2 HOVLE, Generic Names Octopus, Elcdone, and Histiopsis. 



OCTOPODIA, he characterises it as follows [p. loS] : — 

 " Caput ciun ocnlis viter pedes et ventrent. Os in niediis 

 pcdibns eminet rostro accipitrijio. Pedes octoni vel deni os 

 circmndantes, acetabnlis interius asperi \J aspersi\ Venter 

 vesica atramentifera instnictns, iitfra scissnra transversa 

 ad basin apertus, supra guam fistula excretoria eminet !' 



The subdivisions proposed by him are as follows : — 



" CLASSIS I. Pedes octoni breves, promuscidcs binae; 

 venter pinnatus, ossiculum dorsi [p. loS]. 

 Sepia I. Ventre latissimo rotundato undique pinna 



cincto esse dorsali inaximo [p. 109]. 

 LOLIGO II. Ventre stricto siibulato, pinita angulaii 



media, osse dorsali penniformi [p. 1 10]. 

 Teuthis 1 1 1. Ventre dtpresso caudato ancipiti\^. 1 1 3]. 

 Sepiola IV. Ventre parvo rotundo, pinnula rotunda 

 ad latera, dor so ex osse [p. 1 1 6]. 



CLASSIS II. Pedes octoni longi basi palinati, absque 

 promuscidibus, pinnis et osse dorsali [p. 108]. 

 Polypus V. Acetabulorum in interna pedum superficie 

 ordine duplici, in basi singulis acetabulis, paullatim 

 increscentibus [p. 1 1 6]. 

 MOSCHITES VI. Pcdibns longissimis, unico acetabu- 

 lorum ordine [p. 1 1 8]. 

 Nautilus VII. Singula}'i acetabulorum, ordine, testa 



inclusus [p. 120]. 

 POMPILUS VIII. Pedibus lobatis sen digitatis absque 



acetabulis'^ [p. 128]. 

 With the diagnosis of the genus Polypus just quoted, 

 it is interesting to compare that given by Lamarck (1 100) 

 of the genus Octopus, which is as follows : — 



" Corps charnu, obtus inferieurement, contcnu dans un 

 sac depourvu d'ailes, et n'ayant dans son intcrieur ni os 

 spongieux, ni lame cornee. Bouche terminalc, cntouree 



