174 Messrs. W. K. Parker and T. R. Jones on the 



It is convex and hairy externally, concave within, where the 

 palpal organs are highly developed, prominent, and complicated, 

 and of a reddish-brown colour. 



Falces moderate-sized, convex, and same colour as the maxillae. 

 Sternum large, prominent, and heart-shaped, and, together with 

 the labium, black. 



Abdomen slightly hairy, shining, oval and very convex on the 

 upper side ; it projects considerably over the base of the cephalo- 

 thorax. Colour, in adult males, jet black; in adult females, 

 black, with at times a greenish-brown hue, and in some speci- 

 mens with a few pale angulated lines towards the apex of the 

 abdomen, the angles directed forwards. Immature individuals 

 are often greenish black, with legs dirty greenish brown, paler 

 at the joints. 



Adult males and females of this species were discovered by 

 myself in abundance, during the summer of 1859, at the roots 

 of grass and underneath rubbish on dry bank-sides, near Church 

 Town, Southport, Lancashire. 



XX. On the Nomenclature of the Foraminifera. 

 By W. K. PARKER, M. Micr. Soc., and T. R. JONES, F.G.S. 



[Continued from p. 116.] 



24. Nautilus Spengleri. Five varieties. Page 84. Fichtel 

 and Moll make the following appropriate references : Linn. 

 Syst. Nat. xiii. Gmel. p. 3371. no. 10: Spengler, Schrift. dan. 

 Gesellsch. Kopenh. vol. i. p. 373, pi. 2. tig. Sab c: Schroter, 

 Einleit. Conch.-Kennt. vol. i. p. 756; Neue Literat. u. Beytr. z. 

 Naturg. vol. i. p. 309, pi. 1. figs. 3-6; Schreibers, Conch. 

 Kenntn. vol. i. p. 5. no. 10. 



a. PI. 14. figs. d-f. 



/3. PI. 14. figs. y-i. 



7. PL 15. figs. a-c. 



8. PI. 15. figs. d-f. 

 e. PI. 15. figs, g, h. 



PI. 15. figs, i, Jc, sections. 



" Recent : from sand in a Buccinum cassideum (Gmelin) from 

 the East Indian Sea ; and from the Red Sea." 



This belongs to the Rotalian group; the shell is unsym- 

 metrical, like the other Rotalia, and is marked by an extensive 

 growth of exogenous granular shell-matter. This luxuriant 

 shell-growth is shown also in the very variable rays or spines, 

 which, commencing near the umbilicus in the septal interspaces, 

 advance outwards often to a considerable distance (equal even 



