70 
Psyche 
[June-Sept. 
Champion’s specimen for me and writes that he thinks it is 
undoubtedly a $ , with apical abdominal segments and 
mesosternum between the coxse formed as in $ $ of allied 
genera. Actually the $ of Psephenops, as shown by my 
P. haitianus (below), has slender tarsi and differs from the 
$ rather strikingly in its larger size and differently formed 
prothorax. It happens that there is an insect, Xexanchor- 
inus latus Grouv., described from the exact locality of one 
of the types of Psephenops smithi, which differs from the 
latter about as my $ Psephenops haitianus differs from the 
$ . Mr. Blair has compared Xexanchorinus latus with 
Psephenops smithi (types of both in British Museum) and 
writes that the antennse of the two are similarly constructed 
and the elytral sculpture much the same. Judging from the 
sketches in Mr. Blair’s letter, the dimorphism of the pro- 
thorax is about as great as in the Haitian species, and I am 
convinced that Psephenops smithi is the $ and Xexanchor- 
inus latus the $ of one species. The former name has page 
priority as to both genus and species. 
In accordance with these conclusions, and taking into 
account the peculiar heteromerous structure of the $ tarsi 
in P. haitianus, the secondary sexual characters of Psephe- 
nops are these : $ smaller and narrower than $ , with nar- 
rower and more rounded prothorax which is less explanate 
at the sides; mesosternum between middle coxse very nar- 
row in $ , much broader in $ ; $ with 7, $ with 6 ventral 
segments conformed as usual in Psepheninse; dimorphism 
of antennse and palpi less than usual in subfamily ; $ with 
first and second joints front and middle tarsi and either 
first and second or only first joint of hind tarsus dilated 
and conspicuously lobed below, with densely pubescent soles ; 
9 with slender and simple tarsi. It will be noted that all 
of these secondary sexual characters are either foreshad- 
owed or duplicated in Psephenus or Pheneps or both, and 
that sexual dimorphism of the prothorax occurs also in 
some species of Phanocerus. 
3. Psephenops smithi Grouvelle $ 
( Xexanchorinus latus Grouvelle ( $ ) ) 
L. c., pp. 45 & 46. 
Grenada and St. Vincent. The type locality of X. latus is 
