The Opisfhohranchiata of Sovfh Africa. 75 



talis sat angustus, digitatus, digitis papilligeris ; margo dorsalis 

 digitis similibus sed majoribus, parcis ornatus ; rhinophoria retrac- 

 tilia, clavo perfoliato ; bianchia paucifoliata, e foliis magnis, omnino 

 discretis, in orbem dispositis, tri- vel quadripinnatis composita ; 

 tentacula a lateribus disci oralis auriculatim soluta ; podarium 

 magnum, dorso latins. 



Armatura labialis nulla. Eadula seriebus confertis numerosis e 

 dentibus uniformibus minutissimis et numerosissimis formata. 



Prostata magna. Glans penis aculeis armata. 



Body rather clumsy, oval, subangular, rounded behind ; the back 

 somewhat narrower than the foot, the frontal margin with a row of 

 closely set papillated processes, the lateral with a few similar but 

 larger appendages ; the perfoliated rhinophores retractile within 

 sheaths ; the (oral) tentacles short, flattened ; the branchia (non- 

 retractile) formed of few (5) quadripinnate, large plumes, each 

 standing separately (as in Hexabranchus) surrounding the vent. 

 The foot very strong, larger than the back, and, like it, on the back 

 covered with tubercles. 



The lip disc clothed by a simple cuticle, without particular arma- 

 ture. The rasp shows many closely set series of tooth-plates, the 

 number of plates in the series very great ; the plates uniform, very 

 small and with tricuspid hook.* 



A large prostatic gland exists. The glans penis armed with thorns. 



Only one species of the genus is hitherto known. 



Kalinga orkata, a. et H. 

 Alder and Hancock, I.e., 1864. pi. xxxii., figs. 7-10. 

 E. Bergh, I.e., 1890, pp. 959-962. 



PL XIIL, figs. 1-5. 



Two large specimens were captured off Amatikulu Conical Hill by 

 shrimp-trawl ; both were dissected. When alive the colour of the 

 animals was a " light flesh or light brown." 



The length of the individuals was 7-5 and 9*5 cm. by a breadth of 

 4-5 and 6 and a height of 25 and 2-7 cm. ; the breadth of the back 

 proper was 3*2 and 3*8 cm., its brim projected 7 mm., and the height 

 of the (5) larger marginal papillae reached up to 15 and 17 mm. ; 

 the length of the gill-leaves was 15-20 mm., the anal papilla pro- 

 jected 5 mm. ; the height of the rhinophores 7 mm. ; the breadth of 



* The specimen formerly examined by me had been taken by angling, and the 

 anterior viscera were torn out, 



