328 BET, H. S. GORHAM ON THE [Apr. 19, 



LlCTUS. 



Lijctus, Fabr. Eat. Syst. i. p. 502 (1792) ; G-orh. Biol. C.-Am., Col. 

 iii. pt. 2, p. 211. 



Ltctus peostomoides. 



Lyctus prostomoides, Grorh. Biol. C.-Am. 1. c. p. 212. 



Hah. St. Vincbxt : leeward side. Grenada : St. John's 

 Kiver, leeward side (H. H, Smith). 



A single example found at each of the localities does not seem 

 to differ from examples of about the same size from San Lorenzo, 

 Panama. 



From the thorax being a little wider in front, and the sides 

 accordingly contracting towards the base, I think these examples 

 may be males. 



Sphindus. 



Sphindus, Chevrolat, in Silb. Eev. Bnt. i. (1833). 



Sphindus dubius ? 



Sphlndus duhius, Gyllenhal, Ins. Suec. i. p. 243 ; Jacq. Duv. Gen. 

 Col. iii. t. 55. f. 275. 



Hah. Grenada : Balthazar (windward side) and Mount Gay 

 Estate (leeward side) {H. H. Smith). 



There is only one example from each of these localities, and I 

 cannot see, on comparison of them with English examples of 

 S. dubius, that they differ sufficiently to warrant their separation. 

 Lecoute was doubtful about the difference of his S. americanus, as 

 he had not seen S. dubius {cf. Leconte, New Species of N. Am. 

 Col. i. 1865, p. 104). Other American coleopterists seem to feel no 

 doubt. Our West-Indian examples are i-ather smaU and rather 

 short. Sphindus in England is usually found in a small black 

 powdery fungus on the bark of beech trees. 



bostbtchid^, 



Heterarthron. 



Heterarthron, Guerin, Icon, du Regn. Anim., Ins. p. 286 ; Lesne, 

 Ann. Soc. Ent. Fr. 1896, pp. Ill, 114. 



Polycaon, Laporte de Casrelnau, in Silberm. Eev. d'Ent. iv. 

 p. 30 ; Gorh. Biol. C.-Am., Col. iii. pt. 2, p. 210. 



Heterarthron eemobalis. 



Apate femoralis, Fabr. Ent. Syst. i. 2, p. 361. 



Heterarthron femoralis, Lesne, Ann. Soc. Ent. Fr. 1896, p. 118. 



Polycaon exesus, Leconte, Proc. Ac. Phil. 1858, p. 74, $ ; Horn, 

 Proc. Am. Phil. Soc. 1878, p. 553. $ ; Gorh. Biol. C.-Am. 1. c. 

 t. X. ff. 18 & 19. 



Hah. St. Vincent : leeward side {H. H. Smith). 2 • 



M. P. Lesne has adopted unhesitatingly the synonymy, which 

 I pointed out as probable in the ' Biologia Centr.-Am.,' of Polycaon 



