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



nearest the suture being unpunctured, the fourth containing more or less obsolete 

 punctures, the fifth and sixth containing strong round punctures, and the seventh, eighth 

 and ninth containing larger and more or less transverse punctures. In other respects 

 this species resembles P. affinis. 



Passalus recticlypeatus (Kuweit). 



Petrejus recticlypeatus, Kuwert, ]898, p. 202. 



Four specimens, without locality record. Length 23-3-24-7 mm. 



This species is very like the preceding one, but is smaller and has the apex of the central 

 tubercle acute, free and directed forwards above the finely roughened but unpunctured 

 frontal area, the inner tubercles being obsolete or absent. The posterior intermediate 

 areas of the metasternum are almost or quite unpunctured ; the lateral areas are more or 

 less rugose and bear a few fine hairs. The lateral grooves of the elytra, though much more 

 strongly punctured than the dorsal, are less strongly punctured than in Passalus catherinae, 

 which this species resembles in other respects. 



Passalus eucadorensis, n. sp. 



Fig. VII, 9, p. 53. 



One specimen from Ecuador, 20-4 mm. long. 



In this species the cephalic tubercles and ridges resemble those of P. catherinae, except 

 that the central tubercle is weaker ; otherwise the insect resembles P. recticlypeatus, except 

 that the anterior margin of the head is slightly prominent in the middle line, and that the 

 metasternum and elytra are entirely hairless. 



Passalus curtus (Kaup). 

 Fig. VII, 10, p. 53. 



Petrejus curtus, Kaup, 1869, p. 38. 



One specimen from the Cauca Valley, 23-3 mm. long. 



The free apex of the central tubercle is longer than in P. recticlypeatus, but the frontal 

 ridges are less strongly elevated and become obsolete in front. The frontal area is 

 irregularly marked with coarse punctures. The sides of the pronotum and the posterior 

 intermediate areas of the metasternum are somewhat more extensively punctured. The 

 mesosternal scars and the lateral areas of the metasternum are finely punctured and 

 hairy. The epipleura are without, and the shoulders of the elytra almost without, 

 hair-bearing punctures. The puncturing of the dorsal grooves of the elytra is about 

 as coarse as that of the lateral grooves. In other respects this species resembles 

 P. recticlypeatus. 



Passalus gracilis (Kaup). 



Petrejus gracilis, Kaup, 1869, p. 38. 



One specimen from Columbia, 16-5 mm. long. 



A much smaller species than the preceding, with more flattened central tubercle, 

 conical forwardly directed parietal ridges, somewhat more distinct frontal ridges, smooth 



