ON THE SHETLAND CRUSTACEA, TUNICATA, ETC. 281 



thorns; forty miles east of "Whalsey Skerries, 70-90 fathoms. The 

 name Calliope being preoccupied, Lilljeborg has changed the title of 

 this genus to Calliopius. 



Calliopius Fingalli (Bate & Westw.). The type specimen found in 1861. 



Eusirus Helvetia?, H$&iQ=Eusirus Widens, Heller, Amphip. des adriatischen 

 Meeres, p. 32, pi. iii. fig. 19. Five to eight miles east of Balta, in 40-50 

 fathoms, sand, 1867. Thighs of last three pereiopods strongly serrated 

 behind; first two segments of pleon dorsally produced into a central 

 tooth; hinder margin of third segment of pleon serrated on the side, 

 lower serrations directed upwards, upper serrations directed downwards ; 

 all the uropods subequal in length; telson reaching to the middle of 

 the rami of the last pair. 



Lcucothoe furina (Savigny). St. Magnus Bay and Balta Sound. 



articulosa (Montagu). In branchial sac and water-passages of Ascidia 



mentula and A. venosa. This species and Anonyx tumidus are the two 

 Amphipoda which, with a number of Copepoda, constitute the crustacean 

 parasites of the Ascidiadce. 



Gossea microdeutopa, Bate. Eound in 1861 ; the exact habitat forgotten. 



Aora cjracilis, J$a,te=Autonoe punctata, Bruzelius, Skand. Amphip. Gammarid. 

 p. 24, pi. i. fig. 3. Common in shallow water in all the Voes, among 

 Laminariae. The female differs widely from the male in the structure 

 of the first gnathopods. In these organs the meros is not abnormal (as 

 in male), the wrist subquadrate, slightly widening distally, posteriorly 

 fringed with setae, and a tuft of setae on the side; propodos broadly 

 ovate, with tufts of setae on both margins ; palm undefined, except by 

 the presence of a spine with which the finger when closed impinges ; 

 finger strong, half length of hand, serrate on the inner margin, with a 

 small cilium in each serration. I believe, judging from specimens named 

 for me by Mr. Bate, and the figure and description which represent an 

 animal " sparingly scattered with black dots," that the Microdeuteropus 

 anomalus of Bate and Westwood, p. 293 (not of RatJilce), is the female 

 of this species ; but the females of this and of the next species are so 

 very much alike as to be almost undistinguishable. 



Microdeuteropus anomalus (Eathke). Gammarus anomalus, Nova Acta Leop. 

 1843, p. 63, pi. iv. fig. 7, =Aulonoe anomala, Bruzelius, Skand. Amphip. 

 Gammarid. p. 25, pi. i. fig. 4 (but scarcely Microdeutopus anomalus, 

 Bate & Westwood, Brit. Sessile-eyed Crust, p. 289), = Microdeutopus 

 yryllotalpa, Bate & Westwood, 1. c. p. 289 (but not of Costa). 



The figure in the ' Brit. Sessile-eyed Crustacea ' of Microdeutopus gryl- 

 lotalpa represents the young male of this species ; in the adult male the 

 strong tooth-like process of the carpus of the first gnathopods is itself 

 furnished with a secondary (lateral) tooth ; and the hand is much nar- 

 rower at the base than at the apex, the posterior margin being concave ; 

 this state is well represented by Bruzelius, pi. i. fig. 4, d. The female 

 is extremely like that of the last species, and is sufficiently well repre- 

 sented at p. 293, Brit. Sessile-eyed Crust. ; though, for reasons already 

 stated, I incline to think that that figure really is drawn from the female 

 of Aora. This species is most certainly not the Microdeutopus c/ryllo- 

 talpa of Costa (Ricerchc sni Crostacei Amfip. del regno di JSTapoli, 

 p. 231, pi. iv. fig. 10), which, from the four teeth of the carpus, seems to 

 be closely allied to, if not identical with the Autonoe fjrandimana of 

 Bruzelius. Dredged in 70-90 fathoms, about forty miles east of the 

 Out Skerries, 1861. 

 1868. x 



