16 Memoirs of the Indian Museum. [Vol. VII r 



( The central tubercle not strongly elevated, truncate or concave 



\ in front, very variable . . . . . . . . G. cylindraceus, p. 14. 



J The whole anterior end of the central tubercle raised well above 



( the supraorbital ridges, not truncate or concave in front . . C. masoni, p. 15. 



The central tubercle marked above with, at most, a more or less 

 distinct longitudinal groove . . . . . . . . . . 5- 



The central tubercle strongly excavate above .. .. C. cavicornis, p. 15. 



( The central tubercle broad above, pedunculate . . . . C. basalis, p. 15. 



( The central tubercle narrow, not pedunculate . . C. stoliczhae, p. 15. 



Genus TAENIOCERUS, Kaup, 1871, p. 20. 

 Type, Passalus bicanthatus, Percheron, 1841, pp. 41-2, pi. Ixxix, fig. 5. 



Taeniocerus bicanthatus (Percheron). 



Passalus bicanthatus, Percheron, 1841, pp. 41-42, pi. Ixxix, fig. 5. 

 Taeniocerus bicanthatus, Gravely, 1914c, pp. 208-209, pi. xi, figs. 7-76. 



One specimen said, probably erroneously, to come from Ceylon ; others from Penang, 

 Singapore, Bintam Island, and Borneo (a number of specimens from Mt. Marapok in Dent 

 Province, northern spurs of Mt. Kina-Balu, Labuan and Pontianak). Mr. C. Holman-Hunt 

 has sent a specimen from Rawang, Malay Peninsula, for examination. Length 26-0-29-5 mm - 



Taeniocerus platypus, Kaup. 



Aulacocyclus platypus, Kaup, 1868a, p. 5. 

 Taeniocerus platypus, Kaup, 1871, p. 21. 



Numerous specimens from Sumatra (Bedagei Interior, ca. 600 ft.), Java (Boeloe Lawang 

 in Pasoeroean) and Borneo (Mt. Kina-Balu). M. Babault has presented us with specimens 

 from Medan, Sumatra. Length 16-3-19-5 mm. 



Taeniocerus pygmaeus, Kaup. 



Aulacocyclus pygmaeus, Kaup, 1868«, p. 5. 



Taeniocerus pygmaeus, Kaup, 1871, p. 20. 



Taeniocerus pygmaeus, Gravely, 1914c, pp. 209-210, pi. xi, figs. 8-8«. 



One specimen each from the Malay Peninsula and Sumatra (Bedagei Interior, ca. 600 ft.) 

 and several from Borneo (two from Mt. Marapok, Dent Province). Mr. C. Holman-Hunt 

 has sent specimens from Kuala Kansar, Malay Peninsula, for examination. Length 14-2- 

 15-9 mm. 



Taeniocerus bicuspis, Kaup. 



Aulacocyclus bicuspis, Kaup, 1838a. p. 5. 



Taeniocerus bicuspis, Kaup, 1871. pp. 21-22. 



Taeniocerus bicuspis, Gravely, 1914^, pp. 210-211, pi. xi, figs. 9-9a. 



Four specimens from Tukvar . Darjiliug District, and one from " India." Length i8-^— 

 2 1- 1 mm. 



