THE EGG-CAPSULE. 



29 



sent. In further detail, the capsules may be classified on somewhat the basis shown 

 by Table E on page 30. {Cf. this table for proportional measurements. ) 



Table C- — E^^-Ca^sulcs of C/iinncroids. 



Approximate 



depth at which 



deposited. 



Fathoms. 



10+ 



5 to 65 

 ?300 



?200 



Species. 



Callorhynchus*. 



Chimsera coUiei. ... 

 mitsukurii 

 monstrosa 



150 



375 



300-600 



561 



phantasma.. . 



Harriotta raleigliana . . 



Rhinochim^ra pacifica 



indica . 



Reference. 



(For detailed reference 

 c/. Literature List.) 



1842 Miiller, J. 



1865 Dumeril, A 



1S71 Cunningham, R. O. 



1880 Gunther, A. 



iSgy Parker and Haswell. 



1899 Garman, S. 



1901 Vavra. 



190: Jaekel, O. 



1903 Dean, Bashford. 



1904 Dean, Bashford. 

 1855 Nilsson. S. 

 185S Liitken, C. F. 

 1S74 CoUett, R. 

 1877 Malm, A. W. 

 i88g Gunther, A. 



1892 .-Mcock, A. (C. monstrosa?). 



1896 ) 



and ,■ Grieg, J. A. 



1899 \ 



1896 Olsson, I'. 



1901 Jaekel, O. 



i8Sg Gunther, A. 



1904 Dean, Bashford. 



(v. infra) 



1904 Dean, Bashford. 



1S91 Wood Mason, J., and Alcock, A. 



*Referenceis made in the present paper (pp. 30, el scq. and iigs. 15 b-f) to several "species" of capsules 

 of Callorhynchus: e. g:, Specimen 7983, Zool. Mas. Jardin des Plantes, Cape of Good Hope (Quoy and 

 Gaimard); Specimen 7982, Zool. Mus. Jardin des Plantes, Cape of Good Hope (Voyage Peron): 

 Specimen 79S4, Zool. Mus. Jardin des Plantes, Chile (Martinez) ; Specimen 8823 a, Zool. Mus. Jardin des 

 Plantes, Straits of Magellan (Savatier). Also to specimens from Australia in the British Museum. 



Table D. — Effg-Cafsules of Fossil Chniucroids. 



Ischyodiis (^ AlL-loclus)/cri-Uffinciis: 

 (Upper Jurassic) 1901, Jaekel, O. 



The fossils Spirangium, Palaeoxyris, Fayolia, and similar forms may prove to be the egg- 

 capsules of Chimasroids or of cestraciont sharks. From their imperfect preservation, 

 however, they may equally well be coprolites of fishes having spiral intestinal valves. To 

 a somewhat more definite category, however, belongs the following "Spirangium" : 

 S^irafiffiiim : 



1903, Sauvage, H. E. 



Cf. fig. 13. If this prove to be a Chima?roid egg-capsule it is remarkable in a feature suggest- 

 ing the capsule of a cestraciont — marginal webs arranged in spiral. 



