of the Fishery Board for Scotland. 



169 



gills of Callionymus maculatus from the Firth of Clyde, collected in 1899, 

 and from the Moray Firth, collected at Station VII. on January 21th, 

 1900. From the ornate character of the species I have called it 

 Clio nd racanth us ornatus. 



Fam. LERNiEOPODIDiE. 



This, the last of the series of seven families into which the parasitic 

 copepods of fishes have been divided, contains ten genera, and five of 

 these are represented in the present paper, viz.: — Thysa?iote, Charopinus, 

 Lernceopoda, Bracliiella, and Anchorella. 



Genus Tliysanote, Kroyer (1863). 



Tliysanote impudica (Xordmann). (PI. VIII., figs. 2-5.) 



1832. Bracliiella impudica, Nord., Mikrog. Beitr., vol. ii., 



p. 92, PI. VIII., fig. 3. 

 1899. Tliysanote impudica, Basset-Smith, Proc. Zool. Soc. 



Loud. (April 1899), p. 197. 



I ascribe to this species a small Brachiella-like parasite found on the 

 gills of a specimen of Trigla liirundo (the red gurnard) in the collections 

 of fishes in the Laboratory of the Fishery Board for Scotland at Bay of 

 Nigg, Aberdeen. I have not been able to ascertain definitely where the 

 fish was captured, but it was probably taken either at the mouth of the 

 Forth estuary or in the Firth of Clyde. 



Genus Charopinus, Kroyer (1863). 



Charopinus dalmanni (Retzius). (PI. VIII., figs. 6-10.) 



1831. Lerncea dalmannii, Retz., Froriep's Notizen, vol. xxix., 



p. 617, PI. VI., fig. 5. 

 1863. Charopinus dalmannii, Kr., Naturh. Tidsskr., r. iii., 



p. 280, PI. XIV., fig. 6. 

 1878. Siylopliorus lujpoceplialus, Hesse, Ann. Sci. Nat. (6), vol. 



viii., art. 15, p. 1. 

 1891. Charopinus dalmannii, T. Scott, Ninth Ann. Kept. Fish. 



Board for Scot., Pt. III., p. 310. 



In this species the head, or anterior portion, of the thorax is ventrally 

 and abruptly denexed, and at the angle of the thorax thus formed there 

 springs from each side a long, moderately slender and indistinctly 

 annulated appendage, which becomes dilated and lunuleform at the apex. 

 These two lunuleform apices, which, though not actually joined, fit very 

 closely together, are buried in the tissues of the fish infested by this 

 parasite. These appendages, by which the parasite anchors itself to the 

 fish, are usually described as the second maxillipedes. The posterior 

 portion of the thorax becomes gradually enlarged towards the distal end, 

 and assumes a more or less clavate form ; two moderately long and 

 slender processes spring from the ventral aspect and just in front of the 

 ovisacs ; the two sides of the posterior portion of the thorax curve slightly 

 inwards near the base, and each terminates in a small lobe. The abdomen, 

 which is situated between and slightly in front of these lobes, is almost 

 obsolete. The ovisacs are of moderate length, and saccate, and the ova 

 are small and arranged in multiserial order. The following measure- 

 ments are taken from a specimen of average size : — Length of second 



