THE NAUTILUS. 81 



people they are called " sand dollars." I was greatly puzzled over 

 them till this summer when I learned, at the Conchology Class of 

 the Chautanqua Assembly what they were. They are the egg cases 

 of the Natica and are full of microscopic eggs mixed with the sand. 

 Sometimes on top of the egg cases are found the eggs of the Nassa 

 lying in long rows. 



NOTICES OF NEW PUBLICATIONS. 



ON THE STRUCTURE AND AFFINITIES OF SOME NEW SPECIES OF 



MOLLUSCS FROM BORNEO. By W. E. Collingeand H. H. Godwin- 

 Austen, P. Z. S., 1895. This interesting paper gives descriptions 

 and many figures of three new slugs collected by Mr. Everett in 

 Borneo. The fact is brought out, that the slugs of Borneo resem- 

 ble in their anatomy some of the shell-bearing forms of that island, 

 rather than the Indian slugs to which they show more outward 

 similarity. The first species is placed in Damayanlia Issel, for all 

 that it has a shell. The suggestion that Issel was mistaken in sup- 

 posing that his genus was shell-less is probably correct ; the present 

 writer had in Ann. Mag. N. H., Jan., 1891, p. 100, suggested a doubt 

 as to the validity of this character by quoting it within inverted 

 commas. Some remarks are given as to Tennentia, which is said to 

 be " probably synonymous with Issel's genus," but immediately be- 

 low is correctly shown to be equivalent to Mariaella. It is probable 

 that the authors meant to say that the so-called Tennentia philip- 

 pinensis is a Damayanlia, but not that Tenitentia=MariaellaiB Dam- 

 ayantia ! If the latter synonymy held, Muriaella would of course be 

 the name of the genus, having long priority. The statement that 

 Dekhania G.-A. is the same as Mariaella and " must be suppressed " 

 conies rather late in the day, since the present writer had suppressed 

 it, with all due pomp and solemnity, in 1891 (t. c., p. 103-104), 

 and again in the check-list of 1893. The other two species are 

 placed in Mieroparmarion, a genus or subgenus lately instituted by 

 Simroth for a species from Java. Curiously, in making comparisons, 

 Africarion pal/ens is said to be from South India, whereas it was really 

 from Abyssinia, vide Godwin-Austen, Moll, of India, 1883. 



Simroth's division of the Javan slugs into Purmarion and Micro- 

 parmarion may be justified, but a new name is apparently required 



