new and rare Cnistuceafroin Scotland. 1 tl 



StenheUa dt'spar*, sp. ii. (PI. VIII. figs. 8-12.) 



Lengtli 'OO millim. (Vtt oi' an incli). Rostrum prominent. 

 Anterior antcnniii eight-jointed ; the first four joints are robust, 

 the next tliree are small, and the hist is comparatively long 

 and narrow, being equal to the combined lengths of two pre- 

 ceding joints. The t'orinula shows the pro[)ortioaal lengths 

 of the joints — 



■27 . 19^13^14^6 . 9 ^8 . 18 

 1 2 3 4 5 6 7 "8' 



The secondary branch of the posterior antennae is three-j jinted, 

 the first being nearly equal to twice the combined lengths of 

 the other two. The mouth-organs are nearly as in StenheUa 

 tma, Brady. The first four pairs of swimming-feet also 

 somewhat resemble those of tiiat species. The fifth pair are 

 broadly foliaceous, like those of StenheUa hispid i, Brady, but 

 the distance between the various setas with which they are 

 furnished is greater in StenheUa dispar. Abdomen and 

 caudal stylets nearly as in StenheUa ima. 



Ilab. Vicinity of the Bass Rock, Firth of Forth, dredged 

 in 23 fathoms ; bottom sand and gravel. 



Remarks. StenheUa dispar appears to be intermediate 

 between StenheUa ima and StenheUa hispida ; it resembles 

 StenheUa ima in the form of the first four pairs of swimming- 

 feet and StenheUa hispida in the form of the fifth pair, but 

 differs from both in the structure of the anterior antennae. 



Cletodes irrasaf, sp. n. (PI. VIII. figs. 13-17.) 



Length *8 millim. (y^j of an inch). Body elongate-cylin- 

 drical, all its segments except the first furnished with a trans- 

 verse fringe of small hairs a little in front of the posterior 

 margin. Anterior antennje stout and sparingly setiferous, 

 shorter than the first body-segment, six-jointed ; the second 

 and last joints are longer than any of tiie others, while the 

 fifth joint is very small, as shown by the formula — 



20 . 26 ■ 20 . 10 . 3 . 24 

 12 3 4 6 6' 



Posterior antennae three-jointed, the first and second joints 

 are nearly of equal length and about one and a half times 

 the length of the next ; a very small secondary branch bearing 



* Dispar, different, i. e. from auy known species, 

 t Irrasus, unshaven. 



