578 Mr. D. Sharp and Mr. F. Muir on the Coviparativc 



and the ends of them coiled up into balls as in the Cara- 

 bidae ; situate near their extremity are six small, simple, 

 globular glands attached to the vasa deferentia by slender, 

 short ducts. These globular glands are simple and have 

 none of the complex structures of such forms as Melolontha 

 vulgaris. 



Trox penicillatus (PI. XLII figs, 4 and 4«). 



This is similar to T. scahpr, but more complex, especially the 

 median lobe. There is no differentiated sac. 



To'ox sp. ? 1, N. Australia (PL XLII fig. 1). 



Median lobe broad, flattened, curved and pointed at tip, with a 

 little ridge running down the middle of the dorsal side ; median 

 orifice across tip on ventral side. Lateral lobes well developed, 

 embracing the lateral edges of median lobe nearly to the tip, not 

 meeting together at base either on dorsal or ventral side. Internal 

 sac small but distinct, without armature. 



Trox sp. ? 2, N. Queensland. 



This is of the same type as T. sp. ? 1 ; the median lobe is broad, 

 flattened and pointed at the tip ; the median orifice situated across 

 the tip, the lower pointed lip of which turns down when the 

 sac is evaginated. Lateral lobes only embracing the sides of the 

 median lobe and not meeting on either side at their bases. Basal- 

 piece small, membranous on dorsal side, large at the sides where 

 the lateral lobes are articulated and a narrow chitinous strip on the 

 ventral side. Internal sac short, with curved chitin plate as 

 armature. 



Trox suherosus. 



Similar type to Trox sp. ? 2, but the basal-piece is longer. 

 Internal sac short, covered with fine soft hair, and on the ventral side 

 with a curved chitinous plate which projects beyond the sac when 

 evaginated. 



Qlaresis hcckeri. 



Median lobe large, well developed, with pointed tip turning up 

 dorsally ; membranous on ventral side ; median orifice on ventral 

 side near tip ; point of articulation on dorsal side. Lateral lobes 

 slightly longer than median, nearly meeting at their base on 

 dorsal face ; concave on the inner side and embracing the dorso- 

 lateral part of the median lobe ; tips bluntly pointed. Basal- 



