1896.] BORNEO AND NEIGHBOURING ISLANDS. 109 



This species somewhat resembles E. ac/laja, but is somewhat 

 smaller, has a flatter spire, a deeper suture, and, for its size, more 

 numerous whorls. 



24. EvEEETTiA THALIA. (Plate III. fig. 5.) 



Testa depresse conoidea, suhorbiculans, aordide pellucida, ejiidermide 

 olivacea induta, imperforata ; spira hrevis, cmivexe conoidea, ad 

 apicem ohtusa ; anfractus 6-7, conve.vhisculi, lente accrescentes, 

 s^qjerne fortissime arcuatim et ohU<iue striati, hand nitidi, 

 rdiirrms ad peripheriam subangidatus {angulo apert%iram verstis 

 seiisim evaiiescente) , infra convexiuscidus, aliqnanto hevigatus, 

 lineis incrementi tenuihus stnatus, in medio panic impressus ; 

 apertura oblique lunata ; peristoma temte, maryine columellari 

 superiie leviter incrassato, rejlexo, appresso. 

 Diam. maj. 19 millim., min. 17^, alt. 13. 

 Hab. Mount Rabong. 



This species is at once distinguishable by the strong curved 

 oblique raised lines of growth upon the upper surface, and the 

 imperforate impressed base which is somewhat glossy, whereas the 

 spire is more or less dull. Aylaia, the name of one of the three 

 Graces and daughter of Jupiter and Antonoe, having been associated 

 by Pfeiffer with a species of this genus, it seemed suitable to make 

 use of her sister's name Thalia in connection with an allied form. 



25. EvEEETTiA CTTTTEEi (H. Adams). 



MacroMamys cutteri, H. Ad. Proc. Zool. See. 1870, p. 794, 

 pi. xlviii. fig. 21. 



Hab. Busau (H. Adams 6f Everett), 



The locality Busau is printed erroneously Busan by H. Adams 

 and Godwin-Austen, P. Z. S. 1889, pp. 334-355, 1891, pp. 37-46, 

 and therefore for busanensis, the term applied to several species, 

 busauensis should be substituted. 



26. Lampeoctstis myops (Dohrn & Semper). 



Lam. chlororhaphe. Smith, Ann. & Mag. 1893, vol. xi. p. 348, 

 pi. xviii. figs. 4-6. 



Hab. Tiga Island, near Labuan. 



This species appears to be widely disti-ibuted, having been 

 recorded from Mindanao, Sulu Islands, Palawan, and Balabac. 

 The specimens described from Palawan as Lamprocystis chloro- 

 rhaphe undoubtedly belong to this species. 



27. Lampeoctstis balabacensis. (Plate III. fig. 6.) 



Testa depressa, orbicidaris, anguste perforata, polita, cornea, sub- 

 pellucida ; spira vix prominula, ad apicem, obtusa ; anfractus 

 4^, convexiusculi, lente accrescentes, Iceves, infra suturam tenuiter 

 plicccto-striati, idtimus ad peripheriam rotundatus ; apertura 

 oblique lunata ; peristoma tenue, margine columellari superne 

 breviter dilatato, rejlexo, et peculiariter sinuato, porca parva in 

 umbilico instructo. 



