Mr. C. 0. Waterliouse on new Scarabseidao. 409 



of the umbilicus ; the latter closed. Septa approximate, 

 sutures forming a sharply-bent, forwardly-directed lobe after 



Fir?. 9. 



Nautilus (Herco(jJoss(i) Cassinianus. — a, lateral view of a fragment, show- 

 ing the curvature of the sutures ; b, front view, showing the position 

 of the siphuncle. Drawn from a specimen in the British Museum 

 (no. 71003). Natural size. 



leaving the umbilicus, then bent backwards in a similar lobe, 

 and finally directed forwards towards the periphery, which 

 they cross with a narrow arch. Siphuncle situated below 

 the centre. 



Remarks. This species closely resembles Nautilus (Herco- 

 glossa) dam'cuS) but is easily distinguished by its more cotii 1 

 pressed whorls and the position of its siphuncle. It may be 

 added that the close proximity of these species in the geolo- 

 gical series (JV. (//.) danicus from the uppermost beds of 

 the Chalk, and N. (H.) Cassinianus from the Lower Eocene) 

 renders their near relationship highly probable. 



The name of this species is taken from a list of the 

 Edwards Collection of Fossils now in the British Museum, 

 but the species was never described. Edwards erroneously 

 placed it in the genus Aturia. 



Horizon. London Clay (Lower Eocene). 



Localities. Finchley, Middlesex (Edwards's type) ; Isle of 

 Sheppey. 



L. — Further Descriptions of new Coleoptera of the Family 

 Scarabasida? in the British Museum. By Charles O. 

 Waterhouse. 



Since my last paper was written (supra, p. 365) I have, 

 by the kindness of Mr. I). Sharp, been able to examine the 

 type specimens of the species of Gymnopleurus described 

 by him. I think that in this genus, as in so many other 

 Coprophaga, there are two forms of males, a major and a 

 minor form, the major form having the anterior tibia? more 

 inflexed at the apex and the posterior angles of the thorax 

 Ann. <& Mag. N. Hist. Ser. 6. Vol. v. 29 



