98 Memoirs of the Indian Museum. [Vol. VII 



Robust symmetrical insects at least 34 mm. long ; almost all 



Australian 1 . . . . . . . . . . Mastochilus, s. str., p. 100. 



Smaller insects — never more than 33 mm. long ; almost all 



from New Guinea and the neighbouring islands ; 2 often 



asymmetrical . . . . . . . . . . . . . . %. 



The upper margin of the left mandible strongly angulate ; 



the antennal lamellae longer and the body more flattened . . Analaches, 3 p. 101. 

 The upper margin of the left mandible, behind the upper tooth, 



not or scarcely angulate ; the antennal lamellae shorter and 



the body more robust . . . . . . . . Cetejus, 4 p. 102. 



Mastochilus (Pharochilus) dilatatus (Schönherr). 



Passalus dilatatus, Schöher'r, 1817, p. 334, appendix, p. 144. 



A few specimens from Queensland (Cardwell) and New South Wales (Richmond River 

 and Sidney). Length 3 1 -36 mm. 



The inner tubercles are large, somewhat as in M. quaestionis, but they are widely 

 separated, the frontal area being always strongly transverse, and not elevated. The general 

 texture of the upper surface of the head resembles that of M . australasicus. The more or 

 less confluent and transverse grooves on the mentum are deeply crescentic, being almost 

 equidistant from the anterior and posterior margins near the middle line ; and the 

 punctured lateral parts of the mentum have a narrow matt border on the outer side. 

 The elytra resemble those of M. quaestionis and M. australasicus, except that the punctures 

 are somewhat transverse, especially towards the posterior end, where the ridges between 

 them are apt to be more or less obsolete. 



Mastochilus (Pharochilus) nitidulus, MacLeay. 



PI. I. 



Mastochilus nitidulus, MacLeay, 1871, p. 175. 

 Pharochilus nitidulus, Kuwert, 1898, p. 333. 



Two specimens from New England, New South Wales, presented by Mr. H. Schrader. 

 Length 4 1 mm. 



The lateral lobes of the mentum resemble those of M. dilatatus. The median part of the 

 mentum resembles that of M. folitus, which species this one resembles in all other 

 respects. 



1 The only exception known is M . pectinigera (Heller) from New Guinea (length 39-5 mm). Concerning the position 

 of obliquus, Kirsch, see Heller, 1910, pp. 17-18. 



2 The only exception known is Analaches australiensif, which is apparently found both in Australia and New Guinea 

 (length 25-5-30-0 mm). , 



3 Kuwert, 1896, p. 230 Type, Epilache-s jmberilis, Kuwert, 1898, p. 337 (see Zang, 1905a, p. 238, footnote ; also 

 .ç. 24). 



4 Kaup, 1871, p. 53. Type, Aceraius virginalin, Kaup, 18686, p. 5. 



