226 Prof. J. E. Duerden on the 



Skull strongly built, arched above, the zygomata not widely 

 spread, tapering forwards. Supraorbital edges finely beaded. 

 Palatal foramina extending to the level of the front lamina of 

 m^. Para pterygoid fossae deep, ending some way behind the 

 front of the mesopterygoid, whose ledge is level with the 

 middle of m^. Bullse fairly large. Teeth as described 

 above. 



Dimensions of the type (measured in the flesh) : — 



Head and body 155 mm. ; tail 102 ; hind foot 33*5 ; ear 17. 



Skull: greatest length 34*5 ; basilar length 28; greatest 

 breadth 17; nasals 13x4*5; interorbital breadth 4"6; 

 palatilar length 16 ; diastema 9 ; palatal foramina 8 X 2*4 ; 

 length of upper molar series 7*7 ; breadth across outside m^ 

 6*8, breadth of m^ 23. 



Hah. British East Africa, east of the Aberdare Mts. 

 Alt. 4480'. 



Type, Adult male, B.M. no. 6. 7. 8. 9. Original number 2. 

 Collected September 1905. One specimen. 



I have named this interesting rat after Mr. R. J. 

 Cnninghame, to whose tuition Mrs. Holms-Tarn owes her 

 skill in the capture and preservation of small mammals, 

 and to whom the Museum is indebted for many valuable 

 specimens. 



XXXIV. — The Morphology of the Madreporaria. — VIII. 

 T'he Primary Septa of the Rugosa *. Y^j J. E. Duerden, 

 Ph.D., A.R.Cy.S. (Lond.), Professor of Zoology, Rhodes 

 University College, Graharastown, Cape Colony. 



In the first paper of this series, published in 1902, entitled 

 "The Relationships of the Rugosa (Tetracoralla) to the Living 

 Zoanthese/' I confirmed Count de Pourtales's observation that 

 the rugose coral Lopliophyllum prollferum, E. & H., has six 

 primary septa (protosepta), all equal iu size and situated at 



* The first two parts of this series of papers appeared in the ' Johns 

 Hopkins University Circulars,' vol. xxi. nos. 155 & 15", and were re- 

 printed in the Ann. & Mag. Xat. Hist. ser. 7, vols. ix. & x., Mav and 

 August 1902 ; the third and fourth parts appeared in the Ann. & Mag. 

 Nat. Hist. vol. x., JN'ovenibor 1902, and vol. xi., February 1903 ; the hfth 

 and sixth parts iu the 'Biological Bulletin," vol. vii.," July 1904, and 

 vol. ix., June 1905 ; the seventh part in the Ann. & Mag. Nat. Hist, 

 vol. xvii.. May 190G. The work is being carried out with the assistance 

 of an appropriation iVom the Carnegie Institution, Washington. I am 

 under great obligations to Prof. Sydney J. Hickson, F.K.S., for seeing the 

 paper through the press in Eughuid. 



