1918.] F. H. Gravely : Passalidae of the World. 49 



Paxillus brasiliensis (Saint-Fargeau and Serville). 



Fig. VI, 7, p. 45. 



Passalus brasiliensis, Saint-Fargeau and Serville, 1825, p. 21. 

 Paxilloides brasiliensis, Kuwert, 1898, p. 181. 



Three specimens from Bolivia, one from Bogota, one from Yucatan and two without 

 locality labels. Length 18-21 mm. 



I follow Kuwert with regard to this determination ; the original description (quoted 

 by Guérin, 1828, p. 90) being altogether inconclusive. 



The anterior margin of the labrum is lightly concave as a rule. The ends of the five 

 antennal lamellae form a straight line when furled, the middle lamella being scarcely if at 

 all longer than the penultimate one. The anterior margin of the clypeus may be lightly- 

 concave, or may be lightly convex close to (but on either side of) the middle line, where 

 in this case it is faintly notched. The frontal ridges arise at right angles to one another 

 and are practically straight ; the extent of the transverse anterior punctured area between 

 them is variable. The posterior angles of the pronotum bear only a small patch of 

 short hair beneath. The mososternal scars may be smooth or rugulose, glossy or matt . 

 The lateral areas of the metasternum are hairless. The strength of the puncturing of the 

 dorsal grooves of the elytra is somewhat variable. The shoulders of the elytra are 

 somewhat hairy, but are not densely covered with long pile as in the preceding species. In 

 other respects the present species resembles the last. 



Paxillus pentaphyllus (Beau vois). 

 Fig. VI, 8, p. 45. 

 Passalus pentaphyllus, Beauvois, 1805, p. 2, pi. i, fig. 2. 



One specimen from Mosquito 26-3 mm. long. 



The anterior margin of the labrum is somewhat more strongly convex than in the- 

 preceding species. The antennae resemble those of P. camerani, but the ends of their 

 lamellae when furled form a somewhat more strongly curved line. The outer tubercles 

 are long and slender, and are directed forwards above the angles of the clypeus which, 

 however, are exposed beneath them. The area between the outer tubercles is glossy and 

 unpunctured. In other respects this species resembles the preceding one, except that 

 the posterior intermediate areas of the metasternum are more extensively and very coarsely 

 punctured. 



Paxillus leachii, MacLeay. 



Fig. VI, 9, p. 45. 

 Paxillus leachii, MacLeay, 1819, p. 106 (Paris edition, p. 20). 



Many specimens from Guatemala, Iquitas (Upper Amazon), Bahia, Rio de Janeiro, 

 Para, Esperito-Santo (Brazil), Bolivia, Nicaragua, British Honduras, Mexico, and 

 Montevideo. Length 16-0-21-5 mm. 



This species differs from the last only in having the anterior margin of the labrum less 

 strongly concave, in having the ends of the antennal lamellae in a straight line when the 

 antennae are furled, in having coarse punctures between the outer tubercles of the head, 



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