540 Mr. D. Sharp and Mr. F. Muir on the Comjiarative 



This perhaps functions in the same manner as so many Staphy- 

 linids in Avhich the median lobe is bulbous ; but we have only one 

 specimen, and another examination of this and allied forms is 

 desirable. A specimen of another brachelytrous Malacoderm from 

 Larat (HelcogasterT) indicates that this form may prove to be 

 connected with Telephorinae. 



Danacaea dcnticollis (PI. LXV fig. 145). 



Median lobe tubular and curved ; the median orifice at apex, its 

 dorsal edge being drawn out into a point far beyond the ventral 

 edge ; median foramen at base, its ventral margin being emarginate, 

 forming a cavity into which the base of the tegmen fits. Tegmen 

 forming a "ring-piece," the dorsal part forming a small, truncate 

 lobe or cap (the lateral lobes) bearing a few hairs ; a thin strip 

 proceeds from each basal angle of the cap-piece and the two strips 

 meet together on the ventral side of the median lobe, thus forming 

 a ring round the median lobe. The ventral (or basal) part of the 

 ring-piece is raised into a knob which fits into the emargination at 

 the base of the median lobe and is attached thereto by muscle.=, 

 and the median lobe turns upon it when it is moved through the 

 ring-piece. Internal sac large and complex. 



Melyris abdomincdis. 



Median lobe tubular and slightly curved ; the median orifice is at 

 the distal end and extends some way along the tube as a narrow 

 slit ; median foramen at base. Tegmen forming a ring-piece, the 

 cap being very slightly emarginate at tip and bearing a few long hairs. 

 Internal sac large and complex. 



Henicopics armatus ? 



Median lobe short, tubular, the basal part slightly enlarged, 

 emarginate on dorsal face of median foramen where the tegmen 

 is attached. The median orifice at distal end, the ventral edge pro- 

 duced into a point beyond the dorsal edge. Tegmen forming a strong 

 ring-piece, the cap produced into two short lobes bearing hairs. 

 Internal sac large, studded with long, strong, chitinous spines. 



PsUothrix cyaneus (PI. LXV fig. 146). 



Is of the same type as Henkopns^ the median lobe being thick, 

 and produced into a short point on the ventral edge of the median 

 orifice, the cap of the ring-piece is slightly bilobed. Internal sac 

 large, studded with short chitinous spines. 



Astylus fascia tus. 



Has a long, slender, tubular median lobe, dilated a base where 



