540 Mr. D. Sharp and Mr. F. Muir on the Comparative 
This perhaps functions in the same manner as so many Staphy- 
linids in which 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 (Helcogaster?) indicates that this form may prove to be 
connected with Telephorinae. 
Danacaca denticollis (Pl. 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 raisedinto a knob which fits into the emargination at 
the base of the median lobe and is attached thereto by muscles, 
and the median lobe turns upon it when it is moved through the 
ting-piece. Internal sac large and complex. 
Melyris abdominalis. 
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. 
Henicopus 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. 
Psilothriz cyaneus (Pl. LXV fig. 146). 
Is of the same type as Henicopus, 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 fasciatus. 
Has a long, slender, tubular median lobe, dilated a base where 
