314 PROCEEDINGS OF THE ACADEMY OF [Nov., 



Mitra ostergaardi n. sp. PI. XII, fig. 22. 



The shell is fusiform with conic spire somewhat flattened peri- 

 phery, somewhat convexly tapering base, slightly concave below; 

 ochraceous -buff to nearly as dark as ochraceous-orange, the spire 

 usually a little paler. Sculpture of widely-spaced spiral series of 

 small punctures, six on the back of penult whorl, the intervals very 

 minutely, superficially striate spirally; towards the base having 

 punctured spiral grooves. Under the suture the whorls are a little 

 prominent and finely, irregularly crenulate. 



The aperture is flesh-tinted within ; narrow, but slightly wider be- 

 low; lip contracted above. Five plaits. 



Length 43, diameter 15, length aperture 22.3 mm. (summit broken). 



Honolulu Harbor, in the dredger dump. J. M. Ostergaard. 



The color is altered, as in nearly all shells from the "dump," in 

 life it will be found to be much darker in color. It is closely related 

 to M. thaarnmiiana, but the last whorl is decidedly more cylindric, 

 and there are fewer spiral puncture lines. 



Two of the three specimens show a very faint pale line at the 

 shoulder. Some young shells which are perhaps this species 

 have a distinct whitish line at the shoulder. They have 4 colum- 

 ellar plaits. 



Mitra coronata aurora Dolu-n. 



Faded specimens are found in the dump of the Honolulu Harbor 

 dredge. Also taken alive in 150-300 feet off Waikiki by D. B. 

 Langford. Mr. Thaanum collected beautiful living ones at Keekea, 

 Hilo, Hawaii. 



Mitra lugubris Swains. 



Honolulu Harbor; off Waikiki, 35-50 fms. 

 Mitra lugubris honoluluensis n. pub.sp. PI. XII, fig. ifl. 



Similar to M. lugubris in the deep punctures and longitudina' 

 wrinkles, but having small, white subsutural tubtn'cles and a narrow 

 white band a short distance below the suture. 



Length 23, diameter 9.7 mm. 



Honolulu Harbor. 



Mitra (Strigatella) ticaonica vagans n. subsp. PI. XI 1, figs. 14, 15. 



The shell is oblong, solid. Chestnut-brown. Spire short, with 

 sculpture of five impressed spiral lines. Last whorl smooth except 

 at the base, where there are about 10 spiral furrows. 



