MARINE BIOLOGICAL STATION AT PORT ERIN. 309 



Candacia pectinata, few. 

 Zoeae, many. 

 Oikopleura, few. 



A few notes on the prevalent forms in the different 

 months will now be given. 



In the only tow-netting taken in January, the most 

 notable forms were a Radiolarian (Acanthometra) , of which 

 there were many ; the Hydromedusa Hybocodon prolifer, 

 which, curiously enough, has not again been noted during 

 the year; a Holothurian larva (fig. 1, PI. VII.), and the 

 three stages of the development of an Asterid larva, 

 figured on the same plate (figs. 4 to 6). 



There were also several trochophore and post-larval 

 stages of Polychaota, and single specimens of Tomopteris 

 onisciformis and Autolytus cornutus. Sagitta, recorded 

 in the Eleventh Annual Report as abundant in January, 

 Was not seen. There were a few Molluscan veligers and 

 several specimens of Oikopleura. Lastly, a single speci- 

 men of the curious larva represented on PI. VI. (fig. 5), 

 was seen, and kept under observation for some time. 



In the February tow-nettings the Acanthometrids were 

 well represented, and the Hydromedusae Obelia and the first 

 stage, with four tentacles, of Phialidium temporarmm, 

 appeared. Bipinnaria and Auricularia larvae were in force, 

 and a few Echinoid plutei, of two species, were noted. 

 Sagitta, the larva of a Bopyrid, Nauplii, and Zoeae appeared 

 in increasing numbers as the end of the month drew near. 

 Fish eggs appeared in small numbers on February 3rd, 

 and fish larvae, of two species, were taken on the 23rd. 



A tow-netting, taken on March 13th, showed the Eadio- 

 larians to be present in diminishing numbers. Several 

 very young specimens of Hormiphora appeared, and many 

 Echinoid plutei, of three species, along with small numbers 

 of Auricularia and Bipinnaria larvae, and segmenting eggs 



