568 A TROCHUS FROM PORT JACKSOX, ETC., 



Now as the specific name comptus^ has ah-eady been bestowed 

 upon a species of Calliostoma described by Philippi under the 

 genus Trochvs about the year 1849, it follows that the Z. complus 

 of Adams must receive a new specific name. Hence I would 

 suggest that this species be hereafter known as Trochus (Callio- 

 stoma J Adamsi, Brazier. I am indebted to my kinsman Mr. R. 

 C. Rossiter of Noumea, New Caledonia, for sending me a typical 

 specimen of Trochus (Calliostoma) Poupineli, Montrouzier, from 

 Isle Nou, New Caledonia, which has enabled me to compare the 

 species under notice. 



Trochus (Calliostoma) Adamsi, Brazier. 



Ziziphiims comjHus, A. Adams, Proc. Zool. 8oc. p. 38, No. 4, 

 1854; Reeve, Conch. Icon. Vol. xiv. pi. vii. fig. 48, 1863; Angas, 

 " Additional Species of Marine Mollusca to be included in the 

 Fauna of Port Jackson," Proc. Zool. Soc. p. 96, No. 73, 1871 ; 

 Trochus Poupineli, Fischer (non Montrouzier), Journ. de Conch, 

 p. 210, 1878. 



Shell imperforate, acutely conical, rather thick; apex blackish- 

 purple, granulated; whorls seven, flat, white or brownish; first 

 two whorls with three rows of spiral gr9,nose cinguli, next with 

 five the intermediate ones being finer, next two with six those 

 above and below the canaliculated suture being the largest, last 

 whorl with seven terminating at the periphery with two rows of 

 the cinguli spotted with reddish-brown the intermediate ones 

 white; last whorl slightly rounded; base convex and lirate with 

 nine lirse brown-spotted; aperture orbicularly quadrate, sulcate 

 and nacreous within, having four elongated sulci, two on the base 

 and two on the wall of the last whorl; lip thin at the edge, 

 thickened internally; basal margin crenulated; columella pearly 

 white, subhorizontal, arcuate, subtruncate at the base, obtusely 

 denticulated. 



* Since this paper was read. I have received a letter (10, xi. 1894) from 

 Mr. Edgar A. Smith pointait; out that Adams' specific name comptns must 

 stand, as the species was descrilied in 1854, wheitas T. comptns, Philippi, 

 was published iu Lieferung 144 ot the Conchylieu Cab., issued in 185o, one 

 year later. I concur in Mr. Smith's views. 



