1910. 19 



several days watching it. It is not easy to see this restless and minute inseet 

 while on the wing. It seldom stays for long in one place, but whenever we saw 

 it settle, we waited to see the burrow it entered, which was then marked with a 

 piece of straw. Several of these drew blank, as after a long wait no other 

 insect entered. Seven other marked burrows gave definite results, for in each 

 case a 9 Crabro albilahris returned and entered, some with prey. The ground 

 was so hard that we could not dig out the burrows and get at their contents. 

 But as all the burrows visited by H. coriacewm belonged to Crabro alhilabris, 

 and not to the other small Aculeates mentioned above, it is very probable that 

 C. albilabris is the host. There is a disparity in size between the two, but not 

 more than that between Hedychridium roseum and its host Astata boops. — 

 G. Arnold, University, Liverpool : November 15th, 1909. 



Crabro aphidum, Lep., in the Neiv Forest. — A ? of this rare species was 

 taken on a flower head of an umbelliferotis plant, in July this year, near 

 Brockenhurst. The yellow markings of the thorax are entirely wanting, but 

 Mr. Saunders kindly examined it and confirmed the determination. 



Owing to the absence of the yellow markings on the thorax, it looks 

 exceedingly like a 9 C. palmarius, but, under a lens, the excavated 6th dorsal 

 valve distinguishes it at once. — Id. : November 17th, 1909. 



Note on the geographical distribution of certain Trichoptera. — In the ciu'rent 

 number of the Ent. Mo. Mag., xlv, p. 239, Mr. Morton, referring to the Tricho- 

 pterous Family Calamoceratidse, mentions its occurence in the Iberian Peninsu.la. 

 McLachlan, shortly before his death, while I was in Algeria, asked me to figtu-e 

 some details of Trichoptera, and express an opinion as to the systematic position 

 of a single S fly labelled, " Nicolaijefsk, Amur, 16, vii." I determined this to 

 be a representative of the Calamoceratidm,^-a. view which he at first qiiestioned, 

 but finally adopted. I still possess one of its maxillary palpi, which I moiuited 

 in Canada balsam as a microscopical pi-epaiation. My drawings of details of 

 this insect, together with others of New Zealand Trichoptera (a Helicopsyche 

 among them), were probably consigned to the waste-paper basket after 

 McLachlan's death. I sent him all the " Neuroptera " obtained by me in 

 Algeria. His illness prevented him from describing several novelties, and 

 from recording my latest captures. One of these was the Trichopteron, 

 Chimarrha marginata, found at a cool stream near Hammam Meskroutine. — 

 Alfred E. Eaton, West House, Symondsbiuy, Bridport : October 23rd, 1909. 



Charles Darwin and the Origin of Species : Addresses, &c., in America 

 and England in the year of the two Anniversaries. By Edward Bagnall 

 Poulton, D.Sc, M.A., F.E.S., &c., &c., Hope Professor of Zoology in the 

 University of Oxford. London : Longmans, Green & Co., 39, Paternoster Row : 

 November 24th, 1909. 



