1 
Arcem 
COE icr NAM Dor Oo ME E ETE ik وي‎ 
230 MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARLE. 
Family NITIDULARI.E. 
Antenne recte, clavate. Cox anticz cylindricz, recepte. Acetabula transversalia. Abdomen segmentis 
ventralibus quinque, omnibus liberis. Tarsi articulis quinque, quarto minimo. 
Mentum transverse, subquadrate, composed of two pieces closely united together, fre- 
quently rounded, sometimes sinuate or emarginate in front. Maxille usually exposed, 
rarely covered at the base; with only one lobe, except in the first Tribe, where there is 
an outer lobe. Antennze inserted under the margin of the front, eleven-jointed, termi- 
nated by a round or oval club composed of three or, rarely, of two articles. Thorax 
sometimes closely applied to the elytra, sometimes enclosing their base. Prosternum 
frequently produced behind; parapleura not distinct; coxal cavities transverse. Meso- 
thorax with the parapleura large, extending to the coxz.  Metathorax short, para- 
pleura narrow. Elytra sometimes truncate, sometimes entire. Abdomen with five free 
ventral segments, the first a little longer. Anterior coxz transverse, separated, not 
prominent; middle and posterior ones transverse, flat, the latter extending almost to the 
margin of the body. Legs short, somewhat stout, retractile or subretractile; tarsi short, 
usually dilated, hairy beneath, five-jointed, with the fourth article very small. 
Five tribes compose this family, and the species belonging to each may be recognized 
by the following dichotomous table :— 
Labrum not concealed by the prolonged epistome . . . . . . . 2 
XU concealed by the prolonged epistome. . Se ee » RETIA 
i De or three dorsal segments of the abdomen REGE Dow ا‎ 
The last dorsal segment (pygidium) alone exposed . . . . . . . 3 
à pw. with two lobes estena dw LET we vl. Ue. 4d L2 c MN DOCE OU 
Maxille with one lobe . . . sos ODE I: DMMNPOPÉIMADUP. 
5 unen not much shorter m" ion و‎ cS e وري‎ a e c a Rall 
Prothorax much shorter below than above . . . . . e . . . STRONGYLINJE. 
Tribe I. BRACHYPTERID.JA. 
Genus Cateretes, Erichs. in Germ. Zeitschr. iv. 227 (1843). 
Maxille malis binis. Labrum distinctum. Antenne clava haud magna vel abrupta. Sine sulcis anten- 
naris. Acetabula antica transversa, aperta. Abdomen segmentis duobus vel tribus ultimis liberis. 
Coxe posticz valde distantes. 
The exposed labrum, the epistome not produced, the two-lobed maxilla, the absence of 
antennal grooves, the open transverse anterior cotyloid cavities, and the exposure of more 
than the last segment of the abdomen, all readily distinguish this tribe. 
The absence of antennal grooves is a character by which to distinguish them from the 
greater number of the Carpophilide, although not from all, the genus Mystrops proving 
an exception to the general rule in the Carpophilide. There are no metathoracie axillary 
pieces. The club of the antennz is gradually thickened, not suddenly increased into a 
cireular club. 
