On the Madreporarian Oeniis Turbinaria. 499 



supposed aquatic habits of Fnsopus see Ann. & Mag, Nat. 

 Hist. 1866, xviii. p. 265. 



3. In the 'Zoologist' for 1860, p. 7141, MacGillivray 

 described an insect from Aneiteum, New Hebrides, under the 

 name of Pnsopus CarloUce. There is an insect in the Museum 

 bearing this name from Aneiteum, which appears to be cor- 

 rectly named, but it has five lamelliforra plates at the sides of 

 the metathorax, as in Cotylosoma) the posterior one, how- 

 ever, is not visible from above, so that MacGillivray may 

 have overlooked this when he gave the number as four. 

 Coiylosoma is evidently very closely allied to MacGillivray's 

 insect, which ought not to be placed in the American genus 

 Prisopus. 



4. Cotylosoma is from Taviuni, Fiji Islands ; not Borneo, 

 as stated in Wood-Mason's remarks. 



It is not my purpose to characterize Cotylosoma dipneusti- 

 cum ; in fact it scarcely needs more than the figure. 



LX. — Notes, Morphological and Systematic^ on the Madre- 

 porarian Genus Turbinaria. By H. M. Bernard, M.A. 

 Cantab., F.L.S., F.Z.S. 



[Plates XIX. & XX.] 



Having been engaged for the last eight months in studying 

 and arranging the Turbinarians in the Natural History 

 Museum, I propose to give a short abstract of some of the 

 more intei'esting results obtained. 



The task has been one of very great difficulty, and I am 

 deeply indebted to the constant consideration and sympathetic 

 advice accorded tome during my work by Dr. Giinther, F.R.S., 

 to whose kindness I owe my access to the specimens in the 

 collection ; without such encouragement I should hardly have 

 had the fortitude to proceed, in face of the apparent impossi- 

 bility of ever being able to arrive at a satisfactory system of 

 classification. The nature of some of these difficulties I 

 propose now to describe. I take this opportunity also of 

 thanking Prof. Jeffrey Bell, who has the more immediate 

 charge of the corals in the National Collection, for much 

 assistance, advice, and friendly criticism, which has often 

 been of great value to me. 



Without going into the history of the genus, I may briefly 

 say that the Turbinarians, according to the classification of 

 Milne-Edwards in ' Les Coralliaires ' (which classification 



