1886.] 17 



22nd I happcijcd to be at Ilayling Island, and as I was returning along the beach to 

 the ferry, I caught sight of a glistening black atom in a small hole in the sand, which 

 I at once saw was the long-sought Acritus punctum. By carefully examining my 

 own footprints in the sand made some two hours previously, I was rewarded by a 

 good series of the little creature. Acting on the experience thus gained, I tried 

 digging small holes as traps in the sand just above high water mark in the old 

 locality, on the Chesil Beach, and found the beetle in them not rarely on warm sunny 

 afternoons. It probably lives in the tidal refuse (which is here so mixed with sand 

 as to render its examination very difBcult), and comes out to fly in the hot sunshine. 

 I may add that my friend, Mr. Moncreaff, has since taken Acritus punctum at 

 Hayling Island, and has also found a specimen among his duplicates which he took 

 there in 1871.— James J. Waleer, H.M.S. Cherub, Portland : May lli!A, 1886. 



Peutarthrum Huitoni, Wall., at Portland. — I took two specimens of the very 

 local wood-feeding weevil, Pentarthrum Huitoni, on May 1st, crawling on a stone 

 wall in one of the villages in the Isle of Portland ; a most unexpected capture in 

 this almost treeless locality. — Id. 



Hote on the case, cfc, of Oxi/ethira costalis, Curt. — Mr. Bolton, of Birmingham, 

 in his endeavours to supply his subscribers with " living objects for the microscope," 

 has done good service in elucidating the life-histories of various minute Triohoptera, 

 i especially Hydroptilidce, the cases and larvffi of which he finds in his aquaria. My 

 friend Mr. Morton, of Carluke, has already detailed the habits of Agraylea multi- 

 punctata {cf. vol. xxii, p. 269) from materials supplied by Mr. Bolton. Another 

 problem has been solved. Mr. Bolton has, on more than one occasion, forwarded to 

 me a larva in a singularly-transparent flat case of a hroad wedge-shape, which, when 

 the larva is about to change to the pupal condition, is attached by its anterior angles 

 much in the same way as described for the four angles of the case of Agraylea. This 

 larva has produced Oxyethira costalis, the early conditions of which were unknown. 

 I hope Mr. Morton will hereafter be able to give a detailed account from materials 

 sent to him, and, therefore, regard this note as only preliminary. The transparency 

 of the larval case is so great that a micro-photograph received from Mr. Bolton fails 

 to define the outline at the broad end of the wedge. — E. McLachlan, Lewisham : 

 May, 1886. 



Tinodes dives, Pict., in Cumberland. — Among some Trichoptera taken by my 

 friend the Rev. A. E. Eaton, in Cumberland, in 1885, 1 find 2 S and 1 ? of T. dives from 

 Cross Fell and Ousby in June. As British it was, I think, known only from 

 Derbyshire, where the late Mr. Edwin Brown found it in 1868 {cf. Ent. Mo. Mag., 

 V, p. 277, recorded as T. Schmidtii, Kolenati), and where I found it in August, 1869. 

 On the continent it is a widely-distributed sub-alpine insect, frequenting weedy 

 streams -with comparatively warm water. The species of the genus Tinodes have 

 unicolorous wings ; but, as an exception, 1\ dives has a large spot of golden 

 pubescence on its black anterior wings, seldom visible in captured specimens owing 

 to rubbing, and from this latter cause it rejoices in a quantity of synonyms ; it also 

 rejoices in the possession of c? appendices of so peculiar a form as to render the 

 condition of the ])ubescence of no consequence so far as regards specific identification. 

 —Id. : 3Iarch Sist, 1886. 



