KNOWN SPECIES OF BOLBOCERAS. 21 



rected, the two horns of the pronotum much smaller, and the conical tubercle on each side 

 scarcely evident, appearing as a slight carina. 



Fig. 16, insectum supra visum ; 16 a, caput et prothorax a latere visa ; 17 a, caput et prothorax individui 

 alteri masculi supra visa ; 17 b, eadem a latere ; 17 c, labrum cum mandibulis. 



5. Bolboceras ferrtjgineus, De Laporte, Hist. Nat. An. Art. Col. vol. ii. p. 104. No. 4 ; 



castaneo-fulvus sub lente granulosus, capite antice carina sinuata antica tubercu- 

 loque subbifido transverso inter oculos, pronoto ante medium spatiis duobus parum 

 elevatis laevibus linea tenui impressa punctata (fere ad marginem posticum extensa) 

 divisis utrinque etiam versus angulos posticos impressione obliqua supra carina lsevi 

 marginata, elytris punctato-striatis, tibiis anticis 6-dentatis. — Long. corp. lin. 9^. 

 (Tab. III. fig. 18, caput et prothorax supra visa ; 18 a, mandibulae.) 

 Hab. in India orientali? In Mus. Gory (nunc Hope). 



Obs. M. Gory's specimen, from which Count De Laporte drew his description, is now in 

 Mr. Hope's Collection before me, bearing a label, " Bolboceras ferrugineus, Fabr., Ind. or." 

 Fabricius, however, described no Scarabceus under such a name, whilst the Scarabceus fer- 

 rugineus of Olivier (Ins. 1. Gen. 3. p. 148. pi. 23. fig. 202) does not belong even to the 

 present genus, and is from Senegal. It is possible that it may prove to be the other sex 

 of B. furcicollis, De Lap. 



6. Bolboceras carinicollis, De Laporte, Hist. Nat. An. Art. Coleopt. vol. ii. p. 104. No. 2 ; 



B.ferrugineo affinis sed magis castaneus, sub lente granulosus, capite carina tenui 

 marginali curvata verticeque tuberculis duobus parvis conicis inter oculos carina con- 

 nexis, pronoto obscuro in medio carina transversa abbreviate instructo maculaque 

 nigra utrinque versus angulos posticos, elytris striatis striis punctis minutis, tibiis 

 anticis 5-dentatis. — Long. corp. lin. 10. (Tab. IV. fig. 5, caput et prothorax supra 

 visa.) 

 Hab. in India orientali? In Mus. Gory (nunc Hope). 



7. Bolboceras Calantjs, Hope MSS. ; fulvus vel rufo-castaneus, clypeo postice bicornuto, 



prothorace cornubus 4 versus marginem anticum duobus intermediis contiguis et a 

 reliquis cavitate rotundata utrinque separatis. — Long. corp. lin. 7-8-j. (Tab. III. 

 fig. 19; IV. fig. 6, 7.) 

 Hab. in India orientali, Bombay. In Muss. Melly et Hope. 



Variat colore, interdum luteo-fulvus, interdum rufo-castaneus ; vertice concavo, parte antica tuberculis 

 duobus elevatis armata, postice linea vix elevata et in medio interrupta instructs. Prothorax dorso 

 vix punctato, .lateribus punctulatis, versus marginem anticum cornubus 4 armatus ; duo contigua 

 elevata subobtusa, alterisque duobus lateralibus majoribus, e prioribus utrinque excavatione plus nri- 

 niisve profunda separatis ; canali tenui longitudinali mediano. Elytra tenuissime punctato-striata. 

 Tibiaa anticae 7-dentatas ; dentibus plus miniisve acutis. 

 Foemina? Rufo-fulva nitida; capite et lateribus pronoti punctatissimis, hujus disco et parte postica fere 

 impunctatis. Clypeus margine postico acute elevato et parum curvato, carinaque parum arcuata 

 inter oculos instructus. Pronotum antice vix retusum carina curvata parum distincta versus margi- 

 nem anticum, utrinque tuberculo parvo lineaque impressa mediana ad marginem posticum extensa. 



