802 C R U S T A CE A. 



nearly to a point and terminating in a pair of slender pointed 

 stylets, which are not jointed. Four anterior legs subchelate, the 

 rest unguiculate; six posterior subequal. Antennae four; second 

 pair having a flagelluin ; first pair very short, with a tuft of short 

 hairs at apex. 



The animal for which this genus is instituted resembles much the 

 males of some Bopyri in form and its members. It is very close to 

 Rathke's Liriope (Beit. Fauna Norweg., p. 60, tab. 1), which this 

 author makes an Amphipod ; but the Liriope has the posterior legs 

 short, and ending in a slender styliform joint, not unguiculate. 



Cryptothir minutus. 



Corpus ohlongo-lanceolatum, posticd acuminatum, anticd truncatum. 

 Caput transversum, segmento proximo majus, ad frontem paulo 

 angustius. Abdomen Q-articulatum, segmento postico minore. Styli 

 caudales terminales, strict^ appressi, artieulos abdominis quatuor lon~ 

 gitudine cequantes. Anteiinw primos %-articulatce, scopuld perbrevi 

 instructor; secundce corpore fere triplo breviores, basi ^-articulate, fla- 

 gello fere duplo longiore, 7-articulato. 



Body oblong lanceolate, acuminate behind, truncate in front. Head 

 transverse, larger than next segment, a little narrower in front than 

 behind. Abdomen six-jointed, posterior segment smallest. Caudal 

 stylets terminal, close appressed together, as long as last four seg- 

 ments of abdomen. First pair of antennae minute, three-jointed, 

 furnished with a small brush of setae; second pair about two-fifths as 

 long as body, base four-jointed, flagellum nearly twice as long as 

 base, seven-jointed. 



Plate 53, fig. 6a, animal, enlarged; b, inner antenna; c, outer an- 

 tenna ; d, foot of second pair. 



Feejee Islands. Found in a Creusia, three or four specimens in 

 different individuals of this corallidomous barnacle. 



Length, about half a line. Body broadest near middle of thorax ; 



