248 Dr. A. G. Butler on Charaxes azota. 



XXXII. — A new Species qfjjeptonjrom Guernsey. 

 By George W. Chaster. 



During the examination of a large quantity of material 

 dredged last summer off Guernsey by Mr. E. R. Sykes, B.A., 

 F.Z.S., I met v/ith several examples of a minute bivalve 

 which appears to be new. Subjoined is a brief description. 



Lepton Syhesiij sp. n. 



Shell minute, nearly oval, w^ith a tendency to a subrhom- 

 boidal outline, rather convex, insequilateral, very thin and 

 hyaline, sculptured with numerous regularly disposed con- 

 centric striaj ; epidermis inconspicuous or absent ; umbones 

 lai-ge, but not projecting ; margins rounded ; teeth, in each 

 valve an extremely minute erect cardinal placed beneath the 

 umbo and an anterior and posterior lateral. 



Length 1 millim., height rather less. 



From the fry of L. squamosum and nitidum this species is 

 readily recognized by the want of prominence of the umbones 

 and by the sculpture, and from L. suhatulum and Glarkia. 

 by the different shape and hinge. In outline it somewhat 

 resembles the young of Lascea rubra, though the teetli and 

 sculpture are very unlike. 



I have great pleasure in associating the name of my friend 

 Mr. Sykes with the species. 



XXXIII. — On Charaxes azota of Hewitson, a rare Butterfly 

 of which the Type Specitnenis not in Hewitson's Collection. 

 By A. G. Butler, Ph.D., F.L.S., &c. 



In 1877 Mr. Hewitson described a female Charaxes under 

 the name Philognoma azota in the ' Entomologist's Monthly 

 Magazine,' vol. xiv. p. 82. It was obtained at Delagoa Bay 

 by Mr. and Mrs. Monteiro, and was, apparently, so nearly 

 related to the female of Charaxes protoclea, that it could 

 hardly be expected that Mr. Hewitson, with his broad views 

 respecting the variability of Butterflies, would have con- 

 sidered it worthy of a name. However, the fact remains that 

 he did give it the appellation of Philognoma azota. 



The following year Mr. Hewitson, in the same volume of 

 the Magazine, described a form believed to be the male of 



