8 Psijche [February 



England.) Here, again, the same general type of chfetotaxy 

 prevails, the number and arrangement of sense cones and bristles 

 being almost identical. 



This disposes of all the characters used in the separation from 

 the Phloeothripidse of the genera allied to Eupathithrips, with the 

 exception of that of the long mouth cone. This character, however, 

 frequently varies in closely allied species of the same genus; and in 

 the genera grouping themselves about Liothrips, the mouth cone 

 is sometimes as elongate as here. 



These are, in detail, the reasons for the sinking of Bagnall's re- 

 cently diagnosed family Eupathithripidse as a synonym of the 

 Phloeothripidse. It will be seen that the twelve or thirteen differ- 

 ences given by him for the separation of this group are broken 

 down in a most interesting manner by the new genus described 

 below as Pselaphothrips, which is in nearly all respects intermed- 

 iate between Eupaihithrips Bagnall and Acanthothrips Uzel^; and 

 the last genus is very closely allied indeed to Phlorothrips Haliday, 

 the type of its family. Eupathithrips and its allies, then, for the 

 present, at least, are best considered part of a moderately large 

 complex represented by Phlccoihrips, Ecaccmthothrips and Sedii- 

 lothrips. The last two are the extremes of two different hnes of 

 specialization; and to separate either from the parent stem with 

 the rank of family would, I believe, be a step backward, and one 

 away from our ideal of a true phylogenetic classification. 



Genus Podothrips Hood. 



1913. Podofhrips Hood, Ins. Insc. Menstr., Vol. I, p. 67. 



Body depressed, glabrous. Head longer than wide, much narrowed toward base, 

 widest behind eyes, about equal in length to prothorax, evenly declivous in front; 

 cheeks nearly smooth, without spiniferous tubercles. Ocelli placed far forward, 

 the median one between basal segments of antennae; posterior ocelli widely separated. 

 Antennae eight-segmented, the last two segments not compactly united. Mouth 

 cone blunt, much shorter than its width at base. Prothorax about as long as head, 

 about twice as wide at base as at apex, lobed behind, with median dorsal thick- 

 ening, lateral outline concave, only the two pairs of bristles at posterior angles well 

 developed. Legs of moderate length, stout; fore femur nearly as long and broad 

 as head; fore tibia with a stout tooth at tip in both sexes; fore tarsus armed with a 



iKarny's Acanthothrips grandis described from Argentina (Zool. Ann., Vol. IV, p. 324, 

 1912), is almost certainly a Eupathithrips, though a more extensive description or an exam- 

 ination of the type specimen will be necessary before this point can be determined. There 

 is nothing in the description to exclude the speeies from Eupathithrips sihestrii (Buffa) . 



