RHYNCHOTA. 
535 
the necessary indications of their typical species. A good many 
new species are described. The paper forms to a certain extent 
a supplement to the ^ Hemiptera Africana.^ 
* Anatomical and Physiological Papers. 
Balbiani. On the Reproduction and Embryogeny of the 
Aphides. Comptes Rendus^ June 1866, pp. 1231-1234, 
pp. 1285-1289, and pp. 1390-1394. Translated in Ann. & 
Mag. Nat. Hist. 3rd ser. vol.xviii. pp. 65-69 &pp. 106-109. 
In these papers Balbiani maintains that the viviparous 
are true hermaphrodites. 
Dohrn, a. Zur Anatomic der Hemipteren. Stettiner entom. 
Zeitung, 1866, pp. 321-352, Tafel 4. 
This paper, which is a German translation of the author^s 
Latin inaugural dissertation, contains a general account of the 
anatomy of the Heteroptera from personal examination. It 
treats in considerable detail of the structure of the generative 
organs, the copulatory parts of which are of much significance 
in classification. The author thinks that variations in the 
structure of these parts have much to do with the production of 
new species, in accordance with the Darwinian hypothesis. 
Kunckel, J. Recherches sur les organes de secretion chez les 
Insectes de Fordre des Hemipteres. Comptes Rendus, 
tome Ixiii. pp. 433-436 : September 1866. Abstract in Ann. 
& Mag. Nat. Hist. 3rd ser. vol. xviii. pp. 427-4-28. 
In this paper Kunckel describes the salivary and odoriferous 
glands of the Heteroptera. The inferior salivary glands are 
distinct from the superior, and not, as Leon Dufour supposed, 
reservoirs for their secretion. The secreted fluid is slightly 
alkaline. The odoriferous glands in the larvae and pupae are 
said to be situated in the dorsal region ’of the abdomen, where 
their presence is indicated by horny shields, in which the 
ostioles open. 
Landois, Leoxvard. Untersuchungen fiber die auf dem Men- 
schen schmarotzenden Pediculinen. I. Anatomie des Phthi- 
rius inguinalis, Leach. Zeitschr. wissensch. Zool. xiv. pp. 
1-26, Tafeln 1-5 ; and II. Historisch-kritische Untersuch- 
ungen fiber die Lausesucht. Ibid. pp. 27-41. III. Ana- 
tomie des Pediculus vestimenti, Nitzsch. Ibid. xv. pp. 32-55, 
Taf. 2-4 (1865). IV. Zur Anatomie Pediculus capitis. 
Ibid. pp. 494-503, Taf. 38 (1865). 
Mecznikow, E. Untersuchungen fiber die Embryologie der 
Hemipteren. Vorlaufige Mittheilung. Zeitschrift ffir wis- 
sensch. Zoologie, xvi. pp. 128-132 : 1866. 
. Embry ologische Studien an Insecten. Ibid. pp. 389-500, 
Taf. 23-32. 
