Insecta. 23 



der hypothetischen gemeinsamen Urform näher stehen und in gewissem Abstand 

 sich populi und ocelkita anschließen, ohne damit behaupten zu wollen, daß letztere 

 aus ersteren unmittelbar hervorgegangen sind. Eckstein (Ebers walde), 



75) Liiderwaldt, H., Zur Biologie von Stenoma dissimilis Kearfott Farn. Ti- 

 neidae. In: Zeitschr. f. wiss. InB.-Biol., Bd. 8, Heft 1, S. 5—6, 1912. 



Die 12 mm lange grüne, braunköpfige, weißbehaarte Raupe lebt von Januar bis 

 März an Ccdrala fissüis Vel. zwiscben zusammengesponnenen Fiederblätteben. Fraß, 

 Kotablage werden beschrieben. Puppe zwischen versponnenen Blättern. Puppendauer 

 12 Tage. Eckstein (Eberswalde). 



76) Sharp, D. and Muir, F., The Comparative Anatomy of the male 

 genital tube in Coleoptera. In: Trans. Ent. Soc. London, Heft 3, S. 477 — 

 642, Taf. 42—78, 1912. 



The object of this extremely important work is, in the authors' opening 

 words "to review the structure of the male genital tube throughout the order 

 Coleoptera". It is not equivalent to a Complete review of the male copulatory 

 Organs, since it does not take into consideration the very varied modification of 

 the abdomen itself. It commences with (I) an Introduction, followed by (II) 

 a section on Orismology and Technique, in which also the special terms used 

 are fully explained. Section III is headed "Morphology" and includes the bulk 

 of the work. It is divided into two parts (a) "Anatomy" (pp. 486 — 600) and (b) 

 "General Morphology" (pp. 600 — 608). The anatomical portion gives the de- 

 tailed results of investigation of over 100 families of Coleoptera, dealt with in 

 turn: under each family are given the names of the form or forms examined, 

 and detailed accounts of the structure of the genital tube in those forms, the 

 structures being figured in the majority of cases. The morphological section is 

 followed by sections on (IV) Function (pp. 609- — 613) and (V) Taxonomy 

 and Phylogeny (pp. 613—639). 



General Morphology. A glance at the Plates is sufficient to show the 

 bewildering multiplicity of forms which the male genital tube assumes, yet the 

 fundamental plan of it is simple. It is a doubled tube, invaginated into itself, one 

 end being continuous with the body-wall while the other divides into two bran- 

 ches running to the testes. It may be roughly likened to a glove in the tip of 

 one finger of which a hole is pierced, while a slender tube is attached to this 

 hole inside the finger and is continued into the hand-part of the glove (Intro- 

 duction, p. 480). The "finger" represents the outer portion of the tube, conti- 

 nuous with the body-wall at its base, while the slender tube represents the in- 

 vaginated portion, continued into the abdomen (the hand-part of the glove) and 

 dividing into two branches to the testes. The arrangement is exceedingly protean, 

 and lends itself with ease to modification in many ways: the outer portion of the 

 tube can be invaginated into the abdomen (i. e., the finger drawn into the band 

 of the glove) so tliat its distal orifice becomes proximal: it can be niade to col- 

 lapse in several layers, like a telescope: hard sclerites can be developed on the 

 outer portion and can assume very many different forms etc. This combination 

 of the parts — whatever their form — into a perfect, doubled tube without 

 orifices, is remarkable: the one orifice present arises from the invagination of the 

 tube into itself, and may at one moment be near the centre of the insect's body, 

 while at another it is far away outside the body at the extremity of the extended 

 tube (p. 601). 



The tube consists of (I) the zygotic portion, i. e. the pair of ducts lea- 



