Annales des Sciences Natitrelles. 237 



which enumerates the contents of that volume under the respec- 

 tive heads of monographs, new genera, and new species. The 

 monographs are two in number; one of Diopsis, five species 

 of which are described, from Sierra Leone ; and the other of Dri/i- 

 nuSy comprehending fourteen species. Of new genera there are 

 nine; 1. Thyrsia^ a genus allied to Prionus; 2. Polytomus^ sy- 

 nonymous with Rhf'picera of Latreille; 3. ZirophoruSy a Staphy- 

 linidous genus previously published by Germar under the name 

 of Leptochirus ', 4. Hydroptilay distinguished from Phryganea by 

 its hinder wings, which are nearly linear, ciliate, and not plaited ; 

 5. Xyela * ; 6. Dirrhinus^ and 7. Jgaon, Hymenopterous genera 

 of the family of Pupivora, to the first of which Latreille also refers 

 the Chalets cornigera of Juriue ; 8. Calyphus^ a singular genus of 

 Muscidce from the East Indies, the scutellum of which is pro- 

 longed over the abdomen as in Scutellera ; and 9. Chionea, an 

 apterous tipulideous insect, which is found running upon the snow 

 in Sweden and also in the Alps. The new species described are 

 chiefly Lepidopterous and Coleopterous. Of these fifteen are 

 natives of Sweden and one hundred and five exotic. 



To the remaining papers on zoological subjects it will only be 

 necessary to refer, since they relate entirely to anatomical and 

 physiological points, which, although of primary importance to 

 the advancement of the science, are too generally unattractive to 

 induce us to extend this analysis. Of these there are two from 

 the pen of Geoflfroy Saint-Hilaire, in one of which he pursues his 

 system of the formation of the Cranium into the investigation \)f 

 that of the Crocodile, and in the other endeavours to determine 

 in man the position of " the Adgustal, one of the bones of the 

 Arch of the Palate." The " Memoir on the Lymphatic Vessels 

 of Birds, and on the method of preparing them, by M. E. A. 

 Lauth," fully demonstrates their existence, and is illustrated by 

 several well executed coloured plates ; appended to it is the 

 " Report" on its merits by Cuvier and Dumeril, in which Ma- 

 jendie did not join, because although he admitted that the exist- 

 ence of absorbent vessels in the mesentery was demonstrated, he 

 still persisted that it was by no means clear that they performed 



* Vide Zoological Journal, Vol. L p. 570 

 Vol. n. R 



