2 PSELAPHIDZ. 
of Motschulsky’s should never have been followed by any proper description of the 
objects mentioned and named therein. It is quite clear that he could not have made 
a proper study of these minute creatures on board ship between Colon and New 
Orleans, where his letter was written ; and, so far as we know, he never returned to 
their study except to sketch the rude outline figures I have alluded to. Although 
some of these insects have become disseminated to a small extent under Motschulsky’s | 
names, but little value can be attached to these “typical” examples. In the case of two 
of these names Reitter has had an opportunity of testing them, and finds they were 
incorrectly applied by Motschulsky ; in short, Motschulsky not only failed to describe 
the species he gave names to, but actually did not even discriminate them. 
For these reasons I think the authors of the Munich Catalogue did right in refusing 
to recognize these names, and certainly Reitter has done all that courtesy and consider- 
ation demand when he treated those that were accompanied by figures as entitled to 
validity. 
Subfam. CTE NISTINAL. 
Group CTENISTINA. 
DESIMIA. 
Tetracis, Sharp, Ent. Monthly Mag. xi. p. 79 (1874) (nom. przeoc.). 
Desimia, Reitter, Verh. Ver. Briinn, xx. p. 184 (1882). 
This genus has hitherto consisted of four or five African species; but in addition 
to the insect now added to it from our fauna I have still another in my collection 
from the Amazon valley, so that the genus is probably well represented in the New 
World. 
1. Desimia dispar. (Tab. I. fig. 1,2.) 
Rufescens, elytris sanguineis ; antennis articulis ultimis elongatis ; prothorace subtransverso, basi in medio 
pubescente-foveolata, utrinque dense pallide pubescente; elytris apice dense pallide pubescentibus, stria 
suturali aliaque discoidali integris. 
Long. 14 millim. 
Hab. Mexico, Cordova (Sallé) ; GuateMALA, Paraiso 300 feet (Champion). 
Antenne dissimilar in the sexes: in the male, joints 4—7 very small, the eighth joint 
very elongate and as long as the five or six preceding it, the ninth considerably shorter than 
the eighth, the tenth nearly as long as the eighth, the terminal joint stouter and rather 
longer than the eighth; in the female, joints 4-7 not quite so small, the eighth joint 
similar to the seventh, the ninth as long as the preceding two together, the tenth rather 
broader and longer than the ninth, the terminal joint stouter and a good deal longer 
than the tenth, the three terminal joints together equal in length to the six or seven 
preceding. Head with the antennal tubercles quite connate, prominent ; indistinctly 
