434 



Stenocaris minor, (Scott). 



(Suppl. PL 50). 



Gylindropsyttus minor, Th. Scott, Additions to the Fauna of the Firth of Forth. 10th Ann. Rep. 

 of the Fishery Board for Scotland, p. 210, PI. XI, figs. 1724. 



Specific Characters. Female. Body slender, cylindrical in form, resembling 

 that in S. gracilis. Rostrum very small and apparently not defined behind. 

 Urosome about the length of the anterior division, genital segment the largest, 

 last segment scarcely smaller than the preceding one. Caudal rami about the 

 length of the anal segment, slightly divergent, and of nearly equal width through- 

 out, outer edge carrying near the end a short bristle, principal apical seta trans- 

 formed to a lancet-shaped appendage accompanied outside by a slender bristle 

 issuing from its base. Anterior antennae resembling in structure those in S. 

 gracilis, but composed of 7 well-defined joints, the terminal part being 3-articulate 

 instead of biarticulate. Posterior antenna) likewise rather similar, though having 

 the outer ramus comparatively smaller. Oral parts and the 4 anterior pairs of 

 legs very nearly agreeing in their structure with those appendages in 8. gracilis. 

 Last pair of legs, as in that species, very small, lamelliform, but less exserted 

 at the end, and having only a single coarse spine inside, marginal setae 7 in number. 

 Ovisacs small and narrow, each containing only 3 or 4 ova arranged in a 

 single row. 



Colour whitish. 



Length of adult female 0.90 mm. 



Remarks. This form, described by Th. Scott as a species of the genus 

 Cylindrepsyttus, is evidently referable to the genus Stenocaris, as defined in the 

 main part of this work, agreeing with the type species, S. gracilis, in all essential 

 characters. It differs from that species in the much smaller size, the distinctly 

 7-articulate anterior antennae, the peculiar transformation of the principal caudal 

 seta, and finally in the form and armature of the last pair of legs. 



Occurrence. Some few specimens of this form, all of the female sex, were 

 found last summer at Korshavn in a depth of about 20 fathoms, sandy bottom. 



Distribution Scottish coast (Scott). 



Page 333. 

 Add the following new genus : 



Gen. TaellidiOpSiS, O. 0. Sars, n. 



Generic Characters. General form of body somewhat resembling that in 

 Tachidius, the anterior division being distinctly broader than the posterior, 





