2 MR. P. H. A. MARSHALL ON [Jan. 14, 



had been obtained by Mr. B. B. Johnstone (Native Commissioner) 

 in the Awemba district of North-eastern Rhodesia, and had been 

 sent home and presented to the British Museum by Mr. Robert 

 Codrington, Administrator of that country. 



This specimen proved a very considerable extension of the range 

 of the species, hitherto known only from West Africa, where it had 

 a wide distribution, from Sierra Leone to Angola. No differences 

 of importance, however, were perceptible between the Rhodesian 

 specimen and examples from West Africa. 



Since Mr. Oodrington's specimen had arrived, a frontlet and 

 piece of skin of the same species had also been received from 

 Mr. 0. Baragwanath of Bulawayo, and this, it was believed, had 

 been obtained in the same district. 



In N.E. Rhodesia this Antelope was said by Mr. B. B. Johnstone 

 (who had obtained the specimen for Mr. Codrington) to be met 

 with in stony localities at fairly high altitudes. It was sup- 

 posed to occur throughout the Luemba Highlands and along the 

 Mohinga Mountains east of Lake Bangweolo, but was not 

 common. Its cry was like that of a Duiker. Its native name 

 was " Chibusimawe " (=:Big Mountain Goat). 



Mr. W. B. Tegetmeier, F.Z.S., exhibited the skin of an animal 

 which it had been suggested was a hybrid between a Hare and 

 a Rabbit, but which had proved to be merely a Mountain Hare 

 [Lepus variabilis). 



Mr. Tegetmeier also exhibited a skull of a Rabbit showing 

 overgrown incisors in both jaws. 



The following papers were read :- 



1. On Variation in the Number and Arrangement of the 

 Male Genital Apertures in the Norway Lobster 

 (Nephrops norvegiciis). By F. H. A. Maeshall, B.A., 

 Christ's College, Cambridge \ 



[Received November 21, 1901.] 



(Text-figures 1-3.) 



The total number of specimens of the Norway Lobster examined 

 for the pvirposes of this investigation was 1123, of which 1080 

 were males. The latter presented no less than ten different 

 arrangements of the genital apertures, in addition to the normal 

 arrangement of an opening on the basal joint of each of the fifth 

 walking-legs. Before giving the numerical details of the degrees 



^ Communicated by W. Bateson, F.Z.S. 



