CAPRELLID.K. 357 



9. Caprella nodosa. (Plate LVI. fig. 7.) 



Cnprt'lla nodosa, Trmphtun, Trans. Ent. Sue. i. p. 192. pi. 11. f. 7. 

 £(ltc(inh, Hist, des Crust, iii. p. 108. 



** Cei^halon short, furnished with a dorsal spine anteriorly directed. 

 First segment of the pereion short ; second longer than the cepha- 

 lon and the first segment of the pereion together; third and fourth 

 segments rather elongate. Superior antennae longest ; first and 

 second joints of peduncle robust, elongate; third shorter, some- 

 what obconic ; ilagellum tapering, midtiarticulate, joints subequal, 

 and furnished with a few short, often articulated, blunt spines 

 towards their distal extremities. Inferior antenna) one-third 

 shorter. Gnathopoda similar : second pair much larger than the 

 first ; basos short ; propodos ovate, palm oblique, waved, hairy, 

 inferior angle marked by a strong tooth. Pereiopoda terminating 

 in a strong curved dactylos. Colour pale brown, with a darker 

 longitudinal line marking the position of the intestinal canal. 



" Length 4 an inch. 



" Hab. Mauritius. It is found in considerable niunbers among the 

 marine plants." — Temphton. 



The male and female appear not to differ except in the latter 

 carrying the ovigerous pouch. 



10. Caprella geometrica. (Plate LVI. fig. 8.) B.M. 

 Caprella geometrica, Sai/, Proc. Philad. Acad. i. pt. 2. p. 390. 



Cephalon furnished with an anteriorly-directed dorsal tooth. First 

 segment of the pereion short, second long, third and following 

 gradually decreasing. Superior antennae not half the length of the 

 animal ; flagellum having the infero-distal extremity of each arti- 

 culus produced and armed with cilia. Inferior antennae longer 

 than the peduncle of the superior. Second pair of gnathopoda 

 having the propodos ovate, with the palm armed with a short 

 tooth and an anterior lobe. In other respects this species closely 

 approximates to C. acutifrons of the British coast. 



Length V^yths of an inch. 



Hah. Common in the bays of the U.S. (Say). 



The description and figure are taken from a specimen presented to 

 the British Museum by Professor Say. 



11. CapreUa dilatata. (Plate LVI. fig. 9.) 

 Caprella dilatata, Dana, U. S. Explor. Exped. p. 81-3. pi. 54, f. 3. 

 " Body slightly granulose under a high magnifier ; stout. Segments 

 but little oblong, or not at all so. Cephalon twice as long as the 



