3o8 , ■ 



Stat. 86. Dongala, Palos-bay, Celebes. 36 M. Fine grey mud (river mud), i Spec. 



Stat. 129. Kawio- and Kamboling-islands, Karkaralong-group. Reef, i Spec. 



Stat. 250. Kilsuin, West coast of Kur-island. Reef, i Spec. 



Stat. 296. Noimini, South coast of Timor. Reef, i Spec. 



Stat. 322. 1^2 riiile south of Tandjong Lajar, South coast of Bawean-island. 32 M. Coral, i Spec. 



The operculum has a basal nucleus, it is beautifully coloured, yellowish-orange, with a 

 black streak running from the nucleus to the opposite border. 



The radula has the teeth in about 90 rows ; the median tooth (M) has a slightly curved 

 base, with concave anterior and convex posterior margin, with 5 rather long denticles and one 

 very small one on each side, making 7 in all; the laterals (i) are tricuspidate, the distal cusp is 

 by far the longest, the median one is small but distinct. This radula only moderately agrees 

 with that of E. inendicaria, which according to Troschel (Gebiss der Schnecken, Vol. II pi. 8, 

 fig. 4), has a tricuspidate, median tooth, with very small cusps in the interstices and on the side, and 

 bicuspidate laterals. However the radula is by no means Columbelloid. (See sub E. mendicaria). 



4. Engina trifasciata Reeve. 



Reeve. Conch. Ic. Vol. Ill, Ricinula, fig. 41. 



TryON. Man. of Conch. Vol. V, p. 189, PI. 61, fig. 20 [alveolata var.). 



Stat. 34. Labuan Pandan, Lornbok. Coralreef. i Spec. 



Stat. 81. Pulu Sebangkatan, Borneo-bank. Reef, i Spec. 



Stat. 225. Near South point of South Lucipara-island. Reef, i Spec. 



Stat. 279. Ruma-Kuda-bay, Roma-island. Reef, i Spec. 



Tryon (1. c.) says of this species: "a scarcely distinguishable variety, in which the 

 decussation is not so strongly marked as in the typical forms". I think, after comparing many 

 specimens with the former species, which Tryon thinks to be a synonym of alveolata, that it 

 may be recognized without much difficulty. 



5. Engina lineata Reeve. 



Reeve. Conch. Ic. Vol. Ill, Ricinula, fig. 51. 



Tryon. Man. of Conch. Vol. V, p. 194, PI. 62, fig. 50. 



Stat. 142. Laiwui, coast of Obi Major. Reef, i Spec. 



6. Engina zonata Reeve. 



Reeve. Conch. Ic. Vol. Ill, Ricinula, fig. 33. 



Tryon. Man. of Conch. Vol. V, p. 194, PI. 6^, fig. 52. 



Stat. 240. Banda. Reef. 2 Spec. 



The specimen is very young and in no very good condition, but agrees with the upper 

 whorls of specimens in my collection, formerly named by Mr. E. A. Smith. Though Reeve 

 records it only from the Gallapagos Is., this may be an error, at least Hidalgo records it from 

 the Philippines. 



62 



