ex Journal of Comparative Neurology. 



No. 3, is obviously sensory, the terminal tufts of No. 4, are sup- 

 posed by the author to serve to supply muscular sensation and thus 

 to play an important part in accommodation. {Anaiomischer Anzeiger, 

 VIII, 17, p. 555. July, 1893. 



The Pineal aud Parietal Foramen in Recent Fish. 



Professor Klinckowstrom of Stockolm embraced the opportunity 

 afforded by a visit to Surinam to study the parietal foramen in the 

 curious armored fishes Callichthys asper and littoralis. The foramen 

 had already been described m the genera Dorcas, CLarias, Loricaria 

 and others by Bashford Dean. The resemblance between these struc- 

 tures and those found in the Paleozoic placoderms is startling. 



The author succeeded in sectioning the whole head in young 

 specimens which were completely decalcified and stained in toto with 

 borax carmin. The epiphysis consists of three parts: i. a proximal 

 tubular part communicating with the third ventricle, 2. a middle 

 thread-like portion connecting with 3. and spheroidal mass which gener- 

 ally looses its cavity. No true parietal nerve was found. The termi- 

 nal organ may be compared with the frontal fleck of Anura.^ 

 {Anaiomischer Anzeiger. VIII. 17.) 



Pacini's Corpu.scles in the Trunk of the Tibial Nerve. 



It has been known for some time that these bodies occur not only 

 in the superficial regions but also in the nerves in the bones and jomts, 

 in sympathic nerve plexi and in the arterial walls. Dr. Askanzy'^ now 

 describes them from the up^r part of the tibial region of an am- 

 putated human limb. They lie in the epineureum, either superficially 

 or in a deeper part of the stem. 



The Sensory Nerves in the Skin of the External Genital Organs.^' 



This author, who is continually adding to the remarkable evi- 

 dences of his skill and industry, has given us a beautifully illustrated 

 and detailed description of the marvelous nerve-endings in the ex- 



^Compare also Bashford Dean. The Pineal Fontanelle of Placodermata and 

 Catfish. 19. Rep. Comm. of Fish, New York. Hecksher, W. Bidrag til 

 Kundskapen om Epiphysis cerebri udvikings historie. Kopenhagen, 1890. 



*Vater-Pacini'sche Korperchen im Stamme des menschlichen Nervus- 

 tibialis. Anat. Anz. VIII. 12, 13. 



^DOGIEL, A. S. Die Nervenendigungen in der Haut der auseren Genitalor- 

 gane des Menschen. Archiv. f. mikr. Anat., XLI, 4. 



