TITLES. 
las. 39 
590. [Packard, A. S.] Hints on the evolution of the bristles, spines, 
and tubercles of certain Caterpillars, apparently resulting from a 
change from low-feeding to arboreal habits ; illustrated by the life- 
histories of some Notodontians. P. Bost. Soc. xxiv, pp. 494-561, pis. 
iii & iv. [Lepidoptera. - ] 
Summary in J. R. Micr. Soc. 1890, p. 711. 
591. . The life-history of Drepana drcuata, with remarks on certain 
structural features of the larva, and on the supposed dimorphism of 
Drepana arcuata and Dryopteris rosea. T. c. pp. 482-493. [Lephlo- 
ptera .] 
592. . Notes on the early stages of two Sphingidce. Psyche, v, 
pp. 396-401. \_Lcpidoptera.\ 
593. Pagenstecher, A. Beitrage zur Lepidopteren- Fauna des Malayis- 
chen Archipels. vi. Ueber Schmetterlinge von Ost-Java. JB. 
Nass. Yer. xliii, pp. 95-110. 
594. . Heteroceren der Insel Palawan. Deutsche e. Z. Lep. iii, 
pp. 1-33. \Lepidoptera.'\ 
595. Pankratii, 0. Das Auge der Raupen und Phryganidenlarven. 
Z. wiss. Zool. xlix, pp. 690-708, pis. xxxiv & xxxv. 
He disagrees with many of Landois’ observations, and says these eyes 
are simple eyes, not compound ocelli. The caterpillar used was Gastro- 
pacha rubi. The Trichopterous insect is not named. Summary in J. R. 
Micr. Soc. 1890, p. 450. 
596. Pantel, P. J. Notes Orthopt&rologiques. An. Soc. esp. xix, pp. 
335-422, pis. iii & iv. I. Revision monographique du genre Gryllo- 
morplia , Fieb. II. Les Phasmides d’Europe et des pays limitrophes. 
iii. Les Orthopt&res des environs d’Ucles. 
597. Patten, W. Is the Ommatidium a Hair-bearing Sense Bud? 
Anat. Anz. v, pp. 353-359. 
Summary J. R. Micr. Soc. 1891 , p. 32. 
598. Pedasciienco, D. Sur la formation de la bandelette germinative 
chez Notonecta glauea. Rev. Sci. Nat. Pet. i, pp. 358-362. 
599. Perez, J. Hermann Muller et la coloration de l’appareil collecteur 
des Abeilles. Mem. Soc. Bord. (3) v, pp. 239-249. [ Hymenoptera .] 
He considers, from an examination of 500 species, that Muller’s views 
on this point are erroneous. 
600. . Sur la Faune apidologique dti sud-ouest de la France. C.R. 
cxi, pp. 991-993. 
Remarks on geographical distribution. 
601. . Catalogue des IVtelliferes du sud-ouest. Act. Soc. L. Bord. 
xliv, pp. 133-192. \Hy?nenoptera.'] 
Preceded by a discussion on the geographical distribution of bees. 
