neio Crustacea from Devon and Cornwall. 299 



springs from a notch near tlie middle of the outer margin of 

 the third joint, which is alj-o armed with a large dagger- 

 shaped terminal spine. The fifth pair are very small ; the 

 primary joint is nearly twice as broad as it is long and bears 

 a single spiniform seta on the exterior distal angle; the 

 secondary joint is indistinctly trilobed and carries two or 

 three setoe. 



Ilab. Dredged in Plymouth Sound on August 12th, 1903. 



Genus HERRMANNELLi., Canu, 1891. 

 Ilerrmannella parva, sp. u. 



Description of the female. — Similar in general appearance 

 to //. rostrata, Canu, but smaller; length of the specimen 

 described '6S mm. (^ of an inch). 



Antennules short and composed,of seven joints, the propor- 

 tional lengths of which are given in the formula — 



Proportional lengths of the joints. . 14 . 34 . 8 . 19 . 19 . 14 . 8 

 Numbei-s of the joints T 2 3 4 5 6 7' 



Antennae stout, four-jointed, but the penultimate joint is 

 very small ; terminal sette curved, claw-like, and exhibiting a 

 pseudo-articulation near the middle, as in some species of the 

 Lichomolgidte. 



]\Iandibles in the form of broad falciform plates, which 

 taper gradually to the acuminate apex. Maxillte subcylin- 

 drical, simple in structure, and bearing each a small marginal 

 and apical seta. First maxillipeds short, stout, and armed 

 with a slender, curved, terminal appendage, bearing a uni- 

 lateral row of small spinules, while a moderately long spini- 

 form seta springs from the inner margin and near the base of 

 the curved terminal appendage. The second maxillipeds are 

 moderately stout, two-jointed, and provided with a stout 

 terminal claw, as in Lichomolgus liber ^ Brady and Robertson. 



The thoracic feet ai*e somewhat similar to those of Herr- 

 mannella rostrata, Canu, but are scarcely so stout ; both 

 branches of the fourth pair are three-jointed; the first and 

 second joints of the outer branches have each a small dagger- 

 shaped spine at the distal end of the exterior margin, while 

 the third joint has a similar spine in the middle of the outer 

 margin and two apical spines, the inner one being about as 

 long as the joint from which it springs ; moreover, the second 

 joint bears one long plumose seta and the third five similar 

 setse on the inner margin; the first and second joints of the 

 inner branches have each a single seta near the distal end of 



21* 



