158 » THE ZOOLOGIST. 



Mr. 0. Thomas exhibited and made remarks on a rare Antelope, 

 Nanotragus living stonianus, from Northern Zululand. 



Dr. Forsyth-Major exhibited and made remarks on a tooth of Orycteropus 

 from the Upper Miocene of Maragha, Persia, which he referred to 0. gaudryi, 

 of the Upper Miocene of Samos. Drawings of the remains of the latter 

 were exhibited, as well as a photograph of a femur of a Struthious bird from 

 the same deposit in Samos. The habitats of Struthio and Orycteropus were 

 thus shown to have been essentially identical in past times, as in the 

 present. Therefore the general conclusions to be drawn from their 

 geographical distribution would apply equally to both. 



Mr. Oldfield Thomas made some suggestions for the more definite use 

 of the word " type" and its compounds, as denoting specimens of a greater 

 or less degree of authenticity. 



Mr. P. L. Sclater pointed out the characters of a new African Monkey 

 of the genus Cercopithecus ; and took the opportunity of giving a list of the 

 species of this genus known to him, altogether thirty-one in number, 

 together with remarks on their exact localities. 



Prof. F. Jeffrey Bell read a paper on Odontaster aud the allied and 

 synonymous genera of the Asteroidea. 



Mr. A. Michael read a paper upon a new species (and genus) of Acarus 

 found in Cornwall. The creature in question, which it was proposed to 

 call Lentungula algivorans, was found in some numbers on a green alga, 

 Cladophora fracta, near the Land's End. It was a minute creature 

 belonging to the family Tyroglyphidae, the remarkable feature about it 

 being that, whereas the two hind pairs of legs were terminated by a hard 

 and powerful single claw (which claw sprang from the end of the tarsus), 

 the two front pairs had the tarsus itself hardened, and curved strongly 

 downward, lormiug clingiug- and walking-organs; while from the side of 

 the tarsus sprang a long peduncle, flexible in all directions at the will of 

 the creature, and bearing an exceedingly minute claw. This apparatus 

 was not used in climbing, but had become wholly tactile. Such an 

 arrangement was previously unknown in the Acarina. 



Prof. Howes described some abnormal vertebrae of certain Kanidae (Rana 

 catesbiana, R. esculenta, and R. macrodon), in which the so-called "atlas" 

 possessed transverse processes and trans-atlantal nerves. Prof. Howes 

 discussed the bearings of these specimens on the morphology of the parts, 

 deducing the argument that the first vertebra of the Amphibia is probably 

 to be regarded as a representative of at least two vertebrae, of which the 

 formative blastema has become merged in the occiput in the Amniota. 

 The author also described a stage in the development of the urostyle of 

 Pelobates, aud showed that, in this batrachian, there is a provisional 

 inversion in the order of development of the urostyle and parts of the 

 preeoccygeal vertebrae. He also described a reduced hind limb of ISala- 



