134 TERRESTRIAL FAMILIES OF II KMl PTEKA-ll KTKROI'TERA 



to "allxjf the abdiiminal spiracles not situated ventraliy, at least those of the third and fourth 

 segments dorsal"; for, as is indicated in the table, the spiracles on the second sei^inent of 

 Hcncstaris are ventral, so that the original statement that at most only the last three 

 spiracles are ventral is incorrect. 



3. In the Hetcrogastrinae, Pachygronthinac, Arthcncinae and Oxycareninae all the 

 spiracles are usually said to be ventral. In Oxycarcnus and Chilacis, however, those of the 

 second segment are dorsal. The emended key character dehning this group of subfamilies 

 should therefore run "'all or at least the live posterior abdominal spiracles situated ventrally." 



4. In the Chouliopimic and Mctrarghuie, subfamilies not examined by Stal or Barbour, 

 all the abdominal spiracles are dorsal. The Mctrargiuac were stated by Kirkaldy (1902), 

 in erecting the subfamily, to be allied to the Cyiiiinac, but to have the last three abdominal 

 spiracles placed ventrally. Later he concluded (1908) that the subfamily was more probably 

 allied to the Ox\careninac. It is probable that Kirkaldy mistook three prominent pairs of 

 trichobothria for ventrally placed spiracles in uncleared material. In reality the aflinilies of 

 this peculiar Hawaiian subfamily with the Cyiiihuic are great, the chief differential character 

 being that in the Metrarginac, unlike any other member of the family, the hamus of the alar 

 areole is "continuous, extending from the vena subtensa upwards In the ujjper vein" (Kirkaldy, 

 1902). 



5. The Aplia)iiiuu (Rhyparocliroiniiiae) have never been separated on spiracular char- 

 acters and show great diversity in this respect. The Myodocharian arrangement as exempli- 

 fied by Orthaca is similar to that obtaining in the Blissinae, while in the Lcthacaria and in 

 Plinthisns an entirely ventral arrangement is found as in the Hclcrogastrinae and Pachy- 

 gronthinac, and an almost identical pattern is found in Clerada. On the other hand the 

 arrangements with the spiracles of the third and fourth segments alone dorsal or dorso-lateral 

 as in Aphanus and RhyparocliromiiS, or with only those of the fourth segment dorsal as 

 exemplified by the Gonionotaria, are not found outside the Aplmninae. In conclusion it 

 would seem that although the position of the spiracles may be of great value in the construction 

 of artificial keys and in determining the relationships of individual genera and tribes, too 

 much stress must not be laid on so variable a character in determining the natural subdivisons 

 of the family. 



Family ANTHOCORIDAE 



Tribe Anthocoraria 



8. Ectemnus paradoxus sp. n. 



Color. Head, pronntum, scutellum and ventral surface l)iack; eyes and (xelli dark 

 vinous; first antennal joint black, second yellow with a little black ba.sally and the extreme 

 apex greyish-black, third yellow, narrowly black apically, fourth black, slightly paler basally. 

 Elytra with fine sparse pale golden pulx?scence, clavus brown, its inner margin ])aler and outer 

 margin darker than the disc, corium and embolium basally lacteous, apically i)iceous, extreme 

 apex of corio-embolial suture, in the neightourhood of the anterior margin, hyaline, cuneus 

 piceous black, membrane opaque lacteous with a large central and a still larger sub-apical 

 spot greyish-black, the areas around and Iietween the spots luteous; femora black, tibiae ])ale 

 testaceous, their apices somewhat darker, tarsi greyish-black. 



