1 2 [January, 



OS PLAGITEMTSUS : A HAWAIIAX GENUS OF LONGICORN 

 ^ COiE'OPr^iZ^.— SUPPLEMENT. 



Br D. SHARP, M.A., F.E.S. 



Since the previous descriptions of the species of PlagitTimysics 

 were written I have received from Dr. Gestro, of the Genoa Museum, 

 another distinct form, discovered by the distinguished Italian traveller. 

 Signer d'Albertis, upwards of twenty years ago. 



Plagitiimysus Albeetisi, n. sp. 



Gracilis, fusco-7'ufus, lirothorace femoribusque nigrieantihus. his basi tes- 

 taceo : elytris parum ornatis, sordide testaceis, undique dense punctatis, ad 

 suturam tantum obsoletius albido-lineatis, ante lineas vage fuscescentibus. 



Long., 13 mm. 



Of the form of P. varians, but distinguished by the vague coloration, which has 

 a peculiar faded appearance. Antennaj red. Head red, more or less suffused with 

 black. Thorax black above, dull, tlie usual bands of white pubescence excessively 

 indistinct though broad ; on each flank a definite, shining, impunctate space. Elytra 

 narrow, densely punctate, without any glabrous area ; close to the suture there may 

 be detected on each a very faint line of white pubescence, diverging before reaching 

 the base ; in the fork formed by the divergence of the two lines there is a more or 

 less indistinct dark area. Legs very long, tibiee obscure red, the posterior pair 

 coarsely hirsute. 



West Honolulu ; February 25th, 1874. Signer d'Albertis, 

 Three male individuals. Some time ago another individual of the 

 species from the same source was sent to me to be named by Frere 

 Belon, of Lyons, 



In the characters of Plagithmysus, given in the previous volume, 

 there is a serious verbal error : — on p. 238, line nine, the word " thick " 

 occurs twice ; the second occurrence is erroneous ; instead of " longer 

 than the basal thick part," it should run, "longer than the basal part." 



Cambridge : December, 1896. 



ON COCCUS AO AVIUM, Douglas. 



BY R. NEAVSTEAD, F.E.S. 



Coccus (Gymnococcus) aqavium, Doug. 

 I feel sure this interesting species should be placed in the genus 

 Ripersia ; but at the same time the highly chitinised antennae of seven 

 joints, and the somewhat unique structure of the anal ring are 

 abnormal ; I have not seen a similar structure in any Dactylopid 

 hitherto examined. 



