Miscellaneous. 268 



Moreover the oesophagus is not formed as an invagination from 

 the anterior extremity of the intestinal fold, but as a pad-like 

 epithelial growth along the lower border of the dorsal fold in the 

 branchial space, which, being afterwards constricted off at its base 

 by the surrounding connective tissue, becomes a solid cellular cord 

 running in the depths of the fold. The starting-point of the whole 

 new formation is certainly the spot at the end of the branchial 

 space where the entrance to the stomach is closed by the thickening 

 of the lips surrounding it.^Zool. Anzeiger, January 13, 1890, p. 11. 



The Amphipoda of the Boulonnais. — I. Unciola crenatipalmata, 

 Spence Bute. By M. Jules Bonnier. 



In this paper, which is illustrated by two plates, the author gives 

 a detailed description of the Amphipod Crustacean first described 

 by Gosse as identical with the Unciola irrorata of Say, and after- 

 wards recognized as distinct by Spence Bate and described by him 

 under the name of Dryope crenatipalmata. The author discusses at 

 some length the characters presented by the species, and gives the 

 following series of tables to serve for its identification : — - 



I. Amphipoda. 



f Maxilliped rudimentary HYPERINA. 



r - • <• f Sixth pleopod with 



I bi x pairs ot ! s ' -,., ~ . ,,-, . _,.,, 



Dleonods \ ■ anendopodite.... GAMMARINA. 



v A I Maxilliped I Sixth pleopod with 



well deve-<{ no eudopodite. . . . COROPHJNA. 

 v loped. I Fifth and sixth pleo- 

 pods without endo- 

 l podites CERAPINA. 



Pleon well de- J 

 veloped. 



i Five pairs of pleopods DULICHINA. 



Pleon rudimentary . LzEMODlPODA. 



II. Corophina. 

 Mandibular palpus wanting Orciiestiidve. 



f Joints 2 and 3 of the 

 ( Coxopodites of the I maxilliped narrow. Stf.xothoidte. 

 pereiopods broadly -j Joints 2 and 3 of the 

 developed. maxilliped lamel- 

 la lar Microprotopidje. 



Mandibular palpus of J 

 two or three joints. A 



I Coxopodites of the pereiopods narrow and 



{ not well developed Corophiidve. 



