ASCAEIS OSCULATA. 



153 



q^uodammudo conveniant. Corpus utrinque subatteuuatum, autrosuiu fcro teuuius. Cauda brevis- 

 sima acuta. Genitalia feminae ut in reliqnis ; maris duplo niinoris spioula oxserta uon vidi. Tubus 

 cibarius pro more. 



Obs. 1. Vermes phocae ante biduum occisae vividissimi, vasoulo aquae repleto et furno (mane et 

 modice tantum oalefacto) iraposito commissi, nyothemeron, 36 boras et ultra vixere. 



Obs. 2. CI. Hellwig specimen a cl. quondam Wewetzer, Med. Cand. in Phooa vitulina, nescio quo 

 loco, repertum mecum oommunicavit, meis duplo majus, crassiusculum, oujus parspostica anteriore 

 omnino crassior est, ceterum vero, quantum in verme mortno conspicere licet, hue pertinere videtur, 

 ut Ascaris nostra forsan ad sectionem quintam amaudauda sit. 



Later (1819, pp. 39, and 651-652) he mentions that it was at Greifswald that he 

 found his specimens; that Bakker found specimens which were larger than his, and 



Fig. 77. 



Fig. 76. 



Fig. 78. 



that Bremser found specimens in Phoca groenlandica, of which the male was 15, the 

 female 18 to 24 lines long. In describing the worms, Kudolphi adds: 



Caput valvnlis majusculis margioatis, suborbicularibus, a, quibus nomen desumsi, instrnctum. 

 Corpus posteriora versus minus attenuatum ; canda crassa, maris inflexa, apice brevissimo acuto, ante 

 quem spioula duo lougissima, inourva; canda feminae recta obtusa cum brevissimo et tenui apice 

 acuto. Membrana lateralis in apice colli latior obtusiuscula, tum tenuis deourrens, brevi tenuissima 

 et fere invisibilis. 



Speoimina mea pusilla eomparavi, et horum quoque reperi, quibus pars posterior crassior est, 

 reliqua conveniunt. 



Bellingham (1844, p. 169) mentions the presence of A. osculata in the oesophagus 

 and posterior nares of Phoca vitulina, but makes no further observations on the species. 



Dujardin (1845, p. 164) takes his description from Eudolphi (1809 and 1819) and 



does not appear to have seen this form. Diesing (1851, p. 169) adds nothing in the 



way of anatomical characters, but gives several additional hosts, namely, Phooa pan- 



.therina [='i\,P. gryphtis { — Halichoerus grypu/i), P. hispida {=P. foetida), P.barbata 



[=Erignathus barbatus), and P. monachus {=Monachus albiventer). 



