172 Mr. H. J. Carter on Gypsina melobesioides 



of blue-black. The young had the bare skin yellowish red, 

 without any admixture of blue. The measurements given by 

 Prof. Bocage in the P. Z. S. 1873, p. 702, show that his 

 examples are larger than the B. pyrrhops. 



The four species may be distinguished as follows : — 



A. With a coloured plate at base of maxilla. 



a. Casque cui'ved, rounded on top, circular opening 

 in front. 

 a\ Bare skin of face and neck prussian blue, 



gular pouch scarlet \. B. abyssinicus. 



v. Bare skin of face orange-red, of neck dark 



blue ; gular pouch orange 2, B. pyiThops. 



B. Without a coloured plate at base of maxilla. 



a. Casque nearly straight on top, oval opening in 



front ; all the bare skin on head and neck 



yellowish orange or red, with a blue spot at 



base of mandible 3. 5. guineensis. 



h. Casque compressed laterally, entirely closed in 



front ; bare skin all blue ? 4. 5. caffer. 



The distribution of the species is somewhat as follows : — 

 The B. abyssinicus is a native of Abyssinia and Sennaar in 

 Eastern Africa. B.jpyrrhops is from the region of the Congo, 

 but the extent of its dispersion unknown, although it is pro- 

 ble that this district may be its southern limit, as the B. 

 guineensis is found in Angola and the region north of Dama- 

 raland ; and, lastly, the B. caffer is met with in Damaraland 

 and the Zambesi district, and the country lying to the south 

 as far as the Cape. The above distribution can only be given 

 as approximately correct; for our present knowledge does not 

 enable us to define the dispersion of any of the species in the 

 interior of the continent, our acquaintance with most of them 

 having been formed from the specimens obtained at different 

 points comparatively near to the coast-line. 



XXIV. — On a Melobesian Form of Foraminifera (Gypsina 

 melobesioides, mihi) ; and farther Observations on Carpen- 

 teria monticularis. By H. J. Carter, F.B.S. &c. 



In my paper on the " Polytremata " (' Annals,' 1876, vol. 

 xvii. p. 185, pi. xiii. figs. 18, 19) I have given a description 

 and figure of a species of Foraminifera having a " Melohesia- 

 like" growth, with a striking resemblance to Polytrema in 

 the polygonal reticulation and foraminated interstices pre- 

 sented by the surface. And in my paper " On the Locality 

 of Garpenteria halaniformis " {ih. 1877, vol. xix. p. 215, 



