404 A HISTORY OF RECENT CRUSTACEA 



curvatus, Kossmanu, is said to have a cylinclrical form, and 

 to be nearly related to the preceding species. 



Ewnetor, Kossmann, 1872. ' The male allied to Lirioiie 

 (Rathke), but without antennae ; the female much larger, 

 its segmentation continuing in the mature state.' (' Zool. 

 Record,' 1873). 



Eametor Urioindes^ Kossmann, 1872, in the mantle- 

 cavity of Sacculina fisifovmis^ from the Philippines. Dr. 

 Fraisse, discussing specimens which he supposes to belong 

 to this genus, from the mantle of Sacmlina Benedenii, says 

 that no brood- cavity is present, the Ipopod being content 

 to use the mantle of the Sacculina for that purpose. He 

 also says that the male of Kossmann's species 'has no 

 olfactory setae on the inner antennae.' 



Criiptothh\ Dana, 1852, on non-parasitic Cirripedes. 



CrijidotJiirminutum^ Dana, in the corallidomous barnacle 

 Creusia^ at the Fiji Islands. 



Cryptothir balani (Bate), 1861, on Balanus halanoides. 

 The larval form, as taken with the tow-net in the Clyde,, 

 has eight teeth on the basal joint of the first antenna ; the 

 second antenii^e nine-jointed ; the mouth-organs forming 

 a triangular mass, ^vith the apex pointing backwards ; the 

 sides of the per^eon, and in a less degree those of the pleon, 

 digitate; the first two pairs of trunk-limbs not degraded, 

 strongly subchelate, the next three pairs slightly so, the 

 last two pairs simple, with the two terminal joints elongate ; 

 the five pairs of pleopods and the uropods two-branched, 

 the branches tipped with set^e. According to Bate and 

 Westwood, the adult sedentary female is a lobate sack- 

 formed mass without any appendages. 



The genus Hemioniscns, Buchholz, 1866, is said to be 

 a synonym of Griiptotliir, Bat according to Buchholz the 

 adult female of his Hemioniscus halani retains the front 

 part of the larval form. This, however, may not be per- 

 manently the case. Beddard mentions a Bopyrid in the 

 larval stage attached to Serolis cornuta, Studer, on the dor- 

 sal surface of some of the anterior segments, and ' apparently 

 belonging to the genus Hemioniscus,' but this parasite has 

 not been described. 



