A Qeneral History of the Marine Polyzoa. 175 



erythrince, as figured by Burraeister, we have a parallel to 

 the case of Aglia tau. The fullj grown larva is smooth- 

 bodied and without the four long large thoracic spines and 

 the caudal horns on the eighth and ninth abdominal segments 

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

 Ceratocampidre. 



Although we are not yet acquainted with the early larval 

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

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

 as the shape and markings of the full-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 Sphingidaj as Mr. 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 Ceratocampidge the families of Satur- 

 niida3 and also of Hemileucidee may have originated, and, 

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

 Lithosiidte) may have evolved before the Sphingidae appeared. 

 Judging by the characters of the head, the antennae, thorax, 

 and especially the venation, the Sphingidse are far removed 

 from the Ceratocampidge, 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) Neozelanica, Busk. 



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

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

 the former belongs to a difi"erent family." The Vincularia 

 ahyssicola mentioned in this paragraph is the Smittipora 

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

 the Onychocellidee *. 



The passage relating to the ooeclum 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 zocecia 



* Bulletin de la Soci6t6 Zool. de France, t. vi. (1881). 



