140 (db. a. C. OUDEMANsX list of dutch ACA-EI. 



Crust. Myr. Ar. 39. 22). But as Hübner already made a genus 

 with this denomination for some Lejndoptera, another name must 

 be used. Now Koch called a species of Eumaeus in one of his 

 figures (Arachnidensystem , III, 1842, tab. 10, f. 51) Leionotns, 

 but as Leionotus was already proposed by Kirby in 1837 for some 

 Coleoptera, and in 1840 by Bibron for Reptilia, Leioiwtus 

 too cannot be kept. Finally Mégnin wrote Emeus in his work 

 Les parasites et les maladies parasitaires p. 109. 



Laelaps KocH , 1836, (Deu. Crust. Myr. Ar. 4. 19). — Synonyms: 

 Leclaps Kolenati, 1858, Wien. Ent. Monats. II. p. 5., Leelaps , 

 KoLENATi, 1859 in Sitz. Math. Nat. CI. Kais. Akad. Wiss. Wien. 

 Vol. 35. p. 171. — 



{Celaeno grübe). — Koch, in 1836, created a genus Celaeno 

 (Deu. Cr. Myr. Ar. 3. 17). Nicolet, 1855, asserted (Arch. Mus. 

 VII) that it merely consisted of larvae (read nymphae) of species 

 of the genus Pelojis Koch , of earlier date , and therefore considered 

 Celaeno as a synonym of Pelops. Though Nicolet is wrong in 

 considering all the Celaeno'' s of Koch to be nymphae of Pelops 

 Koch, he is right in considering the genus G^/at??<!0 Koch to be syno- 

 nym to Pelops Koch, as Ce laetw spinosa Kocii, the type of the genus 

 Celaeno Koch, really is a nympha of a species of Pelops Koch. 

 Now Grube, 1859, refound Celaeno aegrota Koch and pointed out 

 that this form was not a nympha of a Pelops, but a Gamasid, 

 for which he reestablished the genus Celaeno. This genus conse- 

 quently is quite another one as that of Koch with the same 

 name. But Celaeno was already used for a genus of Mammalia 

 by Leach in 1822, and for one of Mollusca by Owen in 1844, 

 so that a new name must take the place of it. Kramer , in 1876, 

 made a new genus wliich he called Tradì ijnotm for two species 

 viz. Trachjnotus elongatus Kram. , and Tr. pi/riformis Kram. I have 

 found both Celaeno aegrota Koch and some Trachynotus, though 

 these last lack the so called eye-spots. I consider Trachynotus Kram 

 synonym to Celaeno Grube. But Trachynotus was already used three 

 times, viz. in 1829 by Latreille for some Coleoptera, in the 

 same year by Gravenhorst for Hymenoptera, and in 1862 by 



