GARMAN: THE CHTMAER0ID3. 271 



Species with depressed proboscis and with palatine and mandibular teeth 

 bearing numerous tritors in several series on the sides of the plates. 



Harriotta raleighana Goode & Bean, 1894. 



CALLOEHYNCHIDAE Garm., 1901. 



Chismopnea, with a short proboscis ending in a retrorse leaf-shaped extrem- 

 ity, with palatine and mandibular teeth bearing one or two large tritors on the 

 side of each plate, with a notochord not surrounded by narrow cartilaginous 

 rings, with a simple cartilage in each clasper of the male, and with lateral 

 canals that in the adult become tubular, opening outward through pores. Only 

 one genus now known. 



CALLORHYNCHUS Gnoxow, 1754, 1763. 

 From the teeth of the specimens at hand five species are to be distinguished. 



CaUorhynchus callorhtjnchus Linne, 1758. 

 Callorhynchus milii Bory, 1823. 

 CaUorhynchus smythii Benn., 18-39. 

 CaUorhynchus capensi's Dum., 1865. 

 CaUoihynchits tritoris Garm. 



CaUorhynchus antarcticus La C, C. australis Shaw, and C. peronii Dum. ap- 

 pear to be synonyms for C. CaUorhynchus. CaUorhynchus iasma7iius Rich, is 

 not to be separated from C. mUii. Dr. Filippi, 1892, described two species 

 without giving the dental characters; one of these, his C. antarhcus, resembles 

 C. smyUiii, the other is much like C. CaUorhynchus. Dr. Alcock, 1891, secured 

 indications of the existence of another species from the Bay of Bengal ; it was 

 named C. mdicus by Garman, 1899, from the horny egg case, and is probably 

 to be found only at great depths. The fossil species C. hectori Xewton, 1876, 

 is to be placed with C. capensis, at least until more than the dentition is known 

 about it. 



CHIMAEKIDAE Thien., 1828. 



Chimaerae Thien., 1828. 

 Chimaeridae Boxap., 18.31. 



Chismopnea without a proboscis, with tritors situated anteriorly on the 

 edges of all the dental plates, with hemispheres and olfactory bulbs of the brain 

 in contact, with a notochord surrounded by narrow cartilaginous rings, with a 

 trifid cartilage iu each clasper of the male, and with sulcate lateral canals. 



