328 Rev. T. R. R. Stebbing on some Enigmatical 



Buckton's type of P. spinula is founded on a mutilated 

 specimen. 



Centrochares rid?eyanus } sp. n. 



Cinnamon-brown ; tibiae and tarsi ochraceous ; pronotal 

 lateral angles longly, obliquely, forwardly and a little upwardly 

 produced, their margins serrate, their disks finely tuberculate, 

 their apices broadened and spatulate, externally truncate ; 

 disk of pronotum percurrently carinate and serrate, as is also 

 the frontal lateral margins, posterior pronotal process conically 

 upwardly produced near base, its margins longly serrate, 

 more broadly and upwardly produced near apex, with its 

 margins also longly serrate. 



Long. 4 mm. 



Hab. Malay Peninsula ; Singapore (H. N. Ridley). 



Allied to C. horrificus, Westw., from which it differs by 

 its smaller size, the narrower and more erect subapical lobe 

 to the posterior pronotal process, &c. 



Genus Micreune. 

 Micreune, Walk. Journ. Linn. Soc. Lond., Zool. i. p. 94 (1856). 



Micreune formidanda. 



Micreune formidanda, Walk. Journ. Linn. Soc. Lond., Zool. i. p. 9-i 



(1856). 

 Micreune quadrilinea, Walk. MS. 



Hah. Singapore ; Borneo. 



A specimen labelled by Walker M. quadrilinea from Borneo 

 is in the British Museum, but I can find no description of the 

 synonym. 



XL1. — On some 'Enigmatical Names in Conchology and 

 Pycnogonoloqy. By the Rev. Thomas R. R. Stebbing, 

 M.A., F.R.S. 



For reasons which they think satisfactory, some naturalists 

 give references so curtly that those who wish to consult the 

 works referred to find the task exceedingly troublesome. 

 For instance, in a recent volume Neritine, Lamarck, 1809, is 

 rejected in favour of a later name, presumably on the ground 

 that Neritine is only a French word ; but neither is that 

 stated nor is any clue given as to which of Lamarck's 



