THE NAUTILUS. 53 



etroit, eu forme de silloii; branchies forinees de deux series 

 peu nonibreuses de massues oblongues, arrondies a leur 

 sommet, pediculees a leur base, et recouvertes de petits tuber- 

 cules ; organes de la generation reunis au cote droit anterieur, 

 anus plus en arriere. ' ' 



And Gould's description of the genus Chioraera reads: 

 ' Corpus limaciformis, caput enonne, pedunculatum, semi- 

 globosum; pagina ventrali discoidea ; ore longitudinali, 

 seriebus binis cirrhorum cincto; tentaeulae cephalicse foliate, 

 retractiles ; lobi branchiales flabellif ormi, serie unica utrinque 

 ordina; foramen generativum ab anali remotum, fere dor- 

 sali." 



In his comment in the English he says : 



This curious and hideous animal seems to belong to 

 the family Tritoniadae, with which it agrees in all respects 

 except its curious oral apparatus. (As regards the family 

 rank, vide Kjerschow-Agersborg, 1919, 1921). The mouth 

 is inferior, surrounded by a double series of long cirrhi, each 

 of which has an independent motion. Two auriform append- 

 ages, on the back of the head, differing in no respect from the 

 branchial expansions except in being destitute of reticula- 

 tions, seem to be the true tentacles, and are retractile. The 

 generative aperture is at the usual place on the right side, the 

 vent being distant, near the back." 



Both Melibe Rang, and Chioraera Gould, have a series of 

 papilla? (epinotidia) on each side dorso-laterally ; a large 

 hood, cowl, or veil; a pair of tentacles, (the so-called rhino- 

 phoria) carried on leaf-like stalks, and situated anteriodorso- 

 laterally on the veil ; the veil is fringed with at least two rows 

 of cirrhi ; and a narrow grooved foot which is blunt in front 

 and pointed behind ; the head is distinctly separated from the, 

 body, by a neck, and in each case it is very large ; the gizzard 

 is lined with a ' ' keratinized ' ' secretion of its epithelium, 

 and this keratinized secretion is the so-called stomach-plates 

 of Alder and Hancock, or Magenzahnen of Bergh, which pro- 

 tects the delicate epithelium and may also help in the mastica- 

 tion of the food ; these two types are carnivorous ; both are 

 pelagic; and both are distinctly cladohepatic. On a priori, 



