1918.] F. H. Gravely : Passalidae of the World. 15 



Comacupes masoni, Stoliczka. 



Comacupes masoni, Stoliczka, 1873, pp. 151-2. 



Comacupes masoni, Gravely, 1914c, p. 207, pi. xi, figs. 4-4a. 



One specimen from an altitude of about 6oo ft. in the interior of Bedagei, Sumatra, 

 and three without locality label. They all resemble the Sumatran specimen referred to in 

 footnote 2 of p. 269 of my " Account of the Oriental Passalidae." Without further 

 specimens from the Malay Peninsula, however, it is impossible to say whether the Malay 

 and Sumatran races of the species are distinct. Length 29-30 mm. 



Comacupes stoliczkae, Gravely. 



Comacupes stoliczkae, Gravely, 1914c, p. 206, pi. xi, figs. 3-3a. 



Two specimens from Djember, Besoek, Java ; two from Mt. Marapol- Borneo ; and two 

 without locality label. M. Babault has sent a specimen 24-5 mm. long from Medan, 

 Sumatra, for identification. Length 23-7-25-0 mm. 



Comacupes basalis (Smith). 



Passalus basalis, Smith, 1852, p. 18, pi. i, fig. 5. 



Five specimens from Mindoro and other parts of the Philippine Islands. Length 



33" 7-3 6 -3 mm - 



Comacupes cavicornis, Kaup. 



Aulacocyclus cavicornis -J- laevicornis, Kaup, 1868a, p. 6. 



Comacupes cavicornis, Kaup, 1871, p. 19. 



Comacupes cavicornis, Gravely, 1914c, pp. 204-205, pi. xi, figs. 1-26. 



Several specimens from Singapore, Java (Tjibodas, Telaga Bodas in Garoet, Preanger) 

 and Borneo (Pontianak). Length 24-5-26-0 mm. 



These additional specimens show that the local races described in my ' ' Account of the 

 Oriental Passalidae " (pp. 204-206) are not constant, and must be treated as one. 



The species of Comacwpes may be identified thus :■ — ■ 



The mesostemum strongly punctured all over ; the abdominal 



sterna with at least a few hair-bearing punctures in fresh 



specimens . . . . . . . . . . . . • • 2. 



The mesosternum unpunctured except at the sides, the abdomen 



unpunctured and hairless . . . . . . C. foveicollis, Kuivert. 



f The lower margin of the overhanging portion of the central 



tubercle short, or ascending obliquely to meet the upper 



margin, which is always horizontal ; the tubercle usually 



truncate or concave anteriorly, not sharply pointed, narrower, 



keeled or rounded above . . . . . . . . • . • • 3. 



The lower margin of the overhanging portion of the central 



tubercle usually rather long, always horizontal, the anterior 



part of the upper margin descending obliquely to meet it in a 



more or less acute angle ; the upper surface usually more or 



less distinctly grooved longitudinally, or excavate . . . . • ■ 4. 



■A 



