246 Mr. T. V. WoUaston on certain Coleoptera 



a second series is formed in the neighbourhood of the aperturey 

 and the former series begins to be re-absorbed. Thus, during 

 the growth of the animal, a considerable number of barriers are 

 formed ; but in the adult shell, only that last secreted remains, 

 and this is placed, as before mentioned, in H. retifera, at a 

 distance of half the circumference from the mouth, or in such a 

 position that another would be formed close to the aperture if 

 the shell had not attained its full growth. 



H. Guerini, Pfr., H. tabida, Pfr., and H. crinigera, Bens., 

 although closely related in external appearance to H. retifera, 

 show no internal plication. 



XXVIII. — On certain Coleoptera from the Island of St. Vincent. 

 By T. Vernon Wollaston, M.A., F.L.S. 

 [Concluded from p. 206.] 

 Fam. Trachyscelidse. 

 Genus Phaleria. 

 Latreille, Hist. Nat. des Crust, et Ins. iii. 162 (1802). 

 27. Phaleria Clarkii, Woll. 

 Phaleria Clarkii, Woll., Ann. of Nat. Hist. ser. 2. xx. 505 (1857). 

 The present beautiful Phaleria is most variable as regards the 

 development of its darker portions, its large semicircular post- 

 medial patch being sometimes so immensely inci-eased in size as 

 to be diffused over almost the whole elytra, under which circum- 

 stances the prothorax and head are more or less darker also. 

 Despite, however, this great instability in colour, the P. Clarkii is 

 remarkably constant in its other characters, which do not percep- 

 tibly vary. It is closely related to a species which I have cap- 

 tured in profusion on the sandy shores of Fuerteventura and 

 Lanzarote*, but is considerably more depressed and less shining 



* The following comparative diagnosis will point out the distinctions of 

 this Canarian Phaleria from its representative at the Cape de Verdes : — 



Phaleria picta, n. sp. 



P. ovata, convexa, nitida, pallido-ferruginea ; capite minute punctulato, 

 rarius infuscato; prothorace minutissime punctulato, antice ad latera 

 leviter rotundato, postice subrecto, angulis posticis fere rectis, basi utrin- 

 que foveola brevissima punctiformi impresso, vel immaculato vel in disco 

 plus minus infuscato ; coleopteris laete testaceis, macula communi (pos- 

 tice acuminata, antice in elytris singulis dentata) plus minus magna suf- 

 fusa nigro-ornatis, sat profunda punctato-striatis, limbo longe setoso; 

 antennarum articulis subapicalibus K.vt compressis transversis. 



Long. corp. lin. 2|-2J. 



Habitat per oras maritimas arenosas insularum Lanzarotse etFuerteventurse, 

 sub putridis et confervis hinc inde vulgaris. 



