PELAGIC LIFE, FALMOUTH. 309 



Beoemher. On the 4tli of the month, surface-temperature was 

 51°6F. I took this temperature twice, for it occurred to me at the 

 time, what a great rise there was in the surface temperature, but 

 with the same results in both cases. On the 16th, the wind was 

 from the south-east, surface temperature at 11 a.m. being 51°F. 

 The tide was three-quarters ebb when the surface-net was worked 

 off the Zoze point. The most interesting forms secured were two 

 specimens of Calanus finmarchius, and what I at first imagined to 

 be a single specimen of Mysis. On returning to my hut, a close 

 examination of this specimen shewed me that I had caught a 

 species of shrimp with luminous organs, called Nyctiphanes 

 couchii. This solitary specimen measured 11 m.m. in length, 

 and seemed to be in the same stage as those captured in 

 abundance off St. Abbs Head by Mr. Cunningham and myself 

 in a tow-net during June, 1887. On the 21st, the only form of 

 interest obtained was one specimen of Anomalocera patersonii. 

 The surface temperature on that occasion was 46°F. 



January, 1892. The wind during the greater part of this 

 month was from the north, and as a natural consequence, the 

 surface-net gatherings were neither rich nor varied. The surface 

 temperature on the 1st was 49°3F. On the 18th, surface tem- 

 perature being 47° F, a fair quantity of the free swimming larvse 

 of Chiton were captured in my tow-net. A few days later, when 

 collecting at low water under the Eastern breakwater, I found 

 attached to the balks of timber innumerable quantities of 

 capsules deposited by these mollusks. Towards the end of the 

 month Oithonia spinifrons occurred in profusion in tow- net 

 gatherings. 



February. Surface temperature on the 1st veas 46 °F. On 

 the 5th, I noticed in my tow-net gathering made on that morning 

 the first trace of the gelatinous alga recorded in my previous 

 report. On the 15th, the surface temperature had risen to 48°F. 

 During this month specimens of the ephyra stage of Aurelia 

 occurred very sparingly in tow-net gatherings, and as a natural 

 consequence, Aurelia aurita, the adult animal, has been quite 

 scarce in the harbour this summer. On the 23rd, I noticed 

 that several females of Oithonia spinifrons had ova attached. 

 Towards the end of the month the surface temperature of the 

 sea had fallen to 44''6 F, the weather at that time being very 

 cold and stormy. 



