TITLES. 
Ins. 47 
721. Saunders, E. Catalogue of British Hymenoptera ( Aculeata ), 
Perth : 1890, 8 pp. 
722. . On the Tongues of the British Anthopliila. J. L. S. xxiii, 
pp. 410-432, pis. iii-x. [Hymenoptera.] 
723. . Aculeate Hymenoptera collected by J. J. Walker, Esq., at 
Gibraltar and in North Africa. Part i, pp. 201-205 ; pt. ii, pp. 289- 
291. Ent. M. M. (2) i. 
724. Saunders, E., & Edwards, J. Catalogue of British Ilemiptera : 
Heieroptera by Edward Saunders ; Homoptera by Jas. Edwards. 
Perth : 1890, 16 pp. 
725. Schaffer, C. Ueber die Bauchdriisen der Raupen. Zool. Anz. 
xiii, pp. 9-11. [ Lepidoptera .] 
726. Schaufuss, C. Ein neuer Pselapliid. Ent. Nachr. xvi, p. 139. 
[ Coleoptera .] 
727. Schaufuss, L. W. System-Schema der Pselaphiden , ein Blick in 
die Yorzeit, in die Gegeuwart und in die Zukunft. Tijdschr. Ent. 
xxxiii, pp. 101-162, pis. ii-vi. [ Coleoptera .] 
Chiefly occupied with species found in amber on the coasts of the 
Baltic sea : these are much more numerous than the species at present 
living there. 
728. . Eine Staphylinen-gattung aus dem baltischen Bernsteine. Ent. 
Nachr. xvi, p. 69. [ Coleoptera .] 
729. . Zwei neue Wasserkafer-Arten. T. c. p. 62. [ Coleoptera .] 
730. Sciiaus, W., J r. New species of Mexican Lepidoptera. Ent. Am. vi, 
pp. 18-20 & 45-47. 
731. . Description of Eterusia urania , n. sp. Ent. Am. vi, p. 39. 
[Lepidoptera.] 
732. Schevyrew, I. Liste des espece du genre Scolytus de la collection 
de l’Academie Imperiale des sciences de St. Petersbourg. Bull. 
Ac. Pet. xxxiii, pp. 469-471. [ Coleoptera .] 
733. Schilde, J. . Schach dem Darwinismus. Berlin : 1890, 360 pp. 
A criticism of the theoretical views of some entomological Darwinians. 
The work forms vol. xxxiv of B. E. Z., though it is not so stated on 
the title-page. 
734. Schimkewitsch, W. Sur la signification de Cellules Vitellines chez 
les Tractates. Zool. Anz. xiii, pp. 399-404. 
Relates to the development of the mesenteric cavity. 
735. Schletterer, A. Die Bienen-Gattung Dasypoda t Latr. B. E. Z. 
xxxv, pp. 11-56, pi. i. [ Hymenoptera .] 
736. . Die Gruppe der Hymenopteren- Gattungen Leucospis, Fab., 
Polistomorpha , Westw., und Marres , Wlk. T. c. pp. 141-302, 
pis. v & vi. 
