BY H. LEIGHTON KESTEVEN. 



47^ 



spengleri, Chemnitz, has rightly been maintained a good species 

 by Smith (32). Its affinities are with L. labiosum. 



"Triton speciosus," Angas. 



(Text fig. 3.) 



This species is, as Tryon suspected, 

 a Troplion. I give figures of its oper- 

 culum and dentition. 



LOTORIUM CLANDESTINUM, Chcmn. 



This species would be best trans- 

 ferred to Apollon. 



LoTORiUM cosTATUM, Born. 

 The complicated synonymy of this 

 species is dealt with at length by 

 Watson (39). Some of the synonyms 



Fig. 3. 

 Tritoniiim speciosum, Angas. 



might advantageously be retained for varieties. 



LOTORIUM NODOCOSTATUM, Tate ife May. 



(Text fig. 4.) 



From the material above referred to I have 

 drawn the accompanying sketch. From this 

 it will be seen that New South Wales specimens 

 'f/^ have a longer canal than the southern form, 

 unless the description and figure of the species 

 were drawn from a mutilated specimen. The 

 co-type lent me by Mr. May has the canal 

 broken short oif, and is, therefore, of no 

 assistance on this point. 



The length of canal w^ould seem to exclude 

 the species from the group in which I have 

 placed it, but the tout ensemble is that of this group. 



Fig. 4. 



L. nodocostatum, 

 Tate & May. 



