the Coleopterous family Passalidie. 447 



rather sharp tubercle below each shoulder formed by the 

 extreme lateral margins of the elytra. The stridulating 

 apparatus is like that of Proculejus and other flightless 

 genera, a narrow strip of each wing having been retained 

 for the purpose. 



Another Oriental genus Kaupiolus ( Vellejus, Kaup.), is 

 flightless, a fact not hitherto recorded. Although having 

 the form of the elytra alw^ays attending this condition it 

 has no special affinity with any of the other genera 

 exhibiting it. 



I am able to supply the true habitat of two species of 

 Aulacocyclinae of which it has remained unknown. The 

 type of Comacupcs fclderi, Stol., is in M, Oberthiir's col- 

 lection, and I have identified it with an insect in our 

 collection found by Wallace at Amboina. Txnioeertis 

 dcyrollei, Kaup, is recorded as coming from St. Denis in 

 Reunion I. M. Oberthilr has sent me a specimen showing 

 that this is due to a mis-reading of "Pt. Denis." an 

 abbreviation standing for Port Denison in N. Queensland. 



The Passalus Sagittarius of Smith has been the subject 

 of extreme confusion. In his "Prodromus," Kaup placed 

 this first in his new genus Oileus, uniting F. rimator, 

 Truqui, with it as conspecific. The types, both of which 

 are in the British Museum, are quite different. Kaup deter- 

 mined a specimen in the collection as Sagittarius, but 

 evidently overlooked the type, for his description applies 

 to neither that nor his identified specimen which are quite 

 distinct from one another. In a later work he restricted 

 Oilcus to the so-called Sagittarius, and another species 

 {hcros, Truqui), not previously assigned to it, and finally, 

 in his Monograph he rejected Sagittarius also, completing 

 the transformation of his genus into " something new and 

 strange." *' Sagittarms" now constitutes, together with a 

 second form sargi, Kaup, the genus Eimor ; but further 

 adventures are in store for it, for Kuwert has contributed 

 his share to the tangle, dividing Rimor into two, and 

 placing the perturbed ghost of sagittaritts in his BimoricMS 

 Both authors refer to riviator, Truqui, by this name, and 

 they have been followed by Bates in the " Biologia Centr.- 

 Americana"; and it seems to have been again described 

 by Casey as Bimor munitus. Our specimens, recorded by 

 Bates, are chiefly from the same part of Mexico as those 

 to which the later name is given, and although larger 

 than Truqui's, vary considerably in their proportions. In 



