56 Mr. Westwood on the Genus ‘Ctenostomus. 
5. Ct. rugosum, elytris posticé levigatis, macula baseos apiceque 
laté pallidis. 
From Sturm’s figure and Dejean’s description of this last insect, it is 
evident that the central fascia and the apical spot are united. It may also 
be noticed that Klug’s specific character of Ct. trinotatum, is not 
sufficiently explicit, as it will also apply to Ct. ichneumoneum. Dejean, 
however, has corrected it and indeed Klug’s specific detailed description 
appears exact. 
From the variation in the description of the markings of Ct. trinotatum 
in the different authors, I think it not improbable (if the descriptions and 
figures be faithful) that two distinct species are confounded; since, from 
Klug’s description, and Fischer’s figure, it appears that the base itself 
of the elytra is pale yellow, while Dejean’s description and figure in the 
Iconographie des Coléoptéres, t. 2, f. 1, represent the basal spot as a 
distinct fascia « pres de la base.’ If my supposition, which is not an 
improbable one, be correct, Fischer and Klug’s insect will retain the 
name of trinotatum, and it will be specifically characterized as above by 
its * macula baseos;”” and it will be necessary to give a new name to 
the insect described and figured in the French works, 
Description of the Figures, (all more or less magnified. ) 
Tas. SUPP. XLI. 
Fig. 3. Ctenostoma ichneumoneum, Dej., 3 
a. .Labrum of the male. 
6. Ditto of the female. 
e. Apex of the elytra of the male. 
d. Ditto of the female. 
e. Underside of the terminal joints of the abdomen of the male. 
f. 
Ditto ditto of the female. 
g- Anterior tarsus of the male. 
h. Ditto of the female. 
i. Posterior part of the thorax and its appendages, and abdo- 
men of the male, with one of the elytra opened to shew 
the size of the wing. 
k. Head of either sex, shewing the relative size of the palpi 
