1920.] 



NATURAL SCIENCES OF PHILADELPHIA. 



369 



Haminoea aperta oahuensis Pils. 



Oahu: IJ^ miles east of Kahuku, Pilsbry. Additional specimens 

 from Oahu are somewhat larger, up to 17 mm. long. They are 

 strongly malleate or faceted around the middle. 



In the section Haloa, containing the foregoing species, the colum- 

 ella resembles that of Bullaria or Aliculastrum. 



Haminoea curta (A. Ad.) Figixre 8a. 



Bulla curta A. Adams, Thesaurus Conchyliorum II, p. 582, pi. 124, fig. 100. 

 Pilsbry, Man. Conch. XV, p. 368. 



This species was described without locality. Specimens from 

 Fiji collected by Andrew Garrett agree with the original figure. I 

 refer to this species provisionally two smaller, perhaps immature,, 

 examples from Kaneohe Bay, Oahu, one of them figured. It meas- 

 ures, length 7, diameter 3.5 mm. The straighter lateral outlines 

 separate this from H. olopana. It has the same sculpture as H. 

 olopana, fine, clearly engraved spiral lines of which I count about 

 36. 



H. curta was first reported from the Sandwich Islands by von 

 Martens.* Cooke united as synonyms certain Red Sea forms, 

 whether correctly or not remains to be seen. 



The original figure of H. curta measures, length 14.3, diameter 

 7.5 mm. One from Fiji measures, 12.3, diameter 6.3 mm. The 

 summit is very minutely perforate, and the lateral outlines are a 

 trifle straighter than in the Kaneohe Bay form figured. 



Fig. 8. — a, Haminwa curia A. Ad. h, H. olopana n. sp. 



Haminoea olopana n. sp. Figure 8b. 



The shell approaches a cylindric form, but the outlines are notice- 

 ably convex. It is thin, translucent whitish with opaque white 

 terminations. Surface scored by fine spiral lines of which I count 

 26 just behind the outer lip. There are additional closer ones in 



* Donum Bismarckianum, p. 53. 



