10 



intestine. The epithelial cells lining the intestine were found to be 

 club-shaped, and not cylindrical. They are naked and their distal ends 

 are provided with long slender protoplasmic processes instead of true 

 cilia. The so called pharynx is divided into two parts: I, a »cone sha- 

 ped depression (f of the integument homologous with the Poly clad 

 pharynx: and II, a »pharynx« homologous with the similarly named 

 structure of the Triclads. 



The water vascular system was found to consist of a single 

 tube the ventral limb of which opens to the outside on the ventral side 

 of the posterior end of the body. The smaller dorsal limb divides into 

 many smaller branches which were traced to the posterior end of the 

 body. The wall of the tube is lined with cubical ciliated cells. 



The brain consists of two lateral lobes made up of branched cells. 

 The posterior ends of the lobes are connected by a single commissure 

 which is made up of a feltwork of fibres. From the posterior end of 

 each lobe a lateral nerve runs to the posterior end of the body. 



The ciliated pits were found to be embedded in the anterior 

 ends of the brain lobes, and not connected with them by a branching 

 nerve. The walls of the pits are made up of a muscular layer and a 

 single layer of epithelial cells. Each of these layers are continuous 

 with the similarly named layers of the integument. The epithelial 

 cells of the pits are smaller than those of the integument. 



The dish shaped organs are connected by a short nerve di- 

 rectly with the posterior ends of the brain lobes. 



During asexual reproduction the septum between the mother 

 and bud is formed by a circular depression of the integument , and not 

 by a circular ridge on the intestinal wall. 



6. Über Sinnesorgane in den Tastern und dem ersten Beinpaar der 



Solpugiden. 



Von Dr. Ph. Bertkau, Bonn. 



eingeg. 10, October 1891. 



A. König übergab mir vor Kurzem vier männliche Solpugiden, 

 die er von seiner diesjährigen Forschungsreise in Tunis (Februar bis 

 Mai) zurückgebracht hatte. Dieselben gehören drei Arten an : Solpuga 

 [Gaetulia Sim.) ßav esc ens C. L. Koch (= Galeodes nigripalpis L. Du- 

 four), Galeodes graecus C. L. Koch und G. harbarus Luc. G. graecus 

 erwies sich seines mangelhaften Erhaltungszustandes wegen als ganz 

 unbrauchbar für eine Untersuchung der Weichtheile, dagegen ge- 

 statteten die beiden S.ßavescens und der Gal. harharus eine solche in 

 geringem Grade, und ich gebe hier eine vorläufige Mittheilung zu- 



