TITLES. 
Ins. 35 
502. Heymons, R. Die Embryonalentwicklung von Dermapteren und 
Orthopteren unter besouderer Beriicksichtigung der Keimbliitter- 
bildung, monographisch bearbeitet. Jena : 1895, 4to, vi & 13G pp., 
12 pis., 33 cuts. 
Summary by author, Zool. Centralbl. ii, p. G51. 
503. . Die Segmentirung des Insectenkorpers. Anbaug zu Abb. 
Ak. Berlin, 1895, 39 pp., 1 pi. 
Summary by Yeriioeff, iu Zool. Centralbl. ii, p. 592. 
504. IIodoe, C. F. Changes in ganglion cells from birth to senile death. 
Observations on man and honey-bee. J. Physiol, xvii, pp. 129-134. 
505. Holland, W. J. Two new African Lycainids. Ent. News Pbilad. 
vi, pp. 16G & 167. [Lepidoptera.] 
50G. Holmgren, E. Die trachealen Endverzweigungen bei den Spinn- 
driisen der Lepidopteren\i\rvzr\. Yorlaufige Mitteilung. Anat. 
Anz. xi, pp. 340-34G. 
Summary, J. R. Micr. Soc. 1896, p. 182. 
507. Hopkins, A. D. Notes on the habits of certain Mycetophitids , with 
descriptions of Cpidapus scdbiei , sp. nov. P. ent. Soc.W ashington, iii,^ 
pp. 149-159. [Diptera.] 
508. Hopkins, F. G. The pigments of the Pier ides : a contribution to 
the study of excretory substances which function in ornament. 
Entomologist, 1895, pp. 1 & 2. [Lepidoptera.] 
509. . Tho pigmonts of tho Tieridas : a contribution to the study 
of excretory substances which function in ornament. [Abstract.] 
P. R. Soc. London, Ivii, pp. 5 & G. [Lepidoptera.] 
Summary, J. R. Micr. Soc. 1895, p. 1G8. 
510. . The pigments of the Pieridce. Phil. Trans. 18G P, 
pp. 661-G82. [Lepidoptera.] 
511. Hormuz aki, C. vf Bemerkungen uber Varietliten einiger in der 
Bukowiua einlieimischer Grossschmetterlinge. Yerh. Ges. Wien, 
1895, pp. 225-254. [ Lepidopterci.\ 
512. Horn, G. II. Coleoptera of Baja California. Supplement i. 
P. Calif. Ac. v, pp. 225-259. 
513. . Studies in Coccinellidce. Tr. Amer. ent. Soc. xxii, pp. 81-114. 
[Coleoptera.] 
514. Horn,W. Zwolf neue CicindelidetiSpecies. Deutsche ent. Zeitsclir. 
1895, pp. 81-93. [Coleoptera.] 
615. . Weiteres liber die Familie der Cicindeliden. T. c. pp. 94-102. 
[ Coleoptera .] 
51G. . Novre Cicindclidarum species. T. c. pp. 353-3G1. [Coleoptera.] 
517. *. On a new species of the family Cicindclidce from Argentinia. 
Notes Leyden Mus. xvii, p. 15. [Coleoptera.] 
