243 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol, VIII. 
SIPHONARIA BASSEINENSIS, sp. nov. (PI. 1, f. 21). 
S. testé subconicd, oblonga, tenut, levi, nigrobrunned, biradiatd, intus 
brunned, ad marginem radiata. 
Long. 9 mill. (sp. majoris). 
Tats Gay oe 
Hab. Bombay (Abercrombie). 
A small subconical plain smoothish brown species, with biradiate 
flames round the margin. I had thought this, of which very 
numerous examples occur in Mr. Abercrombie’s collections, must be a 
young form of some perhaps well-known species, but I am assured this 
is not the case, Mr. Abercrombie having had unusual facilities for 
studying the growth of the species, so very abundant all round the 
Bassein and Mahim coasts. Mr, Edgar Smith also concurs in this 
view, that it is a mature species, and different from the many already 
described, though it presents no very important salient features. 
RATA ABERCROMBIEI, sp. nov. (Pl. 1, f. 25). 
A. testé pertenut, hyalind, lacted, oblongo-ovatd, postice rostrata, 
antice ovata, gibbosuld, concentrice confertim undatoplicatd, tumescente, 
cordatad, wmbonibus parvis. 
Long. 23 mill. 
fiat. 30. ,, ‘) 
Hab. Bombay (Abercrombie). 
A most beautiful, delicate, white papyraceous shell, concentrically 
closely wave-ribbed, belonging to a small genus which I do not find 
has hitherto been recorded from the shores of Hindostan, though a 
nearly allied species, &. graye (A. Adams), is reported from Borneo. 
From this shell A. abercrombie: differs in its more close and regular 
transverse plications, and the greater delicacy of the shell. It would 
be interesting if, in years to come, an intermediate form between the 
two were discovered on either the Eastern coast of India, or in the 
Malay Peninsula ; it is more than likely other species of this genus, 
hitherto so restricted, will reward the collector. The type, &. canali- 
culata (Gray), is extremely common on the sandy sea coasts of South 
Carolina, and another larger and coarser species, 2. californica (Sowb.), 
is an inhabitant of the Western coasts of the United States. A. pul- 
chella (Ad. and Reeve), a very small and delicate form, occurs in the 
