26 OTIOKHYXCHID^. 



[Horn. 



cription given by Motsclmlsky is so extremely vague and short as to be 

 entirely valueless, and in strict justice the genus should be credited to 

 Lacordaire. 



T. pilosa Motsch. Etudes Entom. I, 1852, p. 79 ; Lacord. Genera, 

 Atlas pT'bl, iffg. 5, a-b. 



Form oval, robust, surface densely covered with cinereous scales and 

 moderately long greyish hairs sparsely placed, elytra irregularly varie- 

 gated with fuscous. Head and rostrum as long the thorax, densely scaly 

 and sparsely pilose. Antennae rufous, hairy. Thorax broader than long, 

 narrower in front, sides strongly arcuate, disc convex, surface moderately 

 densely scaly. Elytra rather broadly oval, humeri broadly rounded, sides 

 feebly arcuate and slightly acuminate posteriorly, disc convex, with rows 

 of moderately fine punctures, surface densely scaly and sparsely pilose. 

 Body beneath moderately densely scaly and with rather longer hairs than the 

 upper surface, last three segments of abdomen distinctly pubescent. Legs 

 more sparsely scaly and with rather long greyish hairs. Length .22 .36 

 inch ; 5.5 9 mm. 



The males have the metasternum and abdomen broadly concave. The 

 scales covering the elytra and, in fact, the entire upper surface are very 

 variable in coloration. The ground color is a cinereous usually very irregu- 

 larly mottled with fuscous. Occasionally specimens occur in which the 

 elytra are pale ochreous with an irregular band on the middle of each ely 

 tron becoming gradually broader behind, nearly uniting at the suture. 



This species is not rare on the sea-coast at San Francisco, Cal. 



Group VI. Calyptilli. 



Rostrum not longer than the head, sub -quadrangular, very slightly nar- 

 rowed toward the tip and but little narrower than the head. Eyes round, 

 coarsely granulated and almost entirely concealed from above by a small 

 tubercle. Scrobes lateral, arcuate, deep. Thorax without ocular lobes or 

 fimbriae. Scutellum very indistinct. Mesosternal side pieces very un- 

 equal. Metasternum short, side pieces moderate, suture obliterated. Ab- 

 domen normal, intercoxal process broad truncate in front. Tarsi with 

 coarse spinous hairs beneath, third joint not wider than the second and 

 feebly emarginate, last joint moderately long, claws free. Anterior tibiae 

 feebly mucronate and digitate at tip with four or five coarse spinules, articu- 

 lar cavities of hind tibiae cavernous. 



The gular emargination is moderately large and without sub-mental 

 peduncle. The mentum is nearly semicircular in shape and partially ex- 

 poses the other oral organs, the maxilla being slightly visible at the sides 

 and the ligula at tip. 



The combination of characters above given will be found very difficult 

 to place in any tribe of Lacordaire 's system. The genus can not be called 

 Phanerognath, as the mentum conceals the greater portion of the oral or- 

 gans, and I am equally at a loss for a position in the AdelognatU series. 



The occurrence of narrow tarsi in this portion of the series is certainly 



