72 SYKES : TERRESTRIAL MOLLUSAN FAUNA. 



It is worth while, too, remarking that the Helix anlacospira, 

 PfeifFer (1846), is, from an examination of the type, spscifically 

 identical with the Helix muUisnlcata of Gassies (1857). This 

 fact does not appear to have come to the notice of Mons. Crosse. 

 Judging from figures and descriptions, as also from specimens in 

 this country, it would appear also that H. luteolina, Gassies = 

 H. d'pl.i:i:li:si, and is another synonym of H . anlacospira. 



One would have inclined, also, to place H.yahou:nsis, Gassies 

 as a synonym of H. viuUisnlcata ( = H. aulacospira) . Again, from 

 an examination of the type of Helix hisnlcata, PfeifFer (1853), 

 described as from Tasmania, it is clear that this species is 

 identical with the H. hcvaudi, Gassies (1858). Some doubt must 

 be felt, too, as to whether Mons. Crosse is correct in separating 

 Rhytida coguiensis, Crosse, and R. paulncciae, Crosse, from R. 

 testiidinayia, Gassies. 



The H. pinicola of Gassies, Layard, &c., is not the H. 

 pinicola oi Pie'\ffer. The type of this latter species (Mus. Cuming) 

 is labelled as from the "I. of Pines" and probably does not 

 really come from New Caledonia. It appears to me that the 

 H. pinicola of Gassies is a synonym of the H. costulifcra, PfeifFer. 



Referring to the Platystoina, Ancey, which Mons. Crosse 

 quite correctly replaces by Platyrhytida, Cockerel!, it may be 

 pointed out that, in addition to the use of the name by 

 Klein, Platystoma has been used by Meigen (1803, Dipteya), 

 Agassiz (1829, Pisces), Swainson (1837, Aves), while Conrad 

 used Platyostoma in 1842. 



Mons. Crosse is thoroughly to be commended for having 

 (p. 223) united H. iurneyi, H. astiir, and H. occlnsa into one species ; 

 the last two being only toothless forms of the former; they are 

 correctly placed under Platyrhytida. 



Mons. Crosse appears to have overlooked the fact, to which 

 Mons. Ancey called attention in 1888, that when Helix hevlierei 

 was described there was also a Helix herlieri, Morelet, which took 

 precedence. Though, of course, these two now are placed in 

 different genera, still there were at one time two species in the 

 same genus of the same name, and the rule of priority was 

 violated. 



Mons. Crosse also appears to be in ignorance of a paper by 

 Dr. Boettger f in which the species of Pupa from New Caledonia 

 were discussed ; a new group, Cylindyovertilla, was proposed for 



t In von. Martens, Conch. Mitth., 1880, vol. i., pp. 45-72, taf., x,-xii. 



