330 MALACOZOA. GASTEROPODA. PECTINIBRANCHIATA. 



Found by me among shell sand, from Ugie-mouth, collected 

 by Mr. Alexander Murray, in December, 1842. 



Turbo insculptus. Mont. Test. Brit. 324. PI. 12. f. 10. Odos- 

 tomia insculpta. Flem. Brit. Anim. 310. 



FAMILY VII. FUSINA. P. 62, 167. 

 GENUS 5. TRICHOTROPIS. 



Shell ovato -fusiform, with the spire pointed ; the 

 aperture ovate, with a short, oblique, narrow canal, the 

 outer lip thin, denticulate, the inner reflexed, but leaving 

 exposed a rather large umbilical groove. Intermediate 

 between Fusus and Rostellaria. 



1 . Trichdtropis umbilicdta. Umbilicated Trichotropis. 



Shell ovato-turrite, of seven convex, spirally-ribbed 

 turns, the last very large, the spire abruptly tapering to 

 a small point, the aperture subovate, with the canal very 

 short, the inner lip reflexed, but leaving a distinct um- 

 bilicus, the outer very convex and dentated by the spiral 

 ribs. Umbilicdtus, perforated. 



Shell ovato-turrite, of seven convex turns, which are ob- 

 liquely flattened above, spirally ribbed, and transversely marked 

 with fine but deeply impressed striae ; the last turn very large, 

 ventricose, with six or seven strong, compressed, rounded 

 spiral ribs, of which only two appear on the upper turns ; 

 between each pair of these ribs a smaller, and in the flat- 

 tened sloping space between the uppermost rib and the 

 suture three small ribs ; the whole surface beautifully and 

 regularly marked with fine deeply impressed oblique striae ; 

 the suture deep ; the spire slender, and tapering to a small 

 point ; the aperture ovate, broader behind, the outer lip cre- 

 nated by the ribs, the canal v^ry small and oblique, the inner 

 lip reflexed, but not concealing the umbilicus, from which a 

 groove extends nearly to the canal; the colour white, or red- 

 dish-white. Length seven-twelfths of an inch, breadth four- 

 twelfths. 



This species, of which I have before me four specimens, the 

 most perfect found by myself in January, 1843 ; the rest by 

 Mr. Alex. Davidson, in February and December of the pre- 

 vious year, is undoubtedly the same as that described at pp. 



