62 Memoirs of the Indian Museum. [Vol. VII,. 



Passalus nasutus, Percheron. 

 Fig. VII, 19, p. 53. 

 Passalus nasutus, Percheron, 1835, pp. SO-91, pi. vi, fig. 8. 



One specimen from Parana, 24*4 mm. long. 



This species resembles the preceding, but is much smaller ; the central tubercle is conical,, 

 free distally and directed forwards and a little upwards ; the pronotum has less acute 

 anterior angles and somewhat more numerous punctures in the scars ; the epipleura and 

 shoulders of the elytra are densely covered with hair-bearing punctures ; the grooves of 

 the elytra are punctured much as in P. quadricollis . 



Passalus polli, n. sp. 



Fig. VII, 20, p. 53. 



One specimen from Joinville, 34-5 mm. long. 



Passalus polli is much larger than P. nasutus and has a smaller central tubercle 

 situated somewhat further forwards, whose apex is scarcely free. The frontal ridges are 

 small and extend almost directly outwards, then arching slightly forwards to end in 

 the inner tubercles, which are equidistant from the central and outer tubercles ; the 

 whole surface of the head in front of the inner tubercles is rugose and glossy. The 

 anterior ends of the marginal grooves are somewhat curved but scarcely expanded. The 

 mesosternal scars are depressed and covered with moderately large, indistinct, coalescent 

 punctures. The posterior intermediate areas of the metasternum are closely covered with 

 coarse punctures ; the lateral areas are very broad, especially behind, and are covered 

 with hair-bearing punctures. The puncturing of the grooves of the elytra resembles that 

 of P. quadricollis, but is somewhat deeper laterally ; the shoulders, epipleura and 

 anterior half of the rib immediately above each of the thickened lateral margins are 

 covered with hair-bearing punctures. The middle and hind tibiae are each armed with one 

 stout spine. 



Passalus torifems, Eschscholtz. 



Passalus toriferus, Eschscholtz, 1829, pp. 17-18. 



Three specimens from Brazil, one from Yucatan, and one said (no doubt incorrectly) 

 to come from S. Australia. Length 28-34 mm. 



This species differs from the last only in having the anterior part of the head less rugose 

 (the frontal area sometimes punctured), the inner tubercles situated close behind and slightly 

 on the outer side of the outer tubercles, the sides of the pronotum strongly and coarsely 

 punctured at least near the scars, and the extreme anterior part of the eighth groove of 

 the elytra hairy. The central tubercle is very variable and may be distinctly or not at all 

 free distally. 



Passalus punetatissimus, Eschscholtz. 

 Fig. VII, 21, p. 53. 

 Passalus "punetatissimus, Eschscholtz, 1829, pp. 19-20. 



A number of specimens from the Peruvian and Upper Amazon, two from Rio and 

 one from Blumenau. Length 26-5-30-0 mm. Also one specimen 34-2 mm. long, said to 



