77//-: xiriRtr.isr. i<m. 



Actinocamax Grossouvrei. Chalk {Miiynstir i(>i-iiiif;tiini(iii-y.oi\e). I-'iiulxM", N'tuksliirf. 

 Ill the CdllcLtiiiii of Mr. J. K. Moiiiincr, Driffield, Yorksliire. Natural size. 



Kio. I. \'ciitral aspect. 

 Vic. .;. Left lateral aspect. 



Fic. 3. Dorsal aspect. 



I'Ki. 4. Transverse section at ah eol.ir iiid. 



