17G FAUNISTIC NOTES. 



mentioned last month were found, and from the 7th to the 14th were 

 particularly abundant. More especially was this the case with Ceto- 

 chiliis septcntrionalis. Ova-bearing females of C/ausia elongaia were 

 taken on the 23rd, and females of Coryceus anglicus in a similar con- 

 dition at short intervals throughout the month. Podon intermedius 

 diminished considerably in numbers. 



On the 13th, Mr. E. T. Browne brought me a fine specimen of the rare 

 Monstrilla Dance (Glaus), and I obtained another on the 18th. This species 

 does not appear to have been recorded in this neighbourhood since 1889, 

 when Messrs. Bourne and Norman obtained no less than eight specimens, 

 then its first appearance (5). Nmq^lii, of various species and stages, 

 became very abundant, and among the equally numerous Decapod larvae, 

 the Zooea of Porcellana were conspicuous. Spadella hipunctata, of small 

 to moderate size, were fairly abundant, and larval forms of all kinds 

 were more numerous than before. Tornaria, fairly numerous at first, 

 was not taken by me later than the 24th. Plutei, invariably present, 

 were particularly numerous 7th, 9th, 18th, and SOtli. Trochospheres 

 and Pilidia were plentiful, and the larvaj of Terebella appeared in 

 small numbers, but on the 18th were fairly abundant. Doliolum tritonis 

 was more or less abundant throughout the month, and on the 9th a few 

 specimens of Thalia democratica-7nucronata (Lusk) were taken. Oiko- 

 pleura maintained its numbers as in August. Muggicea was abundant 

 throughout the month, sometimes exceedingly so. Ccratium occurred 

 occasionally in small numbers, and Diatoms were fairly plentiful, more 

 particularly so on the last day of the month, when the tow-net was 

 quite choked with them. 



October. — The diminution of numerous forms of life, indicated 

 towards the end of September, became very conspicuous during 

 October. Podon and Evadne disappeared early, and were soon followed 

 by Centropages typicus. Clausia do7igata, Oithona spinirostris, and 

 Coryceus anglicus alone maintained their numbers, and of the two latter 

 ova-bearing females were frequently found. Navplii and Decapod larvse 

 became scarce. Doliolum disappeared on the 13th, but Oikopleura 

 appeared more frequently, seldom a tow-netting without it. A fine 

 specimen of Tomopteris onisci/ormis (Eschsch), was taken on the 22nd. 

 Spadella increased in numbers and in size. Post-larval stages of many 

 Polychcetes were still abundant, and with them Cyphonautes maintained 

 itself without perceptible variation. Muggioea was still abundant, and 

 accompanied by its larval form. Ohelia, with one sudden and conspicuous 

 accession to its numbers, died out, and with it the few Medusre associated 

 with it. This increased number of Obelia was taken about a mile from 

 the Breakwater. Diatoms, which were inconveniently conspicuous for 

 the first day or two, resumed normal proportions. 



