36 Mr. David Sharp on the 



broad as tlie thorax, quadrate, very truncate behind ; with 

 some coarse punctures along the inner margin of the eye, 

 with two punctures placed transversely in a line with the 

 front margin of the eyes, with two other such punctures 

 behind these, and with numerous punctures at the hind 

 angles; the hind margin distinctly notched in front of the 

 neck. Thorax a little narrower than the elytra, quadrate, 

 scarcely if at all longer than broad, quite truncate in front, 

 the anterior angles well marked ; it is but little narrowed 

 behind, and has on each side of the middle a row of discoidal 

 punctures, simulating those of Pliilontlius, varying in 

 their number from two to six on each side; except for this 

 the disc is impunctate. The elytra are but little longer 

 than the thorax, densely and finely punctured, red, dull; 

 scutellum large, black, densely punctured. Hind body 

 closely and finely punctured, the 7th segment more sparingly 

 punctured on the upper side. The metasternum is reddish, 

 and this colour sometimes extends to the under surface of 

 the hind body. The basal joint of the hind tarsus is 

 longer than the tliree following joints together. 



Abundant under seaweed at Amakusa and Iwosima. 



Q>Q. Pltilontlms ( Cojius, Thomson) nudus, n. sp. Niger, 

 nitidus, parcius punctatus, thorace serie dorsali quadri- 

 punctato, punctis magnis ]Drofunde impressis ; elytris for- 

 titer profunde punctatis. Long. 4 — 5 lin. 



Var. Elytris rufis. 



Though this species has much the form of P. xantho- 

 loma, it appears at first sight very different from that insect 

 because of its sparingly punctured and shining elytra. 

 Antenna rather short, scarcely thickened towards the 

 extremity, black, joints 7 — 10 a little transverse. Head 

 (variable in size) shining black, with some very large 

 punctures, placed five in an irregular row between the 

 eyes, five in a curved row behind these, and one or two 

 others near the hind angles. Thorax black and very 

 shining, quite as long as broad, nearly straight at the 

 sides ; on each side the middle Avitli a row of four very 

 large punctures, and with four or five other large punc- 

 tures between these and the fi-ont angles. Scutellum 

 punctured. Elytra longer than the thorax, coarsely and 

 deeply punctured, almost destitute of pubescence, but 

 furnished at the extremity with fine long cilia. Hind 

 body moderately closely punctured, and finely and spar- 

 ingly pubescent, distinctly shining. The legs are pitchy. 



