160 



THE P^UR SEALS OP THE PRIIULOF ISLANDS. 



Historical review.— For the history of Ascar is delphml see i):ige 1G2. Scbueider 

 (186G, p. 44) originally described Ascaris lohulata witli the following diagnosis: 



C. Lijipeii ohue Zahiileiste mit Aurikelu \ind Zwischenlippeii. 



15. Ascaris lobulata n. sp. cf unci $ 40""". 



Rhine tief. Die Spitze des Eckzalms biklet eincn lecbten Wiukel. Die Lobeu reiclicu in die 

 Auriculae. Vnlva? Schwanz des <? leicht gekriimnit, anf dcr Bauclisoitt' glatt. 12 rapillen liiiiter 

 dem After, eine an unrcgelniiissiger Stelle niit conisL veiliiugciter IMilpa seitlicL. 1, 2, 3 hinter 

 einaiider nabe an der Sjiitzo, 1-12 unregelniiissig zu 2 uud 3 iieben eiuauder, vor dem After eine Reibe 

 Papillen. 



Delphinna yanyelicus. Craasuni. 



Fig. 90. 



Fi<;. HI. 



Fig. 02. 



Krabbe (1878, p. 47) examined specimens deposited in the museum of the Uni- 

 versity of Ko])enhagen; they were collected on the (lalathea exi)edition of Professor 

 Keinhaidt from the buccal cavity of dolpliins of the Ganges in Hooghly River near 

 Calcutta. The lips (tig. 91) resemble those of Ascarin oscvlata, but are more strongly 

 built. 



Jiigerskiold (1894, p. 401) examined specimens from the buccal of Platttninta 

 (/augeiica, which he received fi'om Levinsen, of the Kopenhagen Zoological Museum. 

 These may possibly have been the same specimens which Krabbe studied, but 

 Jiigerskiiild doe.s not state so. He found the vulva 6""" from t\n) head in a female 

 25""" long. The exc^retory organ agrees with the same organ in A. sj>iculi(/cra iunl 

 A. osculata; the posterior division of the oesophagus (tig. OL') is unusually short, and 

 possesses a caecum; the intestinal caecum is also present. 



