that the type of Guilding's Herpa from the West Indies is not to be 

 found. It was also described as a mollusc, but it has Planarian 

 characters. 



Haplo discus.— L. von Graaf 1 gives his opinion of Weldon's Hap- 

 lodiscus piger from the Bahamas, which was thought by its describer 

 to be possibly allied to the Cestodes or Trematodes. It is, says von 

 Graaf, an acoelous Turbellarian, with zooanthellse, with ceutral mouth, 

 two genital openings and apparently with a chitinous terminal portion 

 to the bursa. These characters would assign it to the genus Convoluta. 



Echinorhynchi in America.— It has long been known that the 

 swine in this country are commonly affected with these parasites. Dr. 

 C. W. Stiles has recently solved the problem of the intermediate host 

 of the worm (Zool. Anz. xv, p. 52, 1892). In Europe it had been 

 demonstrated that two or three of the Scarabaeid beetles acted as such 

 host and so they were used as the basis of experiment here. Eggs of 

 Echinorhynchus were sprinkled on the food (tender roots, etc.) of the 

 larvae of Lachnosterna and subsequent investigation showed that the 

 larvae were distended with the young. As farmers are in the habit 

 of turning their hogs into fields which are infested with the 'white 

 grubs ' — larvae of the June bugs — it is easy to see how the parasites 

 can be communicated to the swine, provided, of course, that the grubs 

 be affected. On the other hand the grubs may be readily infected 

 from the faeces of a single infested hog. 



The Species of Panopaeus.— James E. Benedict and Mary & 

 Rathbun monograph 2 the species of this essentially American genus of 

 Cancroid Crustaceans. Eurytium and Eurypanopeus are included as 

 synonyms. Twenty-four species have been examined and as a supple- 

 ment a list of fifteen more nominal species is given of which no speci- 

 mens have been seen. Some three thousand specimens were examined 

 in the preparation of the paper. The present writer once studied this 

 genus but did not publish his results. He is of the opinion that the 

 number of species here admitted is about three times too large, for the 

 species are very variable.— K. 



Pycnogonid Studies.— Schimkewitsch 3 revises the species of the 

 genera Phoxichilus and Tanystylum. In the introduction Wilson's 

 'Zool. Anz. xv., p. 6, 1892. 



