LXXV 



in the Gen. des Coléoptères, IX, pp. 82 and 83 was unable to add 

 any contribution to a knowledge of it. 



Horn in Trans. Ara. Ent. Soc, V, p. 150, says (speaking I believe 

 as the resuit of an inspection of atypical example in Sallé's collec- 

 tion) « Plagitlimysus pulvemlentiis Motsch. is distinct from any 

 species I hâve seen and appears to be a Neoclytus, and if so the 

 generic name of Motschoulsky has priority. » 



Some months ago my attention was attracted by the figures of 

 Motschoulsky, mentioned above, in the Bull. Mosc, 1845; I reco- 

 gnised thèse as very similar to some Hawaiian insects for which 

 I established the genus Glytarlus, Trans. Ent. Soc. Lond., 1878, 

 p 208; and I consequently entered on an investigation to find out 

 ail possible about this geims PlagitÎLmîjsus of Motschoulsky with the 

 resuit of discovering so much confusion that 1 hâve thought it useful 

 to publish the results of my observations and correspondence. 



The generic name Clytarlus Sharp is clearly a synonyme of 

 Plagitlimysus Motsch. and this latter should be adopted. 



The only exampîe of P. jmlverulentus Motsch. I can hear of as 

 extant and accessible is one in Sallé's collection, obtained from 

 Sturm's collection, this latter entomologist having received it from 

 Eschscholtz; although I hâve not been able to compare this insect 

 with my Clytarlus robustus it is I believe a species very closely 

 allied thereto but possibly différent. It certainly is not any other 

 species of Clytarlus known to me. As regards the locality « Cali- 

 fornia » given for P, puherulentus , I feel sure it is erroneous for 

 the foUowing reasons : 1 . AU that is authentically known of the 

 species of Clytarlus leads to the conclusion that they are peculiar to 

 the Sandwich islands; 2. Eschscholtz coUected in the Sandwich 

 islands as well as in California; 3. Neither this insect nor anything 

 at ail similar to it has since been found in California or anywhere 

 else except in the Polynesian islands. 



Passing to the second species included in the genus Plagitlimy- 

 sus viz. Clytus attenuatus Boisd. of this I believe there exists only 

 a single example, at présent in our National collection at Kensing- 

 ton. Boisduval, loc. sup. cit., in describing the species calls it 

 « Clytus attenuatus Dejean » and says « collection de M. Dejean » : 

 he give.s however as its habitat « Nouvelle Hollande ». Chevrolat 

 purchased Dejean's collection of Longicorns, and thus he says in 

 describing the insect « Collection de l'auteur » (i. e. Chevrolat). 

 The Chevrolatian collection of Longicorns was purchased for our 

 national use, and I hâve consequently been able with the assistance 

 of Mr. C. 0. Waterhoiise to examine this Dejeanian-Chevrolatian 

 example. The Dejeanian label has the writing now nearly illegible, 

 obliterated by the lapse of time, but Mr. Waterhouse was so kind 



