Miscellaneous. A~A 



ill nouratioii arc so considerable that I should hardly have thouj;ht 

 it worth while to compare my specimen with tlie description 

 of an insect described as an JCcho when seeking to identity it. 

 hA-ho has a very short broad oval plerostigma. and Archineura a very 

 long narrow one (much longer thiwi in iSapho loni/istuftiui, De Selys), 

 and tlie dense reticulation below the lower basal cell is quite 

 ditt'crent in Anhineuru from either Echo or Sajtho. I need not 

 describe it, for it is shown in my figure and carefully described too ; 

 but the nervure bounding the lower l)asal area of the wing in Saplio 

 slopes more obliquely towards tlie base than even in Archineura, 

 while in h\-Jio it is much shorter, straiglitcr, and less conspicuous. 

 It was the general character of the ncuration which led me to com- 

 pare Archiiuurti witli Scqilio rather than with Kclio. Karsch makes 

 no mention of tlie remarkable neuration of the insect in his descri])- 

 tion, merely noting ordinary details ; nor does he allude to the aual 

 ajjpendages. Consequently he gives few data beyond the long 

 pterostigma wliich would suggest the identity of the two insects. 



liesearchi'x on the Structitrc, Orr/anization, and Classification of the 

 Fossil Ilcptilia. — Part IX. Section 2. On the reputed Mammals 

 from the Karroo Formation of Cape Colonij. Ey H. G. Seeley, 

 F.R.8. 



The author re-examines the remains of Theriodesmus, and con- 

 tests the interpretation of the carpus given by I'rofcssor Bardelebeu, 

 jtroducing specimens of South-African lleptiles in which there is a 

 single bone beneath the radius, as in Theriodesmus. This character 

 is shown in a small skeleton, at jireseut undest-ribed, which the 

 author obtained from Klipfontein, Fraserberg, which he regards as 

 referable to a new genus. Other evidence is produced supporting 

 the interpretation of three bones in the proximal row in the carpus, 

 in a specimen from Lady Frere. The author then compares the 

 fore limb of Theriodesmus with that of Fareiasawus, which was 

 obtained subsequently, and arrives at the conclusion that the types 

 of limb are too closely related to be referred to different orders of 

 animals, and therefore that Theriodesmus must be transferred from 

 the Mammalia to the Therosuchia. 



The skull described as 7'rit>flodon lonrjo'vus is examined, and its 

 close resem])lance to the skulls of new Theriodonts is pointed out. 

 The author believes that it shows evidence of possessing both pre- 

 frontal and post-frontal bones, which were situate as in Theriodonts, 

 and circumscribed the orbits in the same way ; so that, although 

 the post-frontal bones appear to have met in the median line to 

 form a crest, at the back of the frontal, there is no other character 

 in the skull by which it can be distinguished from the skull of a 

 Theriodont. It therefore appears to be reptilian, and thus would 

 make known divided roots to the molar teeth in lieptilia, and a 

 more complicated type of crown than in any Theriodont yet 

 know^n. — From the Froceedings of the Royal Society. (Communicated 

 by the Author.) 



