Genera and Species of Coleoptera. 121 



DocALis [Tenebrionidae]. 



Head roimded, exserted, the antennarv orbit nearly dividing the eye. 

 Antennre short, covered with numerous small Hattish hairs, the first 

 three joints longest, the rest transverse, the tenth larger than the 

 eleventh. Mandibles stout, bifid at the apex. Palpi robust, tenuinal joint 

 of the maxillary short, stout, of the labial obconic, obtuse j external 

 maxillaiy lobo short, triangular, fringed, the inner narrow, toothed. 

 Mentmn arising within the jugidar plate. Prothorax subquadrate, 

 scarcely wider than the head. Eljiira ovate-oblong, broader than the 

 prothorax. Legs short, the intermediate furnished with trochanters ; 

 coxje not contiguous ; tibiae not spm-red ; tarsi with all the joints ex- 

 cept the last very short and fringed vnih. spiny hairs. Prosternal pro- 

 cess quadrate. Mesostemum depressed. 



The Tagenia fanerosa of the Eev. F. W. Hope is, I thiiik, refer- 

 able to this genus ; and, trusting solely to recoUection of his type, 

 now in the Taylor Institute at Oxford, it is very close to, if not 

 identical with, my D. degener ; but without certainty on this point, 

 it is better to assume that they are distinct. The genus seems to 

 be referable to the Scaurinse, and, so far as my knowledge of the 

 group extends at present, it might follow Ammojphoms. The struc- 

 ture of the mouth, in reference to what I have called the " jugular 

 plate," but which appears to be the " sous-menton " of M. Lacordaire, 

 is very similar, jiidging from that author's description, to that of 

 Nyctoporis, which genus immediately precedes Ammophoms. The 

 larger penultimate joint of the antennae is suggestive in a slight 

 degree of the club of many Colydian genera ; indeed, there are so 

 many points of resemblance between several of the Heteromera and 

 the Colydiidse, as to justify a doubt whether they may not be more 

 than mere analogies. 



DocaUs exoUtiis. (PI. VIII. fig. 9.) 



D. oblongo-ovatus, fuscus ; prothorace transverse. 



Huh. Australia (Melbom'ne) ; Tasmania. 



Oblong-ovate, dark brown, everywhere covered, but not very closely, 

 with semi-erect, stiff black scales (hairs), intemiixed, especially ou 

 the head and prothorax, with rusty-white ; prothorax slightly broader 

 than long ; scutellum roimded behind ; elj'tra coarsely seriato-puuctate, 

 marked with several slightly elevated longitudinal lines, which are 

 severally crested with a row of whitish scales ; body beneath pimctm-ed, 

 each pmictiu'e enclosing a short rusty hair. Length 2 to 3 lines. 



For my knowledge of this and the species of the two preceding 

 genera, I am indebted to Robert BakcweU, Esq., who informs me 

 that they, and many other insects as well, are found beneath the 



