of the Fishery Board for Scotland. 279 



None of the specimens examined possessed the strong tooth-like projection 

 on the dorsal aspect of the abdomen which is so characteristic of the 

 typical Spirontocaris spinus of Sowerby. Though the specimens varied 

 greatly in size and age, it was only in one or two small specimens that 

 there was observed any tendency towards the development of a tooth-like 

 projection on the middle of the posterior margin of the third abdominal 

 segment. It may be that Spirontocaris securifrons should only be 

 regarded as a synonym of Spirontocaris spinus (Sowerby) ; and, with the 

 exception of the tooth-like projection on the dorsal aspect of the abdomen 

 alluded to, they are certainly very like each other. My use here of the 

 name is merely to indicate that the form which was common in the 

 gatherings collected by the "Garland" off Aberdeen is the form described 

 by Norman as Hippolyte securifrons.* The depth from which specimens 

 were obtained ranged from 32J to 60 fathoms. 



Spirontocaris pusiola (Kroyer). 



One or two specimens of this small species, as well as of Spirontocaris 

 gaimardii (M.-Edw.), were observed in a gathering collected by the 

 "Garland " in about 32 fathoms, off Aberdeen, on October 12th. 



Pandalid^e. 



Pandalina brevirostris (Rathke). 



This species was not very rare in the gatherings collected off Aberdeen by 

 the " Garland " in October and November last. Dr. Caiman has, in his 

 paper on Pandalus,"^ described certain differences between this species 

 and the others with which it used to be generically associated ; one very 

 obvious difference between Pandalina, Caiman, and the described species of 

 Pandalus is, that Pandalina has a very short, nearly straight, rostrum, 

 not unlike that of some of the species of Spirontocaris, while Pandalus has 

 the rostrum elongated, more or less curved, and slender towards the distal 

 end. 



Sub-order BRACRYURA. 



CORYSTID^E. 



Atelecyclus septemdentatus (Mont.). 



This species was obtained in a gathering collected by the " St. 

 Andrew " fifty miles south-east of Fair Island at a depth of about 65 

 fathoms on October 19th. Rev. A. M. Norman describes Atelecyclus as 

 a common species among the Shetland Islands. This species was also 

 taken by the "Garland " in 60 fathoms, off Aberdeen, on October 25th. 



Portunid^e. 



Portunus puber (Lin.). 



Several specimens of the Velvet Crab, Portunus puber, were captured 

 by Mr. H. C. Williamson in the Bay of Nigg during the month of June, 

 1900. 



* Brit. Assoc. Rept., 1861 ; Trans. Tyneside Field Club (1862), p. 267, PI. XII., figs. 

 1-7. 



f Caiman, On the British Pandalidse ; Ann. and Mag.. Nat. Hist., (7), vol. iii., p. 37, 

 Pis. I.-IV., fig. 4 (Jan., 1899). 

 T 



