1891. | BAKER—ON NEW SPECIES OF MURICID&. 133 
Murex BREVFIRONS, Lam. Anim. Sans. Vert. IX, p. 573, 
Synonyms : 
Calcitrapa, Lam. Anim. Sans Vert., IX, p. 573. 
Crasstvaricosus, Reeve. Zool. Proc., 1845. p. 86. ° 
Llongatus, Reeve. (non Lam.) Conch. Icon. 
Purpuratus, Reeve. Conch. Icon., sp. 183. 
Approximatus, Sowb. Thes. Conch., 13 f. 62, 1879. 
Description of New Species. 
During the past six months I have had occasion to examine and 
study a large number of species and specimens of the AZuricide, and 
among them I found four which appeared new to science. Of these, 
two may eventually prove merely varieties of nearly allied forms, but at 
present the paucity of material fully warrants their description as 
novelties. The types are in my private collection of Muricide. 
Murex (CHICOREUS) BITUBERCULATUS, sp. nov. Pl. 11, Fig. 4. 
Shell oblong, ovate, rather thin, chocolate colored ; whorls eight, 
crossed by three longitudinal varices on each whorl with two inter- 
varical nodes between each varix ; spire acute, pyramidal, about half 
the length of the entire shell ; sutures distinct, slightly impressed ; the 
body whorl is crossed by nine coarse spiral lines with a finer line 
between; on the canal these lines are all of the same size; the whorls 
are gracefully rounded and stand out upon the surface of the shell in 
great prominence ; the surface is further ornamented by extremely fine 
longitudinal lines, which intersects the spiral lines giving rise to small 
nodules at their intersection; on the varices the spiral lines are 
raised into heavy, erect lines, giving the varix a crenulated aspect ; 
aperture a long oval ending below in a wide canal ; collumella arcuate, 
smooth and partly covered by a thin callous; outer lip thickened by 
the varix, crenulate upon its edge; canal moderate, wide, open 
nearly straight ; umbilicus closed; color light chocolate, the nodes 
darker and the lire lighter than the body of the shell; apical whorls 
two in number, smooth and hyaline. 
Alt. 34, diam. 18 mill. Aperture (excluding canal) alt. 12, diam. 
8 mill. Habitat: Australia. 
This species has long been a puzzle to me and it remained in my 
collection unnamed for a long time. I finally had an opportunity of 
comparing it with a large collection, and with all the published descrip- 
tions of the members of the Chicoreus group, and was convinced, after 
a careful study, that it was an undescribed species. 
zo, Proc. Rocn. Acapb. oF Sci., VoL. 1, AUGUST, 1891. 
