height, of shell, 
8.5 ; of last whorl, 6.5 ; diameter, 5 mm. (Dali.) 
Type in United States National Museum, No. 219754. Type locality, 
Maple Bay, Vancouver Island, British Columbia. 
Range. Vancouver Island, British Columbia, to Puget Sound, Wash¬ 
ington. 
[673 ] 
