42 IOWA STUDIES IN NATURAL HISTORY 
of this most variable of insects is given by Rehn and Hebard 
at the above cited reference. 
Many synonyms are recorded of this cricket. 
Genus Enpacusta Brunner 
Endacusta (?) sp. 
Ont adult male and a pair of immature specimens of a species 
of Endacusta were taken on Antigua in June. The genera in 
the group to which this gryllid belongs are to a considerable ex- 
tent based on the presence or absence of foramina on the anterior 
tibiz, or present on one or both sides, ete., characters probably of 
very little or no value and wholly undependable, in some cases 
being absent or present in the same species. On such characters 
the present insect runs out in Saussure’s keys to the genus 
Endacusta in the ease of the adult, that specimen having distinct 
foramina on the inner face of the fore tibie, but the nymphs of 
both sexes run to the genus Phalangopsis, having foramina on 
neither face of the tibie. There are males of Amphicausta 
annulipes in the collection of the National Museum with fora- 
mina on both faces of the tibie as there are supposed to be, and 
females of the same species, determined by Mr. Rehn, without 
foramina on either face. Thus there is, at present, such con- 
fusion in this group that it is thought best to consider the pres- 
ent form as an unknown species and refer it questionably to 
Endacusta, as the adult male appears to belong there. This 
adult has very short lateral pad-like tegmina, apically broadly 
rounded and of a leathery texture. 
Genus HETERECOUS Saussure 
Heterecous (%) dubius n.sp. 
This cricket is placed in the genus Heterecous with consider- 
able doubt, for if it really belongs here, it indicates that the 
genus was wrongly placed by its author, Saussure, among the 
non-musical forms, as the male has well developed stridulating 
organs. There is little doubt of the insect belonging to the sub- 
family Enopterine, the general facies being characteristic of the 
members of that group and the only feature at all at variance 
being the paucity of inter-spinal serrations on the posterior tibe, 
as noted in the following rather complete characterization: 
