1865.] Zoology and Animal Physiology, &c. 703 



cornea. According to M. Clans the position of the four pairs of 

 abdominal eyes is very remarkable : the first pair looks forward, the 

 last pair backwards, and the two intermediate pairs downwards. 



Dr. Mcintosh describes the internal parasites of Carcinas Moenas, 

 or the common shore-crab, consisting of a trematode larva and Ascaris. 

 He found adhering to the sheaths of the nerves from the great 

 thoracic ganglion, minute specks in groups of two and three. The 

 same bodies were found in the liver, and proved to be small glassy 

 ova with opaque white internal markings. They were found in every 

 specimen examined, and in well marked cases they occurred in 

 hundreds, crowded together like clusters of grapes. The egg case 

 was very tough and contained a living embryo which has a gentle 

 gliding movement in the egg. It lies in a double or coiled position, 

 and after extension crawls about with an undulating motion like a 

 Planaria. At the upper end is a circular oval sucker, from which an 

 oesophagus proceeds downwards dilating into an ovoid sac, and again 

 contracting, passes down the middle of the body, and finally divides 

 into two wide alimentary caeca, forking outward to the sides of the 

 body. These ova, which occur in nearly every soft texture in the 

 interior, except perhaps the heart, appeared to be nearly of the same 

 age in every specimen ; in all probability they attain little more 

 development in the body of the crab, but await the ingestion and 

 digestion of the Crustacea by such fishes as the Cotti, Gadi, and 

 others, in whose stomachs they become complete Distomas. In two 

 cases also an Ascaris was found amongst masses of liver removed 

 from a Carcinus, and possibly swallowed with fragments of a fish. 



Mr. Gosse describes in the ' Annals of Natural History ' a new 

 genus of Sea Anemones, which he says might well put in a claim to 

 be considered Pulcherrima, if we had but a Paris to judge. The 

 animal, which he has named iEgeon Alfordi, was discovered by the 

 Eev. D. P. Alford, Chaplain of the Scilly Isles, in March last, under 

 a large stone, from under which the tentacles were protruding like 

 those of an Anthea. But on removing the stone he found an Anemone 

 with high standing column, like an Aiptasia, but with the surface 

 warted, and with tentacles like the richest green velvet, throwing into 

 the shade the brightest of Antheas. This species Mr. Gosse finds to 

 possess very obvious affinities to both Aiptasia and Anthea, but the 

 character of the column distinguishes it well from either, and he has 

 constituted for it the new genus, iEgeon. After very many protracted 

 watchings with a powerful lens, when the body was in the most 

 favourable condition for observation, he could never discern the slightest 

 trace of cinclides ; nor has any amount of provocation produced the 

 emission of acontia. At present this is a unique specimen, but it is 

 hoped others may be found. The Scilly Islands appear to abound 

 with Aiptasiae — other species and varieties are well represented — but 

 among the rocks of Port Crassa Bay the Aiptasise are far more common 

 than the Actinia mesembryanthemum. 



Professor Bell communicates to the ' Zoologist ' an account of a 

 very severe injury done by a Physalis, or Portuguese Man-of-war, at 



