Radiata. 7857 



bury themselves in the ground for the purpose of passing the pupa 

 state. The cocoon was pale yellow. The first imago appeared, with 

 me, on the 5th of the following July, the rest following shortly after- 

 wards. In the works on Hymenoptera to which I had access I was 

 unable to find any description applicable to my insect ; I .was thus 

 obliged to describe it as a new species, and the singular method of 

 defence adopted by the larva readily supplied me with a specific 

 name. This species is most nearly allied to Nematus crassicornis, 

 Hart., described by Hartig, at page 204, of his Blatt und Holzwes- 

 pen, which insect also has broad, or, rather, deep antennae, similar to 

 those of N. vallator. The ground colour of this last is black, shining; 

 head and thorax punctate, and thickly clothed with short brown hairs. 

 The antennae are vertically incrassated from the third joint, more 

 especially in the male, and the terminations of the joints on the un- 

 der side project like the teeth of a saw, as shown, although not suffi- 

 ciently marked, at fig. 5. The antennae are black ; in those of the 

 male insect a red tinge is observable on the outside. The compound 

 eyes are rather large, spherical, black. Tegulse white or reddish 

 white. Legs yellowish red ; femora darker ; tarsi paler; the posterior 

 legs have the tibiae red for one-eighth of their length, counting from 

 the base, — then half while and the remainder black; the posterior 

 tarsi are pale gray. My images were somewhat longer than 3 lines 

 (7 mm.), expanding to 6 lines (14 mm.) 



The saw of the female is represented at fig. 6. 



I have not as yet been able to learn anything respecting the eggs 

 or manner of ovipositing. I have also failed in rearing any parasites 

 from this species. 



ji^ote. — Since the above was written in the original, I have received a letter from 

 the author, in which he says, " This larva has since been found on other poplars in 

 Leyden, and also at Utrecht; with me it has appeared annnally in consideratde num- 

 bers." He also informs me that the eg<js of Nematus vallator are found inserted into 

 the under side of the midrib of a leaf, two, three and four together ; and that on the 

 20th of July, 1861, he found some larva just hatched, and at the same time he 

 observed the marks left by the eggs. — J. W. M. 



Notes on the Sea Anemones of the Mersey and Z)f?e.— [Addressed by Dr. Cuthbert 

 Collingwood to P. H. Gosse, Esq., and communicated by the latter.] 



Plumose Anemone (Aclinoloba Dianthus). The locality chosen by your corre- 

 spondent is a strange one, "Liverpool, under the pontoons of the landing-stage." It 

 is possible it may have been found there, but no one would think of going there to 

 look for it; but higher up the river, on the Dingle Rocks, ibey occur in abundance, — 



XX. F 



