CRYPTOTHIRIA BALANT. 269 



Mr. Goodsir's figures were more or less perfect repre- 

 sentations of the mass that we had observed. 



The young, which we have frequently taken in an 

 incomplete stage, are developed as in true Isopoda ; and 

 the earliest larval condition, as figured by Goodsir and 

 Rathke, shows that the animal is, both in its develop- 

 ment and parasitic habit, closely allied to the Bopyroid 

 Crustacea. 



The animal represented in the middle of our wood- 

 cut, which we consider to be the male, corresponds, so 

 far as the head and anterior segments of the body are 

 concerned, with that which Mr. Goodsir has figured as 

 being the anterior segments of his supposed male, and, 

 if Mr. Goodsir's dissections be true, appears to offer a 

 very considerable evidence of the near relation of the 

 two animals. But we were inclined to think that 

 Mr. Goodsir's figures, 1 3 in pi. 3, which he gives as 

 the concealed cephalic portion of what he calls the male 

 of the Balanus, and the entire dorsal view of the same 

 animal given in pi. 4, fig. 10, were taken, the former from 

 the real male, and the latter from the female, Liriope.* 



Though frequently having taken the females in con- 

 nection with the Balanus, and these also charged with 

 ova in various stages, we have never taken the male asso- 

 ciated with the female, as is almost invariably the case 

 with the other genera of the Bopyridce. In this species 



* In tlie elaborate memoir of Dr. Buclikolz above referred to, published 

 last September, the learned author has arrived at an opposite conclusion rela- 

 tive to the true condition of our supposed male, which he has carefully figured 

 and described as the larva-form of the species, and which, in certain indi- 

 viduals at least, becomes developed into the female, the fully developed con- 

 dition of the male being still unknown. This observation completely supports 

 the correctness of Goodsir's statement, that his figures 1-3 represent the 

 anterior articulated part of the animal of which a dorsal view is given in his 

 figure 10, in which, however, the articulated portion is concealed by the 

 swollen front of the second division of the body. 



