234 
In Hemisphaerius moluccanus Wirk. (fig. 33) the periandrium 
is large and semi-membraneous; the penis forms a fairly large 
tube produced into two processes with a median process in the 
middle. This aedeagus is like the type found in the Ricaniidae. 
In Danepteryx sp. (fig. 21) the periandrium forms a small tube 
which fits tightly around the large, semi-cylindrical, curved 
penis. In Gelastissus histrionicus Kirk. (fig. 35) the perian- 
drium is a short, wide tube with the dorsal edge curved over 
at its apex; the penis is smaller and has two large, curved spines 
at the apex. In Aphelonema vespertina Wirk. (fig. 34) the peri- 
andrium is large and membraneous, while the penis is thin and 
curved. These few examples show the diversity to be found in 
the family, and indicate the necessity for a great amount of 
work before we shall be able to understand the relationship of 
the genera included within it. 
Melichar monographed the family in 1906, when he recog- 
nized ninety-five genera; since then several new ones have been 
added. The following division of the family is based on Meli- 
char’s work. 
1. (2) Tegmina short and only reaching slightly beyond the base of the 
abdomen, or exceedingly narrow, parchment-like, thick or opaque, 
seldom hyaline; wings absent or rudimentary....... Caliscelinae 
2. (1) Tegmina entirely covering the abdomen or the greater portion of it. 
3. (4) Clavus and corium not separated by a suture. Tegmina generally 
convex, thick, and the venation obscure......... Hemisphaerinae 
4. (3) "Clayus*separated= from corm by a suburese se) ee eel ie Issinae 
5. (6) Wings absent or rudimentary, not folded.......... Hysteropterint 
6. (5) Wings present, entire. 
Ac -°C8)" Wangs Swath rar sins - ene tee sare cie causes ce ie eee eee eine Issini 
8. (7) Wings with a deep cleft in the apical margin, the anal area very 
NPE) CE Ec, A oiate tpasane hel ito totests taper oe aks aime Ramee Cena scape eee Thiontini 
The genus 4Augila Stal would come into the Issini. It might 
be as well to make a separate tribe, or even subfamily of it. 
Danepteryx Uhler and Gamergomorphus Melichar would go 
into the Caliscelinae near to Alleloplasis Waterh. It might be 
more natural to consider the Caliscelinae as a tribe of the 
Issinae. 
