Baker — Critical Notes on the Muricidae. 375 



or three. Whorls 8 to 9, separated by profound sutures, -the 

 last, including canal, more than double the length of spire; 

 lip crenate, sulcate within; columella rugose-plicate; throat 

 milky white, entirely smooth ; canal elongated, nearly straight, 

 a little ascending, the channel narrowly open. Alt. 95 mm." 

 It is from the Island of Flores. The species is related to the 

 tribulus group. 



MUREX ACANTHOSTREPHES WatSOU. 



Murex acanthostrephes, Watson, Journ. Linn. Soc, London, p. 596, 1883; 



Challenger Report, Gastropoda, p. 149, pi. x, tig. 2, E. A. Smith, 



Zool. Voy. H. M. S. Alert, p. 143, pi. v, fig. B. 

 This appears to be a very distinct species, and I am not able 

 to refer it to any described form. It differs from adunco- 

 spinosus, Beck, in the spines standing out much more from the 

 axis, and the earlier whorls being ornamented with a double 

 row of hollow squamous spines; from ternispina, Lam., it 

 differs in possessing a double row of hollow spines; from 

 tribulus, Linne, it differs in having longer, more numerous 

 spines, and in the general form of the apex; and from Ca- 

 britii, Bernardi, it differs in being longer, thinner, and with 

 longer, weaker spines. It is a species which will at once be 

 recognized when seen. The original specimens were from 

 west of Cape York, off S. W. point of Papua, in 28 fathoms, 

 in green mud. 



Murex Martinianus Reeve. 



Murex Martinianus, Reeve, Proc. Zool. Soc, p. 88, 1845; Conch. Icon., 

 Murex, sp. 72. 



This species has no affinity with ternispina, Lam., as many 

 authors have supposed. Many hundred specimens of both 

 of these species have passed through my hands, and I have 

 thus far failed to notice a specimen connecting them. The 

 present species has a longer shell with shorter and more nu- 

 merous spines. In ternispina there are eight well-developed 

 spiral ribs and no longitudinal costae, while in the present 

 species there are three, sometimes four, heavy longitudinal 

 costae, and about fourteen light spiral lines. In Martinianus 

 there is a strong tooth at the base of the outer lip, which is 

 absent in ternispina. The apices are quite different, the 



