20, 5 Cushman: Oriental and Australian Ichneumonide 581 
as probably belonging to this genus and material of two species 
from the Philippines. Because the color has as a rule been more 
carefully described, practically all of the characters used are 
color characters. It should be noted, however, that the color, 
especially of the thorax, is variable in both sexes. There 
seems very little reason to doubt that several of the species 
will have to sink into synonymy. Thus I strongly suspect that 
_jacobsoni and bidentatus of Szépligeti will prove to be synony- 
mous with metathoracica (Ashmead), as striatus (Ashmead) 
undoubtedly is. 
Key to the species of Syrites. 
a. ee: SiG... ee PEE S552 BALE Re te Eg OR BRE RTS A ERA ARE SD 
2 
PAM BAGS sccsst. Fert PA og eee pea ttate a, 
2. Abdominal spines on fourth tergite..........2222.....-- Sea 9 
4 
5 
6 
Abdominal spines on third tergite.................. ies To ogy 
4. Thorax ferruginous and black.. gieaatiny vaca ptaieabsaacel catty 
Thorax usually entirely black........... BTA PML WOE HO OBR 
5. Mesopleura ferruginous. 
(Camptolynx) froggatti (Turner). (Australia.) 
Mesopleura black............ (Hemigaster) jacobsoni (Szépligeti). (Java.) 
6. Only the first tergite pale; mandibles black; propodeal spiracles rather 
POS Sl ae ee S. acanthogaster Tosquinet. (Sumatra.) 
Both first and second tergites pale; mandibles pale; propodeal spiracles 
small. 
(Astomaspis) metathoracica (Ashmead) (=Bathythrix striatus 
Ashmead). (Philippine Islands.) 
7. Thorax black . (Camptolynx) ruficornis (Turner). (Australia.) 
Thorax ferruginous or partly so... 8. 
8. Hind tibia with a distinct pale annulus in the middle, second and third 
tergites each with a narrow transverse subapical furrow, which with 
a reversely curved basal furrow set off a distinct median area, 
§. arealis sp. nov. (Philippine Islands.) 
Hind tibia without such an annulus; transverse furrow of second and 
third tergites broad and shallow, basal furrows obsolete 
9. Both front and hind wings with fuscous band. ; 
(Camptolynx) froggatti (Turner). ( Australia.) 
Only the front wings maculate....... enmeytivtuvedeonanennaeTshusdlneenbeee 10. 
10. Front wing clouded from base to basal vein. 
(Hemiteles) bidentatus (Szépligeti). (Java.) 
Front wing hyaline at base.....-...--.---------- . Ul. 
11. Hind tarsus narrowly pale at base. 
(Camptolynx) striatus (Cameron). (Ceylon.) 
12. Thorax black before, ferruginous behind; clypeus 
stramineous below. lagu 
(Astomaspis) metathoracica (Ashmead). (Philippine Islands.) 
