A General Ilistorij of the Marine Polyzoa. 175 



erythrinm, as figured by Burmeister, we have a parallel to 

 the case of Acjlia tau. The luUy grown larva is smooth- 

 bodied and without the four long large thoracic spines and 

 tlie caudal liorns on the eighth and ninth abdominal segments 

 of the previous stage. The genus appears to belong to the 

 Ceratocampidie. 



Although we are not yet acquainted with the early larval 

 stages of Endromis, we do not see why the kSphingidae may 

 not have sprung from a form like this as much as from Aglia^ 

 as the shape and markings of tiie iull-grown caterpillar are 

 much nearer a typical Hphinx than those of Aglia. More- 

 over, taxonomically Aglia is by no means so ** closely " 

 allied to the Sphingidai as j\Ir. Poulton in his able papers 

 would lead us to infer. In its venation Endromis is much 

 nearer, and the latter is a more generalized or synthetic form 

 than Aglia. From the Ceratocampidfe the families of Satur- 

 niidaj and also of Hemileucida may have originated, and, 

 indeed, all the Bombyces (unless we except the Arctians and 

 Lithosiidfe) may have evolved before the Sphingidae appeared. 

 Judging by the characters of the head, the antenna?, thorax, 

 and especially the venation, the Sphingid^ are far removed 

 from the Ceratocampidffi, and their origin from the latter 

 family was at least remote, and there must be some lost, 

 extinct, annectant forms which originally connected them. 



XXIV. — Contributions towards a General History of the 

 Marine Polyzoa, 1880-91. — Appendix. By the Rev. 

 Thomas Hincks, B.A., F.R.S. 



[Continued from vol. ix. p. 334.] 



' Annals,' February 1882 (p. 82 sep.). 

 Steganoporella {Vincularia) JSeozelanica, Busk. 



In a note on p. 85 (sep.) the last clause of the first para- 

 graph should read ihus : — " The latter is a Memhranipora, 

 the former belongs to a different family." The Vincularia 

 abyssicola mentioned in this paragrapli is the Smittipora 

 ahyssicola of Jullien, which he ranks in the family group of 

 the Onychocellidse *. 



The passage relating to the ooecium on the same page has 

 been criticized by Dr. Jullien, who challenges the interpre- 

 tation which I have given of the upper chamber in the zooecia 



* Bulletin de la Sw^i6t6 Zool. de France, t. vi. (1881). 



