200 Mr. II. E. Andievves on Oriental Caiabidae. 



Tlie line of the grinding-edge of tlie cheek-teeth being taken 

 as a basis, the angle was in the first paper * deduced from 

 tliat formed by the terminal partof the incisor ; but later on f 

 I have found it better to use the whole extruded part of the 

 latter tooth. But since the description of the taking of the 

 angle might be easily misinterpreted, I have now had pre- 

 pared the accompanying diagram showing the way the process 

 is carried out and the angle read off. This will, I hope, 

 facilitate the work of other observers. 



Incisors thrown forward are those with a high resultant 

 angle, and might be called, as suggested in 1918 J, " pro- 

 odont," upright ones (approximating 90°), " orthodonr," and 

 those turned in towards tlie throat, with low angular index, 

 " opisthodont." 



The benefits of such definition as is given by a numerical 

 angle have already been fully emphasized, and need not be 

 here again detailed. 



XXIX. — Papers on Oriental Carabidse. — 'III. 

 By H. E. Andrewes. 



Carabini. 



Calosoma beesoni, sp. n. 



Length 24-25 mm. ; width 10*5 mm. 



Black ; vertex and sides of" head, sides of prothorax, 

 elytra, and underside (except along median line) reneous. 



Head (4'5 mm. wide) convex, closely punctate, more 

 finely on neck, strigose near eyes; mandibles not much 

 curved, with moderate cross-striation ; joints 2 and 3 of 

 antennae compressed, with a sharp edge, 3 half as long 

 again as 4. 



Prothorax transverse (7x4*5 mm.), cordate, bordered in 

 front and at sides, slightly emarginate in front; base bi- 

 sinuate, hardly wider than apex ; sides strongly rounded, 

 faintly sinuate behind, border not quite reaching base ; 

 median line faint ; basal foveas rather small, adjacent to hind 



* J. Bombay N. H. Soc. xxiv. p. 408 (footnote) (1916). 



t Ann. & Mag. Nat. Hist. (8) xviii. p. 302 (footnote) (1910). 



X Ibid. (9) i. p. 35 (footnote) (1918). 



