414 Proceedings of the 



there issues a tube, which, in making its appearance in the 

 body of the crab, breaks up into an innumerable quantity 

 of copper-coloured tubules, which ramify through the whole 

 body of the unfortunate Bernhardus. I have detected these 

 tubes passing to the base of the antennas, ramifying through 

 the claws, thorax, and abdomen, and giving to the soft and 

 transparent parts of the crab a well-marked greenish hue. The 

 function of these tubes is evidently to supply the body of the 

 parasite with nourishment. Cavolini and Professor 0. Schmidt, 

 from their observations of the development of the embryo in. Pel-* 

 togaster carchxi, were led to consider it as an undoubted crus- 

 tacean. Professor Steenstrup justly remarks, that from Cavo- 

 lini's observations there can be no doubt as to the true crusta- 

 cean nature of the Peltogaster carcini, and that its sack-like 

 form is the result of its parasitic mode of life ; and he observes, 

 that if Peltogaster carcini is a true crustacean,[analogy leads us 

 to regard Peltogaster paguri — the embryo of which has never 

 been observed — in the same light. I was fortunate enough 

 some time ago to meet with a specimen of the P. paguri con- 

 taining eggs. Though I am unable at present to give a de- 

 scription of a fully-developed larva of this species of Peltogas- 

 ter, yet I observed sufficient characters in the various stages 

 of development of the embryo to convince me of its crustacean 

 nature. I can only plead, as an excuse for the very meagre 

 character of this communication, the difficulty I had in getting 

 specimens of this parasite for my observations ; and I hope 

 to be able to lay this subject in a more complete form before 

 the Society at some future meeting. 



(2.) On the Occurrence of the Galathea Andrewsii. 



This little Galathea, which was figured and described by 

 Professor Kinahan in the Proceedings of the Natural History 

 Society of Dublin for 1856-7, I dredged in Shetland in consi- 

 derable numbers last August. It is therefore to be considered 

 as a Scottish species ; and I have no doubt but it will be found 

 in other localities. I subjoin the specific characters, as given 

 by Professor Kinahan: — " G. rostrobrevi, 35 dentibus utrin- 

 gue ornatis. Pedibus anticis rotundatis elongatis angustis 

 sparse tuberculatis tuberculis spinos ssepissime terminantibus. 



