1884. J 219 



CxcLOTiiOEAx, Motsch. 



This genus is well distinguished from OUstJiopushj the untruncate 

 apices of the elytra, a character of interest, inasmuch as Olisthopus 

 appears to form a transition to the " truncatipenne " series of Cara- 

 hidcB. It is much less easy to point out good characters to distinguish 

 the genus technically from Anchomenus, but the insects of these two 

 genera are so distinct in facies and stature, that no doubt good char- 

 acters will ultimately be found to distinguish them. So far as the 

 Hawaiian fauna is concerned, Cyclotliorax is distinguished by the pre- 

 sence of two setae on the thorax, one in front of the middle, the other 

 on the hind angle itself (apparently very slightly attached, and, in 

 dried specimens, most frequently removed) ; it thus approaches 

 Disenoclius, from which it is distinguished by the less pedunculate 

 mesothorax, and by the scutellum not being confined to the peduncle, 

 and by the margined base of the elytra. 



Those interested in the genera of Hawaiian Garahidce should con- 

 sult, in addition to the above remarks, some observations by Mr. 

 Blackburn, in Eut. Mo. Mag., xvi, pp. 105—107. 



Thornhill, Dumfrieshire : 



February 2nd, 1884. 



ON THE EUROPEAN SPECIES OF LEPIDOPTJERA WITH APTEROUS 

 OR SUB-APTEROUS FEMALES. 



BT E. C. K. JOEDAN, M.D. 



Apterous species occur in all Orders of insects, but in Lepidoptera 

 wingless examples seem confined to the female sex ; none of these are 

 met with in the BhopaJocera, the first group are the Seterogynidcs, 

 placed in Staudinger's list next to the Zygcenidce ; there is only one 

 genus in the family, and it contains two species, Heterogynis penella 

 and Heterogynis paradoxa. These are insects of warmth and summer 

 time, the males dusky, with semi-transparent wings, the females 

 entirely apterous. Nextly in order, follows the remarkable genus 

 Ocnogyna, the species of which may be almost defined to be Spiloso- 

 mata with sub-apterous females, they are ten in number, and inhabit 

 Southern Europe, North Africa, and Asia Minor ; Ocnogyna Corsica 

 has almost the colour and appearance of a small tiger-moth. 



Sepialus pyrenaicus forms an exceptional instance in the genus 

 to which it belongs, the wings of the female being only rudimentary. 



The whole family of the Psy chides, with at least seventy species, 

 all have perfectly apterous females ; following these come the 



T 2 



