178 [January, 



NOTE ON CERATINOSTOMA MARITIMUM. 

 BY E. H. MEADE. 



Since my description of this Dipteron appeared in the last number 

 (December, 1885) of this Magazine, my friend, Herr Eoder, of Hoym,* 

 has informed me that he has taken this insect on the sea-shore at the 

 island N'ordeney, and believes it to be identical with the Scatophaga 

 oceana, of Macquart, who described and figured it in 1838 in the 7th 

 vol. of the Annales de la Societe entomologique de France. Mac- 

 quart's description is very short, so I will transcribe it : — 



" Scatophaga oceana, Nob. 

 (PL xi, fig. 2). 

 Obscure virescens, palpis Jlavidis ; antennis nigris, stylo hirsuto ; pedihus 

 nigris. Long., 3 lin., -\. 



Face blanche ; thorax a quatre bandes brunes ; les deux laterales contigues, une 

 tache grise sur la suture ; ailes hyalines, nervures longitudinales et trausTeraales 

 bordees de brunatre pale. (La plage de Dunkerque)." 



He adds that this fly is less hairy, has the forehead less promi- 

 nent, and the third joint of the antennae, together with the style, 

 shorter than in the ordinary species of Scatophaga, in all which 

 respects it will agree with C. maritimum, but he says nothing about 

 the shape of the male abdomen, and seems to have described and 

 figured a female specimen only. In the Wiener entomol. Zeitung, 

 vol. iii, p. 290, Herr Eoder published some remarks upon the synonymy 

 of Scatophaga oceana, Macq., in which he says that he considers it to 

 be identical with Scatomyza horealis, Zett., and Scatophaga ostiorum, 

 Hal., which last was very briefly described in Curtis' " British Ento- 

 mology." 



Assuming that these opinions are correct, my name of maritimum 

 must be superseded by that of oceanum, but the remarks which I made 

 in my paper upon the necessity of forming a new genus for the re- 

 ception of this species will remain in force, and the synonymy will stand 

 as follows : — 



Ceeatinostoma, Meade. 



oceana, Macq. (^Scatophaga). 

 ostiorum, Hal. 

 horealis, Zett. {Scatomyza). 

 maritimum^ Meade. 

 Bradford, Yorks. : 



December, 1885. 



* Who is noted for having one of the largest collections of Diptera iu Europe. 



