468 Part III. — Twentieth Annual Report 



(fig. 25) ; the appendages to the first abdominal segment in the male are 

 small and carry three setae — two moderately long and one short. 



Dr. Eugene Canu has given a very full series of figures of the female, 

 but he refers to the male as being unknown.* 



Dactylopus coronatus, T. Scott. 



1894. Dactylopus coro7iatus, T. Scott, 12th Ann. Kept, of the 

 Fishery Board for Scot., pt. iii., p. 255, pi. ix., figs. 12-20. 



This species was dredged off the N'orth Craig, Inchkeith, Firth of 

 Forth, in 8 fathoms, on July 4th, 1 901. The first specimens from which 

 the species were described were also obtained in the Firth of Forth, but 

 in the vicinity of the Bass Rock, near the mouth of the estuary. The 

 Firth of Forth appears to be the only Scottish locality where this 

 Dactylopus has been hitherto obtained. 



Cylindropsyllus leevis, G. S. Brady. 



1880. Cylindropsyllus loivis, G. S. Brady, Mon. Brit. Copep., 

 vol. iii,, p. 30, pi. Ixxxiv., figs. 1-8. 



A male specimen of this large and somewhat remarkable species was 

 obtained in some bottom material from Smith Bank, Moray Firth, on 

 February 15th, 1901. 



MONSTRILLID.B, 



The Family Monstrillidae is represented in the copepod fauna of our 

 seas from the English Channel to the Shetland Islands ; a few of the 

 species appear to be somewhat local in their distribution, while others are 

 co-extensive with the seas that surround our shores. The family com- 

 prises the two genera Monstrilla, Dana, and Thaumalens, Kroyer, and 

 both are represented in the marine fauna of Scotland. Specimens be- 

 longing to this curious group of copepods have been captured at odd 

 times in the Firth of Forth almost every year since 1888. t The first 

 specimens obtained were ascribed to Oymhasoma rigida, I. C. Thompson, 

 but they were shortly afterwards submitted to Mr. Gilbert C. Bourne, 

 who was preparing a revision of the various forms which had recently 

 been observed in the British seas, and his opinion of these specimens 

 from the Forth estuary was that they were identical with Monstrilla 

 helgolandica, Claus.J Other specimens have been obtained at odd times 

 which appeared to belong to the same species, and also one or two belong- 

 ing to a different species, and which were subsequently identified as the 

 true Monstrilla rigida of I. C. Thompson. Two apparently adult speci- 

 mens of a Monstrilla were obtained in some tow-net gatherings collected 

 by the "Garland " on the 24th of July, 1901, and as they seem to differ 

 from those previously mentioned as occurring in the Forth estuary, I 

 give here a short description of them — they appear to be identical with 

 the form described by Dr, Giesbrecht under the name of Monstrilla 

 longiremis. 



Specimens of Monstrilla have also in recent years been obtained in the 

 Firth of Clyde, and though usually they have occurred very sparingly, 

 yet on one or two occasions large numbers have been obtained in a single 

 tow-net gathering. In a small gathering of material, in which there was 



* Les Copep. du Boulonnais, p. 166, pi. iv., fig. 6-21 (1892). 

 t Annual Keport of the Fishery Board for Scotland, Part III., p. 316 (1889). 

 J Notes on the genus Monstrilla, Dana ; Quart. Journ. Micr. Sci., (2), vol. 30, p. 515 

 pi. XXX vii., figs. 14, 15 (1890). 



