(50 [August, 



Expanse, If inches. Habitat, Camaroons. 



In size and form allied to E. Ulabontas, but quite distinct in 

 markings. These two species seem to be the types of a new genus. 



MyCALESIS IbITINA, 11. s. 



Z^jjper-side : both wings brown, and bordered outwardly with a distinct hue of darker 

 brown ; fore-wing with an ocellus near the apex, black, edged with orange, and 

 containing two white eyes placed vertically. Hind-wing with two ocelli at the 

 anal angle, black, bordered with orange and with one white eye. 



Under-side : fore-wing as above, but a lighter brown, especially romid and below 

 the ocellus. Hind-wing with numerous waved markings of darker brown 

 mingled with lighter brown, and the ocelli faintly showing. 



Expanse, 1^ inches. Habitat, jMadagascar. 

 (To he continued.) 



NOTES ON CORIXA. 

 BY P. BUCHANAN WHITE, M.D., E.L.S. 



When dissecting some Corixce a year or two ago, I found that 

 the males of certain species were provided with a curious structure, 

 of which I can find no mention in any of the works within my reach. 



This structure (the precise function of which I do not clearly under- 

 stand, but which no doubt is part of the genital armature) is situated 

 on the posterior margin of the upper-side of the sixth segment of the 

 hind-body, and consists of a chitinons plate attached to a short pedicle, 

 and provided with rows of closely set teeth, resembling the teeth of a 

 comb. The free ends of the teeth are directed towards the mesial 

 line of the animal, and the rows overlap each other more or less. The 

 plate is more or less convex, and varies in shape in the different 

 species, as well as in the number of the rows of teeth. In some species 

 the rows are quite regular, in others more or less irregular, sometimes 

 not extending across the plate, and interj)oscd half way between two 

 of the rows ; sometimes irregular in regard to the height of the teeth 

 composing them. When there is irregularity, it is most manifest in 

 the apical rows. The size of the plate is not always commensurate 

 with the size of the animal. 



As this structure bears some resemblance to a " curry-comb," it 

 may be styled (for want of a better term) the "strigil" or " strigiliform 

 organ." 



Thoiigh, from other pursuits, I have not yet had . time to inves- 

 tigate this subject as much as I could wish, I think it advisable to 



