760 DR. It. lUlOOM ON TiaTVIA)U().\ [.M;iy 3, 



Zoiinci/pris hci'is (j. I). Sais. 



Fig. 1. Adult fi'iiialc, vioweil from li^ht sule. 

 5. Siiini", (lorsiil view. 

 (>. Muscular impressions of right vnlvc. 

 7. Extremity of left inferior antenna. 



Steiioci/pris pri'iirmd/a Urady. 



FifT. 8. Adult fV'Miali', vii>\vud from riijlit side. 

 0. Same, dorsul view. 



10. Caudal rami. 



llvtcrnci/prix iliihhi (1. O. Sars. 



P'ip. il. .\dult female, viewed from right side. 

 1'-'. Same. (IoinmI view, 

 l-'i. Musenl:ir impressions of right valve. 



11. Caudal ramu>. 



PlateLXXIII. 



Ili/Dci/pris propiiii/iKi (i. O. Sars. 



Fip. 1. Adult female, viewed fron.i left side. 



2. Same, dorsal view. 



3. Muscular impressions of left valve. 



4. Caudal ramus. 



Ili/ocj/pvis alia G. O. Sar.s. 



P^ig. ;i. .\dult male, viewed from left siile. 

 (i. Same, dorsal \ lew. 

 7. Caudal ramus. 



Limniciitho'c obftixaln (i. 0. Sars. 



Fig. 8. Adult female, viewed from right side. 

 0. Same, dorsal \iew. 



10. ^luscular iin[)ressi()us of right valve. 



11. Superior antenna. 



12. Inferior antenna. 

 1;^. liighl series of leiTS. 

 Ik Cauihil iolie. 



l''<irnri/j)ri(X rur/a (i. ( ). Sars. 



Fig. 1.'). .\ilult male, viewed from right side. 

 Iti. Same. dcir>al view. 

 17. Cauda! ramus. 



fi. ( )ii 'D'ltf/lndoii, Mild on the l^^l:itionslii[).'i of tlio 



:\Iitltituneiciilata. T.y U. BkooM. M.D., D.Sc, (MM.Z.S. 



[Received March U. 1910.] 



(Text-figums (i7 .uid ()H.) 



Tn 1884 Owen de.sciibed, undfi- the iiiiiue Trit}/lo<Jnn Innj/rrnif^, 

 a very leiiiJii-kablti imperfect .skull .subniitted to liiiii by Dr. E.xtoii, 

 of the Bloeiiifontein Mnscuui. Tlie specimen wii.s .stated to have 

 come from '* Tliaba-chou, liasiitolaiid," and was believed to be a 

 Tria.ssic mammal allied to the European Stpreotiiiathus. There is 

 no locality known in Basutoland of the name 'i'haba-chou, but 

 there are several mountains called Thaba-tsiuii. ami it is probably 

 fr(}m one of lhc.se that the specimen eame. In any case wo now 



