410 REPORT ON ZOOLOGY, MDCCCXLIV. 



List of the specimens of Myriapoda in the collection of the British 

 Museum. Printed by order of the Trustees. London, 1844. In this list 

 94 species of Chilopoda, and 75 of Chilognatha, are enumerated. The col- 

 lection is particularly interesting, as it has afforded the chief materials 

 for Newport's works on the order. 



Newport himself has prepared the list of the Myriapoda of the British 

 Museum in the Annals of Natural History, xiii (Chilopoda, p. 94 ; Chilo- 

 gnatha, p. 263), adding the abridged specific characters of those that are new 

 or that have not been well determined previously. 



Another important work on this order generally is by Paul Gervais, 

 Etudes sur les Myriapodes (Ann. Sc. Nat. ii, 51). The discrepancy between 

 the accounts given by Savi and Newport of the development of Julus, and 

 that by Degeer, the young being hatched destitute of legs according to 

 them, according to Degeer with three pair, induced this author to investigate 

 the matter anew. Glomeris marginatus and Polydesmus complanatus come 

 out of the egg with three pair of legs, and in the first-named species he was 

 able to distinguish them in the embryo before it was hatched. The rest of 

 the essay relates to the classification, containing observations on known 

 genera, and the characters of new ones, viz. : 



CHILOGNATHA. 1. Glomeridesmus, of the fam. Glomeridse, with 20 (21 ?) 

 segments, exclusive of the head, and 32 feet ; the first segment large shield- 

 shaped, while the second is smaller than in Glomeris ; G. porcellus, new 

 species, from Columbia. (See further, Ann. Soc. Eut. Er. ii, p. 27.) 2. Oms- 

 codesmus, one of the Polydesmidae : the form of the body as in Ouiscus, i. e. 

 convex on the back, the side margins of the segments bent downwards and 

 covering the legs, the segments apparently (but not distinctly, as in the Glo- 

 meridse) composed of five pieces : a new species, 0. onisdnus, from Columbia 

 (described as Polydesnms id., Ann. Soc. Eut. Er. ii, p. 28). 3. Stemmiulus, 

 belongs to the Julidse, and is characterized by the single simple eye behind 

 each of the feelers : a small species, St. bioculatus, from Columbia. (See 

 also Ann. Soc. Eut. Er. ii, p. 28.) In the place last referred to, the author 

 has made known some other new species, collected by Goudot in Columbia, 

 Polydesmus velutinus and granosus, and Sipfionophora luteola ; and has 

 noticed (ibid. p. 22) the Cambala lactaria, Gray, a species yet uudescribed. 



Lucas (Rev. Zool. 51) has characterized a new species of Polydesmus, 

 from the district of Bugia, in Algeria, P. mauritanicus. 



Koch (Pz. Fna. pt. 190; Deutsch. Crust. Arachn. Myriap. pt. 40) has 

 figured a number of German species, and of these as new, Glomeris rttfo- 

 ffuttata, Polydesmus macilentus, Julus nemorensis. A distinct genus, Tropi- 

 soma, is formed for Julus pallipes, 01., a species indigenous in Southern 

 Germany. 



Wag a (Rev. Zool. 337) shows that Julus albipes and fasciatus, Koch, 



