ZOOLOGY AND BOTANY, MICROSCOPY, ETC. L57 



for two or three minutes and then fades and disappears. This display 

 is very feeble daring a daylight period compared to what is seen after 

 dark, when spontaneous phosphorescence is present. 



Temporal Region in Vertebrates.* — Hugo Fuchs takes a compara- 

 tive osteological survey of this region of the skull in quadrupedal 

 Vertebrates. 



Morphological Significance of Sacral Ribs. — Hugo Fuchs t dis- 

 cusses the view that the sacral ribs of the crocodile are not homologous 

 with dorsal ribs, but with transverse processes. Transverse processes 

 are never separated off by sutures from the neural arch. The sacral 

 ribs of the crocodilians are always so separated off, and they are homo- 

 logous with ordinary ribs. 



Roy L. Moodie + discusses the same question, and concludes that the 

 sacral rib does not differ from a dorsal rib except in function and form. 



Significance of the Entochorda.§— S. A. Ussoff regards the ento- 

 chorda as a " collective organ," comprising various primordia which 

 have not been developed. Thus, in the head of Anura it develops at 

 the expense of those endodermic primordia which appear as a result of 

 the attempt of the gut to unite with the " stomodseum-ectochorda " — the 

 front end of the notochord. This is merely an illustration of the author's 

 interpretation. 



Study of the Notochord. || — L. Roule maintains that the primary 

 embryonic form is hollow — a diverticulum of the gut (cordocoel) or an 

 enteric groove (cordoglyph). The former is seen in Enteropneusts and 

 Tnnicates, the latter in Cephalochorda and Craniota. The solid type or 

 rhabdocord is secondary. Roule's views are summed up in this scheme : 



Type du Type du 



Cordocoele Cordoglyphe 



, Craniotes 



(Rhabdocordes -I ' ' 



Notoneures J ( Urocordes Tuniciers 



vCcelocordes Enteropneustes 



Vibrissas on Cats' Arm.^f — F. Fritz describes what Beddard has 

 called carpal vibrissas. About 2 \ cm. above the carpus there are 3-G 

 tactile hairs projecting from a wart-like tubercle. The minute structure 

 of the region, including the innervation, is described in detail. 



New Insectivore.** — E. L. Trouessart gives a short account of 

 Neotetracus sinensis g. et sp. n., from Western China — a small animal 

 about the size of a wood mouse (Mm sylvaticus) with very long hind 

 legs. Its dentition approaches that of the hedgehog, but it has a 

 Gymnurine pelage. It seems to lead to a union of the two sub-families, 

 Erinaceinae and Gymnurinae. 



• Anat. Anzeig., xxxv. (1909) pp. 113-67 (25 figs.). 



t Op. cit., xxxiv. (1909) pp. 349-56 (2 figs.). J Tom. cit., pp. 361-4. 



§ Op. cit. xxxv. (1909) pp. 168-76 (10 figs.). 

 || Arch. Zool. Exper., x. (1909) pp. 447-546 (4 pis.). 

 «j Zeitschr. wiss. Zool., xcii. (1909) pp. 291-305 (1 pi. and 2 figs.). 

 ** Comptes Rendus, cxlix. (1909) pp. 950-2. 



