538 Mr. D. Sharp and Mr. F. Muir on the Comimrative 



Ghauliognathus } (PL LXIV fig. 139). 



The median lobe formed of a chitinous plate on the dorsal aspect 

 and membranous on the ventral, slightly curved. The tegmen 

 consists of two asymmetrical curved, pointed lateral lobes, and a 

 small basal-piece connecting them. Internal sac a simple dilatation 

 of the ejaculatory duct. 



The undifferentiated sac separates this from the other 

 Telephorus forms; in this, as well as in the form of the 

 aedeagus it reminds us of Lampyrid forms. There is 

 nothing like this insect in the British Museum Collection. 

 It is quite Tclephor its-like in shape, but has a large, ivory- 

 like area on the pronotum, reminding one of the pallid 

 spaces of the luminous organs of Lampyridac, etc., but we 

 have no reason for supposing it to be luminous. 



Silis Tuficollis (PI. LXIV fig. 140). 



Median lobe short, wide, somewhat cone-shaped, broader at the 

 distal than at the basal end. Tegmen complex, being in the form 

 of a shallow cup-like piece produced on dorsal aspect as two broad, 

 truncate lobes {II) which appear to represent the lateral lobes, and 

 the dorsal edge prolonged as a ridge (a). Internal sac large and 

 complex, with two diverticula at base on dorsal aspect studded 

 with minute spines, and with long chitinous spines at apex. The 

 basal part of the sac is not invaginated, only the apical portion. 



Telephorus {Rhagonycha) limlntus (PI. LXV fig. 141, 

 141a). 



Median lobe well developed, bulbous in form, with the median 

 orifice at distal end and a small median foramen at base. The teg- 

 men is of a complex nature and forms a complete cover for the 

 median lobe. There is a well developed basal-piece (bp) with two 

 large, truncate lateral lobes, meeting together on the ventral aspect 

 (II) ; on the dorsal aspect is a large plate (a) projecting as a bilobed 

 piece a little beyond the median lobe ; this appears to be a develop- 

 ment of the lateral lobes. The lateral edges of this plate are con- 

 solidated to the latero-dorsal portion of the median lobe ; on each side 

 is a second lobe which is connected with the dorsal plate (o) at its 

 base. The median lobe thus has no movement apart from the teg- 

 men. Internal sac large and complex. 



Telephorus (Bhagonycha) testaceus belongs to the same type as T. 

 Umbatus. 



