120 Bibliographical Notices. 



licult to obtain ; because the monkeys live here, which are under 

 the special protection of the English, who have set a great fine upon 

 any one who should take or kill one of these animals. Scilla hemi- 

 sphcerica occurs also on boulders, but less beautiful and rarer than 

 on the original walls. On shady boulders and in rocky clefts, as 

 well as along the narrow comb of the summit, Cerastium gibraltari- 

 cum, Boiss., is very frequent. Also, on the rocky walls of the eastern 

 acclivity, grow Reseda alba, L., Antirrhinum majus, L., and especially 

 on the north-eastern rocks, Saxifraga glohulifera, Desf., /3. gibral- 

 tarica, Boiss., which is only now beginning to shoot forth its buds. 

 Upon boulders blossom Veronica cimbrolaria, Badara, very rare Se- 

 necio minutus, DC, in fine large specimens, Erodium moschatum, L., 

 and under bushes ^theorrhiza bulbosa, Cass., and Smilax mauritanica, 

 Desf. The rock-walls of the eastern acclivity descend toward the 

 Punta de Europa straight down into the sea, whilst those of the 

 northern valley descend to only half the height of the mountain, 

 and here join on to a steep slope consisting of boulders and drift- 

 sand, which extends down to the shore. On these slopes grow 

 Ononis gibraltarica, Boiss., in great profusion, which unfortunately 

 was not yet in blossom, besides Silene gibraltarica, Boiss., in the same 

 state, and several other species of this genus : also in the drift-sand 

 Erodium laciniata, Cav., Uropetalum serotinum, Ker., a small form of 

 Picridium tingitanum, Desf., Linaria pedunculata, Spr., and the pretty 

 L. amethystea, Lk. HofFm., var. albiflora, Boiss., with white flowers, 

 yellow palate, and violet- spotted lower lip. 



' On the isthmus of Gibraltar, a naked sandy plain full of nume- 

 rous salt lakes, which separates the limestone rocks of Gibraltar 

 from the sandstone hills of S. Pvoque, are found few plants, but some 

 rare species. On the downs grows Schoenus mucronatus, L., in great 

 abundance, more rare a Carduus, and among bushes of Tamarix gal- 

 lica several Silenes, Erodium Botrys, Bertol., Astrocarpus sesamoides, 

 DC, and Passerina villosa (?), Wikstr., occur frequently. In addi- 

 tion is found the pretty Ononis variegata, Desf., in the drift-sand of 

 the isthmus, in pretty considerable abundance. !o,oa tjJ«> 



BIBLIOGRAPHICAL NOTICES. "^ 



Recherches sur V Anatomic, la Physiologic et V Embryogenie des Bryo-' 

 zoaires ; par M. Van Beneden, Professeur a I'Universite Catholique 

 de Louvain. (Extrait du tom. xviii. des Memoires de T Academic 

 Roy ale de Bruxelles.) 



In these " Recherches," Van Beneden continues the admirable series 

 of Memoires in which he proposes to illustrate the structure of the 

 invertebrate animals found on the coast of Belgium. The first me- 

 moir in the present brochure is devoted to the genus Laguncula, 

 as Van Beneden calls the Lagenella of Farre, forgetting that Ehren- 

 berg had long ago given the name Farrella to this zoophyte. And 

 we would here remark that, while he carelessly sets aside the rules 

 of scientific nomenclature. Van Beneden has a happy tact in confer- 



