Anatomy of the Male Genital Tnhe in ColcoiJtcra. 527 



base. Tegmen forming a ring-piece, the dorsal cap being broad, 

 short and bilobed at apex, the ventral portion of the ring being 

 produced into a strut. Internal sac undifiFerentiated. 



This type approaches the more generalised Coccinellidae 

 and Endomychidae. 



Family LATHRIDIIDAE. 



Forms examined : Lathridius lardarius Deg., England. 

 Corticaria pubcscens GylL, England. 

 Figs. 116 and 117 PL LXI. 



Lathridius lardarius (PI. LXI figs. 116, 116a). 



Median lobe small with median orifice at tip and median foramen at 

 base. Tegmen forming a large cap-piece, the distal part formed of 

 the consolidated lateral lobes, curved and pointed. The basal-piece 

 large, curved, and the basal corners produced into two short struts 

 (s). Internal sac undifferentiated. 



Corticaria pitbesccns (PI. LXI figs. 117, 117«). 



Median lobe short, with large median orifice which nearly divides 

 it into a dorsal and a ventral plate, a median strut (nis) proceeds 

 from the dorso-basal edge. Tegmen forming a small ring with a 

 large strut {tg) on the ventral side. Internal sac large, covered with 

 stout chitinous hairs. 



We cannot place this type near to any other in the 

 present defective state of our information. Corticaria and 

 Lathridius are so distinct that they can hardly be retained 

 in one family. 



Family ADIMERIDAE. 



Form examined: Adimerus crispatus Sh., St. Vincent. 

 Fig. 118 PI. LXIL 



A. crispatus ? (fig. 118). 



This is a trilobe form with well developed median lobe with 

 median orifice at apex ; lateral lobes embracing the sides of the 

 median lobe ; a large basal-piece, chitinous on ventral side. In- 

 ternal sac undifferentiated. It approaches the Mycetophagidae 

 and the Enarsus portion of the Colydiidae. The organ is very 

 minute, 



N N 2 



